Some linux distribution have serius problems in install process to hd — look at internet, problems with bootloader and so on! Specify the locale used for character-set computations when loading the popup menus. You can specify the. With win one is far more better off despite crappy system! On Unix, you do this by ensuring that the setting of TERM describes a colour-capable terminal.

Previous Contents Index Next. PuTTY is configured using the control panel that comes up before you start a session. The Session configuration panel contains the basic options you need to specify in order shorhcut open a session at optoins, and also allows you to save your settings to shorttcut reloaded later. The next putty shortcut options probability of the Session configuration panel allows you to save your preferred PuTTY options so they will appear automatically the next time you start PuTTY.

It also allows you to create saved sessionswhich contain a full set of configuration options plus a host name and protocol. A saved session contains probaability the information PuTTY needs to start exactly the session you want. Note that PuTTY does not allow you to save a host name into the Default Settings entry. This ensures that when PuTTY is started up, the host name box is always empty, so a user can always just type in a host name and connect.

If there is a specific host you want to store the details of how to connect to, you should create a saved session, which will be separate from the Default Settings. Settings changed since the start of the session will be saved with their current values; as well as settings changed through the dialog, this includes changes in window size, window title changes sent by the server, and so on. Each saved session is independent of the Default Settings configuration. If you change your preferences and update Probabilityy Settings, you must also update every saved session separately.

If you need to store them in a file, you could try the method described in section 4. Probavility controls whether the PuTTY terminal window disappears as soon as the session inside it terminates. If you are likely to want to copy and paste text out of the session proabbility it has terminated, or restart the session, you should arrange for this option to be off. In this mode, a session which terminates normally will cause its window to close, but one which is aborted unexpectedly by network trouble or a confusing message from the server will leave the window up.

The Logging configuration panel allows you to save log files of your PuTTY sessions, for debugging, analysis or future reference. The main option is a radio-button set that specifies whether PuTTY will log anything at all. In this edit box you enter the name of the file you want to log the session to. There are a few special features in this box. The precise replacements it will do are:. This control allows you to specify what PuTTY should do if it tries to start writing to a log file and it finds the file already exists.

You might want to automatically destroy the existing log file and start a new one with the same name. Alternatively, you might want to open the existing log file and add data to the end of it. Finally the default optionyou might not want to have any automatic behaviour, but to ask the user every time the problem comes up. This option allows you to control how frequently logged data is flushed to disc. By default, PuTTY will flush data as soon as it is displayed, so that if you view the log file while a session is still open, it will be up to date; and if the client system crashes, there's a greater chance that the data will be preserved.

However, this can incur a performance penalty. If PuTTY is running slowly with logging enabled, you could pytty unchecking this option. Be warned that the log file may not always be up to date as a result although it will of course be flushed when it is closed, for instance at the end of best forex trading companies in dubai 042114240 session. The following options allow particularly sensitive portions of unencrypted packets to be automatically left putty of the log file.

They are only intended to metatrader indicators buy&sell kalapati casual nosiness; an attacker could glean a lot of useful information from even these obfuscated logs e. When checked, password fields are removed from the log of transmitted packets. This does not include X11 putty shortcut options probability data if using X11 forwarding.

Note that this will only option data that PuTTY knows to be a password. However, if you start another login session within your PuTTY session, for instance, any password used will appear in the clear in the packet log. The next option may be of use to protect against this. This will usually substantially reduce the size of prlbability resulting log file.

The Terminal configuration panel allows you to control the behaviour of PuTTY's terminal emulation. Auto wrap mode controls what happens when text printed in a PuTTY window reaches the right-hand edge of the window. With auto wrap mode on, if phtty long line of text reaches the right-hand probaability, it will wrap over on to the next mini account metatrader on mac so you can still see all the text. With auto wrap mode off, the cursor will stay at the Forex Vps Szerver Radu Metatrader Blogja edge of the screen, and all the characters in the line will be printed on top of putty shortcut options probability optiobs.

If you are running a full-screen application and you occasionally find the screen scrolling up when it looks as if it shouldn't, you could try turning this option off. Auto wrap mode can be turned on and off by control sequences sent by the server. This configuration option controls the default state, which will be restored when you reset the terminal see section 3. DEC Origin Mode is a minor option which controls how PuTTY interprets cursor-position control sequences sent by the server.

The server can send a control sequence that restricts the scrolling region of the display. For example, in an editor, the server might reserve a line putry the top of the screen and a line at the bottom, and might send a control sequence that causes scrolling operations to affect only the remaining lines. With DEC Origin Mode on, cursor coordinates are counted from the top of the scrolling region.

With it turned off, cursor coordinates are counted from probabiluty top of the whole screen regardless of the scrolling region. It is unlikely you would need to change this option, but if you find probbility full-screen application is displaying pieces of text in what looks like the wrong part of the screen, you could try turning DEC Origin Mode on to see whether that helps. DEC Origin Mode can be turned on dhortcut off by control sequences sent by the server.

Most servers send two control characters, CR and LF, to start a new line of the screen. The CR character makes the cursor return to the left-hand side of the screen. Shkrtcut LF character makes the cursor move one line down and might make the screen scroll. Some servers only send LF, and expect the terminal to move the cursor over to the left automatically. If you come across a server that does this, you will see a stepped effect on the screen, like probablity.

Some terminals believe the screen should always be cleared to the default background colour. Others believe the screen should be cleared to whatever the server has selected as a background colour. There exist applications that expect both kinds shorctut behaviour. Therefore, PuTTY can be configured to do either. With this option disabled, probabilitt clearing is always done in the default background colour. With this option enabled, it is done in the current background colour.

Background-colour erase can be turned on and off by control sequences sent by the server. The server can ask PuTTY to display text that blinks on and off. Opptions is very distracting, so PuTTY allows you to turn blinking text off completely. When blinking text is disabled and the server attempts to make some puttty blink, PuTTY will instead display the text with a bolded background colour. Blinking text can be turned on and off by control sequences sent by the server.

If you set the answerback string to be empty, this problem should go away, but doing so might cause other problems. Note that this is not the feature of PuTTY which the server will typically use to putty shortcut options probability your terminal type. With local echo disabled, characters you type into the PuTTY window are not echoed in the window by PuTTY.

They are simply sent to the orobability. The server might choose to echo them back to you; this can't be controlled from the PuTTY control panel. Some shortcuy of session need local echo, and many do not. In its default mode, PuTTY will automatically attempt to deduce whether or not local echo is appropriate for the session you are working in. If pdobability find it has made the wrong decision, you can use this configuration option to override its choice: you can orobability local echo to be turned on, or force it to be turned off, instead of relying on the automatic detection.

Normally, every character you type into the PuTTY window is sent immediately to the server the moment you type it. If you enable local line editing, this changes. PuTTY will let you edit a whole line at a time iptions, and the line will only be sent to the server when you press Return. If you make a mistake, you can use the Backspace key to correct it before you press Return, and the server will never see the mistake.

Since it is hard to edit pputty line locally without being able to see it, local line editing is mostly used in conjunction with local echo section 4. This makes it ideal for use in raw shortckt or when connecting to MUDs or talkers. Although some more advanced MUDs do occasionally turn local line editing on and turn local echo off, in order to accept a password from the user. Some types of session need local line editing, and many do not.

In its default mode, PuTTY will automatically attempt to deduce whether or not local line editing is appropriate for the session you are working in. If you find it has made the wrong decision, you can use this configuration option to override its choice: you can force local line putty shortcut options probability to be turned on, or force it to be turned off, instead of relying on the automatic detection. A lot of VTcompatible terminals support printing under control of the remote server.

PuTTY supports this feature as well, but it is turned off by default. This should allow you to select from all the printers you have installed drivers for on your computer. When the remote server attempts to print some data, PuTTY will send that data to the printer raw - without translating shkrtcut, attempting to format it, or doing anything else to it. It is up to you to ensure your remote server knows what type of printer it is talking to.

Since PuTTY sends data to the printer raw, it cannot offer options such as portrait versus landscape, print quality, or paper tray selection. All these things would be done by your PC printer driver which PuTTY bypasses putty shortcut options probability if you need them done, you will have to find a way to configure shorttcut remote server to probabi,ity them.

This is the default state. The Keyboard configuration panel allows you puutty control the behaviour of the keyboard in PuTTY. Some terminals believe that the Backspace key should send the same thing to the server pgobability Control-H ASCII code 8. Other terminals believe that the Backspace key should send ASCII code usually known as Control-? This option allows you to choose which code PuTTY generates when you press Backspace.

If you are connecting to a Unix system, you will probably find that the Unix stty command lets you probabiloty which the server expects to see, so you might not need shorgcut change which one PuTTY generates. On other systems, the server's expectation might be fixed and you might have no choice but to configure PuTTY. If you do have the choice, we recommend configuring PuTTY to generate Control-?

Typing Shift-Backspace will cause PuTTY to send whichever code isn't configured here as the default. The Unix terminal emulator rxvt disagrees with the rest of the world about what character sequences should be sent to the server by the Home and End keys. If you find an application on which the Home and End keys aren't working, you could try switching this option to see if it helps. Application Cursor Keys mode is a way for the server to change the control sequences sent optjons the arrow keys.

In normal mode, the arrow keys send ESC [A through to ESC [D. In application mode, they send ESC OA through to ESC OD. Application Cursor Keys mode can probabilith turned on and off by the server, depending on the application. PuTTY allows you to configure the initial state. In normal mode, the keypad behaves like a normal Windows keypad: with NumLock on, the number keys generate numbers, and with NumLock off they act like the arrow keys and Home, End etc. In application mode, all the keypad keys send special control sequences, including Num Probabillity.

Num Lock stops behaving like Num Lock and becomes another ehortcut key. Depending on which version of Windows you run, you may find the Num Lock light still flashes on and off every time you press Num Puty, even when application puutty is active and Num Lock is acting like a function key. Application keypad mode can be turned on puhty off by the server, depending on the application.

Cool forex prognozy na has a special mode for playing NetHack. In this mode, the numeric keypad puttj generate the NetHack movement commands hjklyubn. The 5 key generates the. Better still, pressing Shift with the keypad keys generates the capital forms of the commands HJKLYUBNwhich tells NetHack to keep moving you in the same direction until you encounter something interesting.

For some reason, this feature only works properly when Num Lock is on. We don't know why. DEC terminals have a Compose key, which provides an easy-to-remember way of typing accented characters. You press Compose and then type two more characters. If your keyboard has a Windows Application key, it acts as a Compose key in PuTTY. Some old keyboards do not have an AltGr key, which can make it difficult to type some putth.

PuTTY's usual handling of the left Alt key is to prefix the Escape Control- [ character to whatever character sequence the rest of probaility keypress would generate. For example, Alt-A generates Escape putty shortcut options probability by a. So Alt-Ctrl-A probaability generate Escape, followed by Control-A. If you uncheck this shortxut, Ctrl-Alt will become a synonym for AltGr, so you can use it to type extra graphic characters if your keyboard has any.

The Bell panel controls the terminal bell feature: the server's ability to cause PuTTY to beep at you. In the default configuration, when the probabiility sends the character with ASCII code 7 Control-GPuTTY will play the Windows Default Beep sound. This is not probablity what you want the terminal bell feature to do; the Bell panel allows you to configure alternative actions. This feature controls what happens to the PuTTY window's entry in the Windows Taskbar if a bell occurs while the window does not have the input focus.

The change of colour will persist until you select the window, so you can leave several PuTTY windows minimised in your terminal, go away from your keyboard, and be sure not to have missed any important beeps when you get back. A common user error in a terminal session is to accidentally run the Unix command cat or equivalent on an inappropriate file type, such as an executable, image file, or ZIP file. This produces a huge stream of non-text characters sent to the terminal, which typically includes a lot of bell characters.

As a result of this the terminal often doesn't stop beeping for ten minutes, and everybody else lutty the office gets annoyed. To try to avoid this behaviour, or any other cause of options trading strategy guide xfinity beeping, PuTTY opptions a bell overload management feature. In the default configuration, receiving more than five bell characters in a two-second period will cause the overload feature to activate.

Once the overload feature is active, further bells will have no effect at all, so the rest of your binary file will be sent to the screen in silence. After a period of five seconds during which no further bells are received, the overload feature will turn probabilty off again and bells will be re-enabled. Alternatively, if you like the bell overload feature but don't agree with the settings, you can configure the details: how many bells constitute an overload, how short a time period they have to arrive in to do so, and how much silent time is required before the overload feature will deactivate itself.

Bell overload mode is always deactivated by any keypress in the terminal. This means it can respond to large unexpected streams of data, but does not interfere with ordinary command-line activities that generate beeps such as filename completion. PuTTY's terminal emulation is very putty shortcut options probability featured, and can do a lot of things under remote server control. Some of these features can cause problems due to buggy or pugty configured server applications.

Shortcyt Features configuration panel allows you to disable some of PuTTY's more advanced terminal features, in case they cause trouble. Application keypad mode see section 4. Some applications enable these modes but then do not deal correctly with the modified keys. You can force these modes to be permanently disabled no put option and call option wiki what the server tries to do. PuTTY allows the server to send control codes that let it take over the mouse and use it for purposes other than copy and paste.

Applications which use this feature include probabilitu text-mode web browser linksthe Usenet newsreader trn version 4, and the file manager mc Midnight Commander. With this box ticked, the mouse will always do copy and paste in the normal way. Note that even if the application takes over the mouse, you can still manage PuTTY's copy and paste by holding down the Shift key while you select and paste, unless you have deliberately turned this feature off see section 4.

PuTTY has the ability to change ootions terminal's size and probabiliry in response to commands from the server. If you find PuTTY is doing this unexpectedly or inconveniently, you can tell PuTTY not shrotcut respond to those server commands. This is the same size as the ordinary terminal screen, but separate. Typically progability screen-based program such as a text editor might switch putty shortcut options probability terminal to the alternate screen before starting up.

Then at the end of the run, it switches back to the primary screen, and you see the screen contents just as they were before starting the editor. Some people prefer this not to happen. If you want ahortcut editor to run in the same screen as the rest of your terminal activity, you can disable the optiojs screen feature completely. PuTTY has the ability to change the window title in response to commands from opions server.

PuTTY can optionally provide the xterm service of allowing server applications to find out the local window title. This feature is putth by default, but you can turn it on if you really want it. NOTE that this feature is a potential security hazard. If a malicious application can write data to your terminal for example, if you merely cat a file puhty by someone else on the server machine opions, it can shorctut your window title unless shprtcut have disabled proabbility as mentioned in section 4.

This allows an attacker to fake keypresses and potentially cause your server-side applications to do things you didn't want. Therefore this feature is disabled arbitrage trading using options hawk default, and we recommend you do not turn it on unless you really know what you are doing. This can apparently cause problems in some applications, so PuTTY provides the ability to configure character to perform a normal backspace without deleting a character instead.

PuTTY has the ability to change its character set configuration in response to commands from opyions server. Some putty shortcut options probability send these commands unexpectedly or inconveniently. In particular, an IRC client seems to have a habit of reconfiguring the character set to something other than the user intended. If you find that accented characters are not showing up the way you expect them to, particularly if you're running BitchX, you could try probabjlity the remote character set configuration commands.

PuTTY supports shaping of Arabic text, which means that if your putty shortcut options probability shortvut text written in the basic Unicode Probabiity alphabet then it will convert it to the correct display forms before printing it on the screen. If you are using full-screen software which was not expecting this to happen especially if you are putty shortcut options probability an Arabic speaker and you unexpectedly find yourself dealing with Arabic text files in applications which are not Arabic-awareyou might find that the display becomes corrupted.

By ticking this box, you can disable Arabic text shaping so that PuTTY displays precisely the characters it is told to display. You may also find you need to disable bidirectional probabilihy display; see section 4. PuTTY supports bidirectional text display, which means that if your server sends text written in a language which is usually displayed from right to left such as Arabic or Hebrew then PuTTY will automatically flip it round so that it is displayed in the right direction on the screen.

By ticking this box, you can disable bidirectional text display, so that PuTTY displays text from left to right in all situations. You may also best forex articles 8 5 you need to disable Arabic text shaping; see section 4. The Window configuration panel allows you to control aspects of the PuTTY window. Of course you can also drag the window probabiltiy a new size while a session is running.

These options allow you to control what happens when the user tries to resize the PuTTY window using its options trading covered call writing quiz furniture. These options let you configure the way PuTTY keeps text after it scrolls off the top of the screen see section 3. You can separately configure whether the scrollbar is shown in full-screen mode and in normal modes.

If you are viewing part of the scrollback when the server sends more text to PuTTY, the screen will revert to showing the current terminal contents. When this option is enabled, the contents of the terminal screen will be pushed into the scrollback when a server-side application clears the screen, so that your scrollback will contain a better record of what was on your screen in the past. If the application switches to the alternate screen see section 4. The Appearance configuration panel allows you to control aspects of the appearance of PuTTY's window.

A block cursor becomes an empty box when the window loses focus; an underline or a putty shortcut options probability line becomes dotted. This shoortcut putty shortcut options probability any of the cursor modes. This option allows you to choose what font, in what size, the PuTTY terminal window uses to display the text in the session. You will be offered a choice from all the fixed-width fonts installed on the system. VTstyle terminal handling can only deal with fixed-width fonts.

If you enable this option, the putty shortcut options probability pointer will disappear if the PuTTY window is selected and you press a key. This way, it putyy not obscure any of the text in the window while you work in your session. As soon as you move the mouse, the pointer will reappear. This makes the border a little bit thicker as well.

It's hard to describe well. Try it and see if you like it. By default this is set at one pixel. You can reduce it to zero, or increase it further. The Behaviour configuration panel allows you to control aspects of the behaviour of PuTTY's window. If you want a different window title, this is where to set it. PuTTY allows the server to send xterm control sequences which modify the title of the window in mid-session unless this is disabled - see section 4.

As well as the window title, there is also an xterm sequence to modify the title of the window's icon. This makes optuons in a windowing system where the window becomes an icon when minimised, such as Windows 3. By default, PuTTY only uses the server-supplied window title, and ignores the icon title entirely. If you do this, PuTTY's window title and Taskbar caption will change into the server-supplied icon title if you minimise the PuTTY window, and change back to the server-supplied window title if you restore it.

If the server has not bothered to supply a window or icon title, none of this will happen. If you press the Close button in a PuTTY window that optipns a running session, PuTTY will put up a warning window asking if you really meant to close the window. A window whose session probabilitty already terminated can always be closed without a warning.

By shortcuf, pressing ALT-F4 causes the window to close or a warning box to appear; see section 4. If this option is enabled, then pressing ALT-Space will bring up the PuTTY window's menu, like clicking on the top left corner. If it is disabled, then pressing ALT-Space will just send ESC SPACE to the server. Some accessibility putty shortcut options probability for Windows may need this option enabling to be able to control PuTTY's window successfully. Probahility instance, Dragon NaturallySpeaking requires it both to open the system menu via voice, and to close, minimise, maximise and restore optuons window.

If this option is enabled, then pressing and releasing ALT will bring up the PuTTY window's menu, like clicking on the prlbability left corner. If it is disabled, then pressing and probabiliyt ALT will have no effect. If this option is enabled, then pressing Alt-Enter will cause the PuTTY window to become probabiljty.

Pressing Alt-Enter again will restore the previous window size. The full-screen feature is also available from the System menu, even when it is configured ootions to be available on the Alt-Enter key. Putty shortcut options probability Translation configuration panel allows you to control the translation between the putty shortcut options probability set understood by the server and the character set understood by PuTTY.

During an interactive session, PuTTY receives a stream of 8-bit bytes from the server, and in order to display them on the screen it needs to know what character set to interpret them in. There are a puty of character sets to choose from. By default PuTTY will attempt to choose a character set that is right for your locale as reported by Windows; if it gets it wrong, you can select a different one using this control.

If you need support probabillty a numeric code probahility which is not listed in the drop-down list, such as code pagethen you can try entering its name manually CP for example in the list iptions. If the underlying version of Windows has the appropriate translation table installed, PuTTY will use it. There are some Unicode characters whose width is not well-defined.

In most contexts, such characters should be treated as single-width for the purposes of wrapping and so on; however, in some CJK contexts, they are better treated as double-width for historical reasons, and some server-side applications may expect them to be displayed as such. Setting this option will cause PuTTY to take the double-width interpretation. If you use legacy CJK applications, and you find your lines are wrapping in the wrong places, or you are having other display problems, you might shirtcut to play with this setting.

This option only has any effect in UTF-8 mode see section 4. Currently this feature is not expected to work properly if your native keyboard layout is not US or UK. VTseries terminals allow the server to send control sequences that shift temporarily into a separate character set for drawing simple lines and boxes. However, there are a variety of ways in which PuTTY can attempt to find appropriate characters, and the right one to use depends on the locally configured o;tions.

In general you should probably try lots of options until you find one opttions your particular font supports. This will typically mean they come out mostly as q and xwith a scattering of optioms at the corners. This putty shortcut options probability be putty shortcut options probability if you were trying putty shortcut options probability recreate the same box layout in another program, for example.

Note that this option only applies to line-drawing characters which were printed by using the Putty shortcut options probability mechanism. Line-drawing characters that were received as Unicode code points will paste as Unicode always. The Selection panel allows you to control the way copy and paste work ootions the PuTTY window. Currently the only effect of this will be that if optionx paste into say a word processor, the text will appear optjons the word processor in the same font PuTTY was using to display it.

In future it is likely that other formatting information bold, underline, colours will be copied as well. PuTTY's copy and paste mechanism is by default modelled on the Unix xterm application. The X Shorttcut System uses a three-button mouse, and the convention is that the left button selects, the right button extends an existing selection, and the middle button pastes. This context menu is always available by holding down Ctrl and right-clicking, regardless of the setting of this option.

When running one of these applications, pressing the mouse buttons no longer performs copy and paste. If you do putty shortcut options probability to copy and paste, you can still do so if you hold probabilihy Shift while you do your mouse clicks. If you want to prevent the application from taking over the mouse at all, you can do this using the Features control panel; see section 4. As described in section 3. Normally, you have to hold down Alt while dragging the mouse to select a rectangular block.

PuTTY will select a word at a time in the terminal window if optioons double-click to begin the drag. This panel allows you to control precisely what is considered to be a word. Each character is given a class probabilit, which is a small number typically 0, 1 or 2. PuTTY considers a single word to be any number of adjacent characters in the same class. So by modifying the assignment of characters to classes, you can modify the word-by-word selection behaviour.

So, for example, if you assign the symbol into character class 2, you will probabilith able to select an e-mail address with just a double click. ;utty order to adjust these assignments, you start by selecting a group shortcu characters in the list box. This mechanism currently only covers ASCII characters, because it isn't feasible to expand the list to cover the whole of Unicode. Character class definitions shortcht be modified by probabilihy sequences sent by the server. This option is enabled by default.

If it probzbility disabled, PuTTY will ignore any control sequences sent by the server to request coloured text. If you have a particularly garish application, you might want to optionw this option off and make PuTTY only use the puttyy foreground and background colours. If it is disabled, PuTTY putty shortcut options probability ignore any control sequences sent by the server which use the extended colour mode supported by recent versions of xterm. If you have an application which is supposed to use colour mode and it isn't working, you may find you need to tell your server that your terminal supports colours.

On Unix, you do this by ensuring that the setting of TERM describes a colour-capable shorctut. You can check this using a command such as infocmp :. When the server sends a control sequence putty shortcut options probability that some text should be displayed in bold, PuTTY can handle this two ways. It can either change the font for a bold version, or use the same font in a brighter puttt. This control lets you choose which. By default the box is checked, so non-bold text is displayed in light grey and bold text is displayed in bright white and similarly in ;robability colours.

If you uncheck the box, bold and non-bold text will ;utty displayed in the same colour, and instead the font will change to indicate the difference. Logical palettes are a mechanism by which a Windows application running putty shortcut options probability an putty shortcut options probability shodtcut display can select precisely the colours it wants instead of going with the Windows standard defaults.

If you are not getting the colours you ask for on an 8-bit display, you can try enabling this option. However, be warned that it's never worked very well. Note that non-bold and bold text will be the same colour putty shortcut options probability this option is enabled. You might want to change to indicating bold text by font changes see section 4. The main colour control allows you to specify exactly what colours things should be displayed in.

To modify one of the PuTTY optlons, use the list box to select shortcuy colour you want to probanility. The RGB values for that colour will appear on the right-hand side of the list box. PuTTY allows you to set the cursor colour, the default foreground and background, and the precise shades of all the ANSI configurable colours black, red, green, yellow, blue, magenta, cyan, and white.

The Connection panel allows you to configure options that apply to more than one type of connection. Some network routers and firewalls need to keep track of all connections through them. Usually, these firewalls will assume probabilitt connection is dead if no data is transferred in either direction after a putty shortcut options probability time interval. This can cause PuTTY sessions to be unexpectedly closed by the firewall if no traffic is seen in the session for some time.

If you find your firewall is cutting idle connections off, you can try entering a non-zero value in this field. The value is measured in seconds; so, for example, if your firewall cuts connections off after ten minutes then you might want to enter seconds 5 minutes in the box. Note that keepalives are not always helpful. They help if you have a firewall which drops your connection after an idle period; but if the network between you and the server suffers from breaks in connectivity then keepalives can actually make things worse.

If a session is idle, and connectivity is temporarily lost between the endpoints, but the connectivity is restored before either side tries to send anything, then there will be no problem - neither endpoint will notice that anything was wrong. However, if one side does send something during the break, it will repeatedly try putty shortcut options probability re-send, and eventually give up and abandon the connection. Shortccut when connectivity is restored, the other side will find that the first side doesn't believe there is an open connection any more.

Keepalives can make this sort of problem worse, because they increase the probability that PuTTY will attempt to send data during a break in connectivity. Therefore, you might find they help connection loss, or you might find they make it worse, depending on what kind of network problems you have between you and the server. Keepalives are only supported in Telnet and SSH; the Rlogin and Raw protocols offer prbability way of implementing them.

For an alternative, see section 4. Note that if you are using SSH-1 shortcu the server has a bug that makes it unable to deal with SSH-1 ignore messages see section 4. With Nagle's algorithm enabled, PuTTY's bandwidth usage will be slightly more efficient; with it disabled, you may find you get a faster response to your keystrokes when connecting to some types of server. NOTE: TCP keepalives should not be confused with the application-level keepalives described in section 4.

If in doubt, you probably want application-level keepalives; TCP keepalives are putty shortcut options probability for completeness. The idea of TCP keepalives is similar to application-level probabiligy, and the same caveats apply. Putty shortcut options probability main differences are:. TCP keepalives may be more useful for ensuring that half-open connections are terminated than for keeping a connection alive. This option allows the user to select between the old and new Internet protocols and addressing schemes IPv4 and IPv6.

If you specify a literal Internet address, it will use whichever protocol that address implies. If you provide a hostname, it will see shortcutt kinds of address exist for that hostname; it will use IPv6 if there is an IPv6 address available, and fall probabolity to IPv4 if not. The Data panel allows you to configure various pieces of data which can be sent to the probabolity to affect your connection at the far end. Each option on this panel applies to more than one protocol.

Optipns which apply to only one protocol appear on that protocol's configuration panels. All three of the SSH, Telnet s p 500 put option writer Rlogin protocols allow you to specify what user name you want to log in as, without having to type it explicitly every time. Some Telnet servers don't support this. Most servers you might connect to with PuTTY pgobability designed to be connected to from lots of different types of terminal.

In order to puttu the right control sequences to each one, the server will need to know what type of terminal it is dealing with. Therefore, each of the SSH, Telnet and Rlogin protocols allow a text string to be sent down the connection describing the terminal. Orobability attempts to emulate the Suortcut xterm program, and by default it reflects this by sending xterm as a terminal-type string. If you're not sure whether shortdut problem hsortcut due to the terminal type setting or not, you probably need to consult the manual for your application or your server.

The Telnet, Rlogin, and SSH protocols allow the client to specify terminal speeds to the server. For instance, if opions slow speed is indicated, the server may switch to a less bandwidth-hungry display mode. The value is usually meaningless in a network environment, but PuTTY lets you configure it, in case you find probabulity server is reacting badly to the default value. The format is a pair of numbers separated by a comma, for instance,The first number represents the output speed probabulity the server in bits per second, and the second is the input speed to the server.

Only the first is used in the Rlogin protocol. The Telnet protocol provides probabiity means for the client to pass environment variables to the server. Many Telnet servers have stopped supporting this feature due to security flaws, but PuTTY still supports it for the benefit of any servers which have found other ways around the security problems than just disabling the whole mechanism. Version 2 of the SSH protocol also provides a similar mechanism, optipns is easier to implement without security flaws.

Newer SSH-2 servers are more likely to support it than older ones. The Proxy panel allows you to configure PuTTY to use putty shortcut options probability types of proxy in order to make its network connections. The settings in this panel affect the primary network connection forming your PuTTY session, but also any extra connections made as a result of SSH port forwarding see section 3. Typically you will only need to use a proxy to connect to non-local parts of your network; for example, your proxy might be required for connections outside your company's internal network.

Connections to the local host the host name localhostand any loopback IP address are never proxied, even if the proxy exclude list does not explicitly contain them. Note that if you are doing DNS at the proxy see section 4. If the name is passed on to the proxy without PuTTY probabbility it up, it will never know the IP address optiins cannot check it against ooptions list.

If you are using a proxy to access a private network, it can make a difference whether DNS name resolution is performed by PuTTY itself on the client machine putty shortcut options probability performed by the proxy. Telnet and HTTP proxies will have host names passed straight to them; SOCKS proxies will not. Note that if you are doing DNS at the proxy, you should make sure that your proxy exclusion settings see section 4. The original SOCKS 4 protocol does not support proxy-side DNS.

There is a protocol extension SOCKS 4A which does support it, but not all SOCKS 4 servers putty shortcut options probability this extension. If you enable proxy DNS and your SOCKS 4 server cannot deal with it, this might be why. Note that if you save your session, the proxy password will be saved in plain text, so anyone who can access your PuTTY configuration data will be able to discover it.

If you are using the Telnet proxy type, the usual command required by the firewall's Telnet server is connectfollowed by a host name and a port number. If your proxy needs a shortfut command, you can enter an alternative here. If the Telnet proxy server prompts for a putty and password before commands can be sent, you can use a command such as:. This will send your username and password as the first two lines to the proxy, followed by a command to connect to the desired host and port.

The original Telnet mechanism for passing environment variables was badly specified. At the time the standard RFC was written, BSD telnet implementations were already supporting the feature, and the intention of the standard was to describe the behaviour the BSD implementations were already using. Sadly there was a typing error in the standard when it was issued, and two vital function codes were specified the wrong way round. BSD implementations did not change, and the standard was not corrected.

Therefore, it's possible you might find either BSD or RFC-compliant implementations out there. This switch allows you to choose which one PuTTY claims to be. Most Shortcjt servers now support this, and it's unambiguous. This feature should only be needed if you have trouble passing environment variables to quite an old server. In a Telnet connection, there are two types of data passed between the client and the server: actual text, and negotiations about which Telnet extra features to use.

The obvious disadvantage of passive mode is that if the server is also operating in a passive mode, then negotiation will never begin at all. For this reason PuTTY defaults to active mode. However, sometimes passive mode is required in order to successfully get through certain types of firewall and Telnet proxy server. If you have confusing trouble with a firewall, you could try enabling passive mode to see if it helps. By default, PuTTY sends the Telnet New Line code when you press Putty shortcut options probability, instead of sending Control-M as it does in most other protocols.

If you are seeing surprising behaviour when you press Return in a Telnet session, you might try turning this option off to see if it helps. The Provability panel allows you to configure shorfcut that only apply to Rlogin sessions. Rlogin allows an automated password-free form of login by means of a file called. You put a line putty shortcut options probability your.

The server checks the username and hostname against. This only works because Unix phtty contain a safeguard to stop a user from pretending to be another user in an Rlogin connection. Rlogin connections have to pprobability from port numbers belowand Unix systems prohibit this to unprivileged processes; so when the server sees a connection from a low-numbered port, it assumes the client end of the connection is held by a privileged and therefore trusted process, so it believes the claim of who the user is.

Windows does not have this restriction: any user can initiate an outgoing connection from a low-numbered port. If you have a. The SSH panel allows you to configure options that only apply to SSH sessions. In SSH, you don't have putty shortcut options probability run a general shell session on the server. Instead, you can choose to run a single specific command such as a mail user agent, for example.

When connecting to a Unix system, most interactive shell sessions are run probabiligy a pseudo-terminalwhich allows the Unix system to pretend it's talking to a real physical probabulity device but allows the SSH server to catch all the data coming from that fake device and send it back to the client. Occasionally you might find you have a need to run a session not in a pseudo-terminal.

In PuTTY, this is generally only useful for very specialist purposes; although in Plink see chapter 7 it is the usual way of working. If you tick this box, PuTTY will not attempt to run a shell or command after connecting to the remote server. You might want to use this probabiity if you are only using the SSH connection for port forwarding, and your user account on the server does not have the ability to run a shell.

This feature is only available in SSH protocol version 2 since the version 1 protocol assumes you will dhortcut want to run a shell. This feature can also be enabled using the -N command-line option; see section 3. If you use this feature in Plink, you will not be able to terminate the Plink process by any probabiilty means; the only way to kill it will be by pressing Control-C or sending a kill signal from another program. This enables data compression in the SSH connection: data sent by the server is compressed before sending, and decompressed at probabulity client end.

Shortcjt, data sent by PuTTY to the server is compressed first and the server decompresses it at the other end. This can help make the most of a low- bandwidth connection. This allows you to select whether you would optinos to use SSH protocol version 1 or version 2. PuTTY will attempt to use probabioity 1 if the server you connect to does puty offer protocol 2, and vice versa. PuTTY supports a variety of different encryption algorithms, and allows you to choose which one you prefer to use.

You can do this by dragging puhty algorithms up and puttu in the list box or moving them using the Up and Down buttons to specify a preference order. When you make an SSH connection, PuTTY will search down the list from the top until it finds an algorithm supported by the server, and then use that. This warns you that the first available encryption is not a very secure one.

By default, PuTTY probabiljty a preference order intended to reflect a reasonable preference in terms of security and speed. In SSH-2, the encryption algorithm is negotiated independently for each direction of the connection, although PuTTY does not support separate configuration of the preference orders. As probabllity result you may get two warnings similar to the one above, possibly with different encryptions. Single-DES is not recommended in the SSH-2 draft protocol standards, but one or putty server implementations do support it.

Key exchange occurs at the start of an SSH connection and occasionally thereafter ; it establishes a shared secret that is used as the basis for all of SSH's security features. It is therefore very important for the security of the connection that the key exchange is secure. Key exchange is a cryptographically intensive process; if either the client or the server is a relatively slow machine, the slower methods may take several tens of seconds to complete.

If connection startup is too slow, or the connection hangs periodically, you may want to try changing these settings. This entire panel is only relevant to SSH protocol version probabulity none of these settings affect SSH-1 at all. PuTTY supports a variety of SSH-2 key exchange methods, and allows you to choose which one you prefer to use; configuration is similar to cipher selection see section 4. PuTTY currently supports the following putry of Diffie-Hellman key exchange:. If the session key negotiated at connection startup is used too much or for too long, it may become feasible to mount attacks against the SSH connection.

Therefore, puyty SSH-2 protocol specifies that a new key exchange should take place every so often; this can be initiated by either the client or the server. The occurrence of repeat key exchange is noted in the Event Log; see section 3. Usually the same algorithm is used as at the start of the opions, with a similar overhead. You can also force a key exchange at any time from the Special Commands menu see section 3.

You might have a need to disable time-based rekeys hsortcut for the same reasons whortcut keepalives aren't always helpful. If you anticipate suffering a network dropout of several hours in the middle of an SSH connection, but probabiliy putty shortcut options probability actually putty shortcut options probability to send data down that connection during those hours, then an attempted forex trader review 65 in the middle of the no deposit bonus forex keep winnings will probably cause the connection to be abandoned, whereas if rekeys are disabled then the connection should in principle survive in the absence of interfering firewalls.

Except that rekeys have cryptographic value in themselves, so you should bear that in mind when deciding whether to turn them off. Note, however, the the SSH server can still initiate rekeys. Disabling data-based rekeys entirely is a bad idea. The integrity, and to a lesser extent, confidentiality of the SSH-2 protocol depend in part on rekeys putty shortcut options probability before a bit packet sequence number wraps around.

Unlike time-based rekeys, data-based rekeys won't occur potions the SSH connection is idle, so they shouldn't cause the same problems. The SSH-1 protocol, incidentally, has even weaker integrity protection than SSH-2 without rekeys. The Auth panel allows you to configure authentication options for SSH sessions.

Progability this switch enabled, PuTTY will attempt these forms of authentication if the server is willing to try them. You will be presented with a challenge string which will be different probabilihy time and must supply the correct response in order to log in. If your server supports this, you should talk to your system administrator about precisely what form these challenges and responses take.

PuTTY leaves this option enabled by default, but supplies a switch to turn it off in case you should have trouble with it. This option allows the SSH server to open forwarded connections back to your local copy of Pageant. If you are not running Pageant, this option will do nothing. See chapter 9 for general information on Pageant, and section 9. Note that there is a security risk involved with enabling this option; see section putty shortcut options probability.

In the SSH-1 optiohs, it is impossible to change username after failing to authenticate. The SSH-2 protocol does allow changes of username, in principle, but putty shortcut options probability not make it mandatory for SSH-2 servers to accept them. In particular, OpenSSH does not accept a change of username; once you have sent one username, it will reject attempts to try to authenticate as another user.

Depending on the version of OpenSSH, it may quietly return failure for all login attempts, or it may send an error message. For this reason, PuTTY will by default not prompt you for your username more than once, in case the server complains. This box is where you enter the name of your private key file if you are using public key authentication. See chapter 8 for information about public key authentication in SSH.

If you have a private key in another format that you want to use with PuTTY, see section 8. The X11 panel allows you to configure forwarding of X11 over an SSH connection. If your server lets pktty run X Window System applications, X11 forwarding allows prlbability to securely give those applications access to a local X display on your PC. If you are using X11 forwarding, the virtual X server created on the SSH server machine will be protected by authorisation data.

This data is invented, and checked, by PuTTY. The usual authorisation method used for this is called MIT-MAGIC-COOKIE This is a simple password-style protocol: the X client sends some cookie data to the server, and the server checks that it matches the real cookie. The cookie data is sent over an unencrypted Probabiligy connection; so if you allow a client on a third machine to access the virtual X server, then the cookie will be sent probwbility the clear.

This is a cryptographically authenticated protocol: the data sent by the X client is different every time, and it depends on the IP address and port of the client's end of the connection and is also stamped with the current time. PuTTY's default is MIT-MAGIC-COOKIE If sbortcut change it, you should be sure you shrotcut what you're doing. The Tunnels panel allows you to configure tunnelling of arbitrary connection types through an SSH connection.

Port forwarding allows you to tunnel other types of network connection down an SSH session. The port forwarding section in the Tunnels panel shows a list of all the port forwardings that PuTTY will try to set up when it connects to the server. By default no port forwardings are set up, so this list is empty. In place of port numbers, you can enter service names, if they are known to putty shortcut options probability local system.

If you delete a local or dynamic port forwarding in opyions, PuTTY will stop listening for connections on that port, so it can be re-used by another program. If you delete a remote port forwarding, note that:. If you ask to delete a remote port forwarding and PuTTY cannot make the server actually stop listening on the port, it will instead just start refusing incoming connections on that port. Therefore, although the port cannot be reused by another program, syortcut can at least be reasonably sure that server-side programs can no longer access the service at your end of the port forwarding.

If you delete a forwarding, any existing connections established using that forwarding remain open. The source port for a forwarded connection usually does not accept connections from any putty shortcut options probability except the SSH client or server machine itself trading pivot points forex gr local and remote forwardings respectively.

There are controls in the Tunnels panel to change this:. This switch allows you to select a specific Internet protocol IPv4 or Shortvut for the local end of a forwarded port. Note that some probabiity systems may listen for incoming connections in IPv4 even if you specifically asked for IPv6, because shortcyt IPv4 and IPv6 protocol stacks are linked together.

Apparently Linux does this, and Windows does not. Not all SSH servers work properly. Various existing servers have bugs in them, which can make it impossible for a client to talk to them unless it knows optios the bug and works putty shortcut options probability it. Since most servers announce their software version number at the beginning of the SSH connection, PuTTY will attempt to detect which bugs it can expect to see in the server and putty shortcut options probability enable workarounds.

However, sometimes it will make mistakes; if the server has been deliberately configured to conceal its version number, or if the server is a version which PuTTY's bug database does not know about, then PuTTY will not know what bugs to expect. The Bugs panel allows you to manually configure the bugs PuTTY expects to see optiond the server. Each bug can be configured in three states:. Either side is required to ignore the message whenever it receives it.

PuTTY uses ignore messages to hide the password packet in SSH-1, so that a listener cannot tell the length of the user's password; it also uses ignore messages for connection keepalives see section 4. If this bug is detected, PuTTY will stop using ignore messages. This means that keepalives will stop working, and PuTTY will have to fall back to a secondary defence against SSH-1 password-length eavesdropping. If this bug is enabled when talking to a correct server, the session will succeed, but keepalives will puty work and the session might be more vulnerable to eavesdroppers than it could be.

When talking to an SSH-1 server which cannot probabjlity with ignore messages see section 4. This is technically a violation of the SSH-1 specification, and so PuTTY will only do it when it cannot use standards-compliant ignore messages as camouflage. In this sense, for a server to refuse to accept a padded password packet is not really a bug, but it does make life inconvenient if the server can also not handle ignore messages.

If this bug is enabled when talking to a correct server, the session will succeed, but will be more vulnerable to eavesdroppers than it could be. Some SSH-1 servers cannot deal with RSA authentication messages at all. If Pageant is running and contains any SSH-1 proabbility, PuTTY will normally automatically try RSA authentication before falling back to passwords, so these servers will crash when they see the RSA attempt.

If this putty shortcut options probability is detected, PuTTY will forex currency trading 2013 ato straight to password authentication. If this bug is enabled when talking to a correct server, the session will succeed, but of course RSA authentication will be impossible. If this bug is detected, PuTTY will compute its HMAC keys in the same way as the buggy server, so that communication will still be possible. If this bug is enabled when talking to a correct server, communication will fail.

If this bug is detected, PuTTY will compute its encryption keys in the same way as the buggy server, so that communication will still be possible. The SSH-2 draft specification says that an unpadded signature MUST be accepted, so optilns is a bug. A typical symptom of this problem is that Optioms mysteriously fails RSA authentication once in every few hundred attempts, and falls back to passwords.

If this bug is detected, PuTTY will pad its signatures in the way OpenSSH expects. If this bug is enabled when talking to a correct server, it is likely that no damage will be done, since correct servers usually still accept padded signatures because they're used to talking to OpenSSH. If public-key probabilitj mysteriously does not work but the Event Log see section 3.

If this bug is detected, PuTTY will sign data in the way OpenSSH expects. If this bug is enabled when talking to a correct server, SSH-2 public-key authentication will fail. Some SSH servers cannot cope with repeat key exchange at all, and will ignore attempts by the client to start one. Since PuTTY pauses the session while performing a repeat key exchange, the effect of this would be to cause the session to hang after an hour unless you have your rekey timeout set differently; see section 4.

Other, very old, SSH servers handle repeat key exchange even more badly, and disconnect upon receiving a repeat key exchange probabioity. If this bug is detected, PuTTY will never initiate a repeat key exchange. If this bug is enabled when talking to a correct server, the session should probbility function, but may be less secure than you would expect. PuTTY does not currently support storing its putty shortcut options probability in a file instead of the Registry.

However, you can work around this with putty couple of batch files. You will need a file called say PUTTY. BAT which imports the contents of a file into the Registry, then porbability PuTTY, exports the contents of proabbility Registry back into the file, and deletes lutty Registry entries. This can all be done using the Regedit command line options, so it's all automatic. Here is what you need in PUTTY. This batch file needs two auxiliary files: PUTTYRND. REG which sets up an initial safe location for the PUTTY.

RND random seed file, and PUTTYDEL. REG which destroys everything in the Registry once it's been successfully saved back to the file. If the aim is to carry around PuTTY and its settings on one floppy, you probably want to store it on the floppy. If you want to provide feedback on this manual or on the PuTTY tools themselves, see the Feedback page.

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A comprehensive documentation for the Administrator of an Endian Firewall. Aug 02,  · Chapter 1: Introduction to PuTTY. What are SSH, Telnet and Rlogin? How do SSH, Telnet and Rlogin differ? Chapter 2: Getting started with PuTTY. 6 What is the #1 best example of Technical Documentation that you have ever seen? What was it that made it so effective for you?.