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Servers announcing themselves as `Sun_SSH_1.0' apparently cannot

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deal with rekeys at all: they totally ignore mid-session KEXINIT
sent by the client. Hence, a new bug entry so we don't try it.

[originally from svn r5092]
This commit is contained in:
Simon Tatham
2005-01-11 10:37:55 +00:00
parent 378dbbb06b
commit e7b53c3ad5
6 changed files with 68 additions and 17 deletions
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18
doc/config.but
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@ -2662,6 +2662,24 @@ SSH2 public-key authentication will fail.
This is an SSH2-specific bug.
\S{config-ssh-bug-rekey} \q{Ignores key re-exchange completely}
\cfg{winhelp-topic}{ssh.bugs.rekey2}
Some very old 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
\k{config-ssh-kex-rekey} for more about rekeys).
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 still function, but may be less secure than you
would expect.
This is an SSH2-specific bug.
\H{config-file} Storing configuration in a file
PuTTY does not currently support storing its configuration in a file