[CentOS] crash with CentOS 6.3 2.6.32-220.4.1.el6.x86_64

Fri Jun 14 15:52:26 UTC 2013
m.roth at 5-cent.us <m.roth at 5-cent.us>

drichards at globalcerts.net wrote:
>> drichards at globalcerts.net wrote:
>>> Has anyone seen a crash triggered by an incoming telnet connection? It
>>> seems that that's what we are experiencing on a certain system.
>>> It happens randomly, hard to reproduce. Attached is the crash screen
>>> shot.
>>
>> Sorry, this is a text-only mailing list - attachments are deleted.
>>
>> Incoming telnet connection: *why* is there an incoming telnet
>> connection? The only thing I know anyone using telnet for *anywhere*
>> in the last six or eight years is to check a mail or other port, to
>> see if it responds. It should NOT BE USED for anything anymore. If
>> you've got users using it, break them of that habit, yesterday,
>> because you are incredibly vulnerable to anyone who cares.
>>  Move them to ssh.
>>
> Thanks for the comment. It was not a user, but a monitoring tool that was
> using telnet. We will be re-writing that tool.

Ok... then I'd suggest watching with tcpdump, or strace, on the receiving
box, to watch what it's doing, and manually run it, and see if you can get
any clues.

      mark

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