full-disclosure - Re: sshd logins without a source

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Message-Id: <201109231205.p8NC5aQk026676@bari.maths.usyd.edu.au>
Date: Fri, 23 Sep 2011 22:05:36 +1000
From: paul.szabo@...ney.edu.au
To: full-disclosure@...ts.grok.org.uk, laurelai@...echan.org
Subject: Re: sshd logins without a source

Dear Laurelai,

>> I do not think that sshd normally logs its source. ... To produce the
>> desired log, I added to /etc/hosts.allow the line
>> sshd : all : spawn /usr/bin/logger -t"%d[%p]" "Connection source %h port %r"
>
> Don't most modern Linux distros log sshd by default? If for whatever
> reason yours doesn't you can set the log level in the sshd config.

My Debian sshd comes with "LogLevel INFO" in /etc/ssh/sshd_config.
I never found documentation on what a "LogLevel VERBOSE" would do,
so never changed it; my hosts.allow line does exactly what I want,
and a similar line can do it for telnetd also. (Don't laugh...)

Cheers, Paul

Paul Szabo   psz@...hs.usyd.edu.au   http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics   University of Sydney    Australia

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