full-disclosure - Re: sshd logins without a source

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date: Fri, 23 Sep 2011 19:42:52 +1000
From: paul.szabo@...ney.edu.au
To: full-disclosure@...ts.grok.org.uk, lists@...ckhat.bz
Subject: Re: sshd logins without a source

> ... I can see in each servers sshd logs an entry like the following:
> Sep 22 12:57:14 test-vm sshd[25002]: pam_unix(sshd:session): session opened for user root by (uid=0)
> Sep 22 12:57:32 test-vm sshd[25002]: pam_unix(sshd:session): session closed for user root
> ... seems odd that there is no IP address corresponding with the
> login, I can't seem to reproduce that on my test servers.

I do not think that sshd normally logs its source. What do you mean that
you cannot reproduce? - 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"

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

_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/