I think it means the reverse dns isn't correct for that host.

On Tue, Apr 13, 2010 at 1:47 AM, wu tingyi <wendytin...@gmail.com> wrote:
> Hello all,
> ** Alert 1271055172.24104: mailĀ  - syslog,sshd-->what dose this mean?

It is an alert, it happened at 1271055172.24104, it is a member of
groups syslog and sshd.

> 2010 Apr 12 14:52:52 cl6g505->/var/log/secure --->is it means the alert is
> save in /var/log/secure?

The original event was found in /var/log/secure.

> Rule: 5703 (level 10) -> 'Possible breakin attempt (high number of reverse
> lookup errors).'
> Src IP: l312c09.sitfypj.nyp.edu.sg
> User: (none)
> Apr 12 14:52:50 cl6g505 sshd[1652]---is it means port no?

1652 is the pid.

>: reverse mapping
> checking getaddrinfo for l312c09.sitfypj.nyp.edu.sg failed - POSSIBLE
> BREAK-IN ATTEMPT!
> Apr 12 22:26:38 cl6g505 sshd[1360]: reverse mapping checking getaddrinfo for
> l312c10.sitfypj.nyp.edu.sg failed - POSSIBLE BREAK-IN ATTEMPT!
> Apr 12 21:21:50 cl6g505 sshd[506]: reverse mapping checking getaddrinfo for
> l312c09.sitfypj.nyp.edu.sg failed - POSSIBLE BREAK-IN ATTEMPT!
> Apr 12 21:09:22 cl6g505 sshd[363]: reverse mapping checking getaddrinfo for
> l312c10.sitfypj.nyp.edu.sg failed - POSSIBLE BREAK-IN ATTEMPT!
> Apr 12 20:51:20 cl6g505 sshd[311]: reverse mapping checking getaddrinfo for
> l312c10.sitfypj.nyp.edu.sg failed - POSSIBLE BREAK-IN ATTEMPT!
>
>
> Can anybody help me look at the qns?
> Can explain me the whole event about?
> i need it in a hurry..
> thanks=)
>
> Regards,
> tingyi
>


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