[CentOS] pop3 attack

[Jeff]

On Tue, Dec 9, 2008 at 2:17 PM, James Pifer <jep at obrien-pifer.com> wrote:
> I was looking at my maillog and it looks like someone is trying to get
> into my pop3 server.
>
> Dec  9 15:28:54 mailserver dovecot: pop3-login: Aborted login: user=<alexis>, method=PLAIN, rip=::ffff:66.167.184.203, lip=::ffff:192.168.1.2
> Dec  9 15:29:08 mailserver dovecot: pop3-login: Aborted login: user=<alfonso>, method=PLAIN, rip=::ffff:66.167.184.203, lip=::ffff:192.168.1.2
> Dec  9 15:29:14 mailserver dovecot: pop3-login: Aborted login: user=<alexis>, method=PLAIN, rip=::ffff:66.167.184.203, lip=::ffff:192.168.1.2
> Dec  9 15:29:18 mailserver dovecot: pop3-login: Aborted login: user=<alfonso>, method=PLAIN, rip=::ffff:66.167.184.203, lip=::ffff:192.168.1.2
> Dec  9 15:29:36 mailserver dovecot: pop3-login: Aborted login: user=<alfred>, method=PLAIN, rip=::ffff:66.167.184.203, lip=::ffff:192.168.1.2
>
> How worried should I bee about this? Any suggestions for dealing with
> it?

>From the log snippet, it does not appear to be a distributed attack.
Block 66.167.184.203 at the router

-- 
Jeff