Reverse DNS lookup & syslog (Debian 4.0)

Brian O'Mahony brian.omahony at curamsoftware.com
Fri Feb 12 09:25:20 CST 2010


Tried use_dns - no change.

Also I have Debian 3.0 and 4.0 servers that I can't upgrade. Some internal legacy software that no one is willing to rewrite only runs on specific version of CVS... :(

B

From: Todd LaPittus [mailto:todd at lapittus.com]
Sent: Friday, February 12, 2010 3:15 PM
To: Brian O'Mahony
Cc: linux-poweredge at lists.us.dell.com
Subject: Re: Reverse DNS lookup & syslog (Debian 4.0)

For syslog-ng, try this directive:

use_dns(yes|no);

Also, you might consider doing a dist-upgrade to lenny on your etch boxes- security support for etch officially ends this Monday:

http://www.debian.org/News/2010/20100121

//Todd

Brian O'Mahony wrote:
Im running Debian 4.0 on a number of PowerEdge servers here and I am having some issues with syslog. These machines run various applications. In this case ill take cvs. When a remote machine connects to cvs I get :
Feb 12 14:54:04 buzz runcvs[1533]: connect from 172.16.165.144 (172.16.165.144)

The machines are all pretty much just basic installs of Debian, with resolve.conf pointed at windows DNS servers.  When I do an nslookup of the IP:

buzz:~# nslookup 172.16.165.144
Server:         172.16.164.100
Address:        172.16.164.100#53

144.165.16.172.in-addr.arpa     name = galvin.XXXXX.com.

As our domain use DHCP for the windows clients, when I go back a few days later, the syslog entries are close to useless to mea s the IP may have changed. How do I get syslog to log the hostname of the connecting machine?

I have tried syslog-ng (albeit I didn't change many parameters) but to the same effect. I still get the IPs of the connecting machine.

Any ideas?

B



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