[SOLVED] Logging users of NTPD

Dagger907 · 09-18-2013, 06:34 AM

Dear members!

I've come across a bit of a puzzle.

We are moving from a old NTP server to a new one. I need to log which clients are using the existing NTP server, so I have a overview of them before we make the switch.

I've tried to set up logging in ntp.conf, but all that is logged is the external servers that are used to sync time.

It's a quite dated server with Ubuntu 8.04.1 and ntpd 4.2.4p4.

Any ideas?

Best regards,
Dagger907

acid_kewpie · 09-18-2013, 08:25 AM

Personally I'd just use iptables:

iptables -A INPUT -p udp -m udp --dport 123 -j LOG

then see what shows up from that.

Dagger907 · 09-19-2013, 02:54 AM

Thanks alot acid_kewpie, that worked like a charm.

I was concidering iptables, but was not sure.