2009/11/11 Dean Hamstead <d...@fragfest.com.au>:
> sshd for example, will stall for quite an annoying amount of time trying to
> do a reverse lookup. unless you dont actually have name servers configured
> at all.

Correct. Though specifically with sshd you can turn off reverse-dns
lookup with "UseDNS no" in /etc/ssh/sshd_config.

He should probably sniff his own traffic and see what needs to be
allowed through or turned off.

> also, not syncing the clock makes date stamps in logs almost entirely
> unreliable.

Also very true unless maybe his sever is a virtual one on top of a
platform which provides an accurate clock.

--Amos
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