DNS UDP port 0 activity

[Mark.Andrews at nominum.com]

	Modern nameds just drop packets from port 0.  Old versions
	respond to queries from port 0.  If your named is responding
	to port zero you really need to upgrade it as it likely has
	other problems that are far more significant.

	Mark

> 
> Howdy Folks,
> 
> The staff who support the firewalls at my site have asked
> if I know anything about DNS/BIND sending queries from
> port 53 to port 0.
> 
> Most of the DNS traffic monitored is the normal port 53 to
> port 53 and high ports to port 53 but a significant amount
> has a destination port of zero (0).
> 
> Our firewall is Firewall-1 from Checkpoint.
> 
> Any ideas?
> 
> Bruce Hooker
> 
> 
--
Mark Andrews, Nominum Inc.
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark.Andrews at nominum.com