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Re: icq



The firewall probably keeps its on DNS cache for having better
performance, but this surely hurts the performance..

Eran.

On Sun, 15 Apr 2001, Alex Shnitman wrote:

> Hi, ishaybas!
>
> On Sun, Apr 15, 2001 at 04:59:37PM +0200, you wrote the following:
>
> > Some firewalls (checkpoint) allow you to block by dns domain name.
> > you just block all traffic to .icq.com, .mirabilis.com, end of story.
>
> Does this mean that for every packet that goes through the firewall,
> it runs a DNS reverse lookup to find the hostname of the destination?
> I just wonder what kind of performance this firewall delivers.
>
> Sounds very strange to me.
>
>
> --
> Alex Shnitman <alexsh@hectic.net>
> http://alexsh.hectic.net/   UIN 188956
> PGP 0xEC5D619D / E1 F2 7B 6C A0 31 80 28  63 B8 02 BA 65 C7 8B BA
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