From: <lists@sterenborg.info>
To: Netfilter <netfilter@vger.kernel.org>
Subject: RE: Dynamic IP address in a rule?
Date: Mon, 27 Apr 2009 08:41:20 +0200 [thread overview]
Message-ID: <000001c9c703$2d3cabf0$87b603d0$@info> (raw)
In-Reply-To: <3678.87.196.49.84.1240774988.squirrel@webmail.decimal.pt>
> That's a nice question, instead of the dynamic IP on the rule,
> having a dynamic host on it like:
>
> Iptables -I INPUT -I eth0 -d myhost.dyndns.org -p tcp --dport 80 -j
> ACCEPT
>
> When this run's, the rule will stay with the IP address that was
> grabbed from the dynamic host, and when the IP changes, the rule
> won't work anymore.
> My question is, there's no way to make iptables to check always the
> host instead of translation the host do IP on the rule apply stage?
If iptables would have to perform a DNS lookup everytime a packet
passes, I think it would be terribly slow and probably not usable for
packetfiltering.
Grts,
Rob
next prev parent reply other threads:[~2009-04-27 6:41 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-25 12:12 Dynamic IP address in a rule? Paddie O'Brien
2009-04-26 19:43 ` Jorge Bastos
2009-04-26 22:38 ` Bruno Moreira Guedes
2009-04-27 8:30 ` Jorge Bastos
2009-04-27 8:52 ` Daniel Huhardeaux
2009-04-27 8:56 ` Jorge Bastos
2009-04-27 11:48 ` Pascal Hambourg
2009-04-27 6:41 ` lists [this message]
2009-04-27 6:46 ` Ivan Petrushev
2009-04-27 6:56 ` lists
2009-04-27 7:08 ` Ivan Petrushev
2009-04-27 13:23 ` Bruno Moreira Guedes
2009-04-27 11:57 ` Pascal Hambourg
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