From: Marek Kierdelewicz <marek@piasta.pl>
To: Leonardo Carneiro <lscarneiro@veltrac.com.br>
Cc: "netfilter@vger.kernel.org" <netfilter@vger.kernel.org>
Subject: Re: blocking only https access
Date: Mon, 8 Jun 2009 19:17:42 +0200 [thread overview]
Message-ID: <20090608191742.58ddfe8a@catlap> (raw)
In-Reply-To: <4A2D43F6.3000309@veltrac.com.br>
>Hi everyone,
Hi,
>I have readed a lot here in the list and in other places that i SHOULD
>NOT use domain names in iptables, cause it will result in a dns
>request to every packet that reachs that rule.
Not really. Domainname is resolved at the time of rule addition to a
ruleset. Netfilter stores the destination address in numerical form.
You can use CRON to restart firewall every night or even every hour.
This would allow you to have the current server addresses in a
ruleset.
Cheers,
Marek Kierdelewicz
next prev parent reply other threads:[~2009-06-08 17:17 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-08 17:01 blocking only https access Leonardo Carneiro
2009-06-08 17:17 ` Marek Kierdelewicz [this message]
2009-06-08 17:23 ` Leonardo Carneiro
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