Re: Bastion Firewall Host Redirect Question

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Hello,

Billy Crook a écrit :
> On Tue, Dec 14, 2010 at 08:54, iic1tls <iic1tls@xxxxxxxxx> wrote:
>> I have attempted several iptables rules, including:
>> iptables -v -t nat -A PREROUTING --in-interface eth1 --dport 80 -d
>> www.website.com -j DNAT --to 149.10.10.25
> 
> When you hit enter to commit this rule the iptables command resolves
> www.website.com to an ip address, and then hands the request to add a
> rule to netfilter.  The in-kernel rule will not change when
> website.com's IP changes, which may happen at any time.  If clients
> get a different IP for website.com (say they have multiple IPs), their
> access will not be intercepted by the iptables rule.

Conversely, access to any other site hosted at the same IP address will
be intercepted.

> iptables does not filter on domain names.

Nor web site (HTTP Host:) names. Bottom line.
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