Re: Dynamic redirection?

[Glen Becker <solar04@comcast.net>]

Craig, thanks!  That works great for now; "simple is good".  If time
permits later I would like to experiment with your and Jeroen's
suggestion of marking.

-Glen

On Thu, 2004-02-26 at 03:32, Philip Craig wrote:
> Use these rules:
> 
> -t nat -A PREROUTING -s 192.168.2.128 -j ACCEPT
> -t nat -A PREROUTING -d 192.168.2.128 -j ACCEPT
> -t nat -A PREROUTING -i eth1 -p tcp --dport 80 -j DNAT --to 192.168.2.1
> -P FORWARD DROP
> -A FORWARD -p udp --dport 53 -j ACCEPT
> -A FORWARD -p udp --sport 53 -j ACCEPT
> -A FORWARD -s 192.168.2.128 -p ALL -j ACCEPT
> -A FORWARD -d 192.168.2.128 -p ALL -j ACCEPT
> 
> If you don't like duplicating the rules like that, then you could
> set marks in mangle PREROUTING and base both the nat and filter rules
> off the mark.  Or you could patch your kernel to use ippool or ipset,
> then you wouldn't need to dynamically add rules at all, you just
> have one rule each in nat and filter referring to the pool/set.