Date: Wed, 25 Jul 2007 09:19:02 +0545 From: Samit <janasamit@wlink.com.np> To: Chuck Swiger <cswiger@mac.com> Cc: freebsd-isp@freebsd.org Subject: Re: changing ttl size of forwarding packet Message-ID: <46A6C4AA.1010301@wlink.com.np> In-Reply-To: <B3283DBE-EB4C-4281-8658-8F81E5C94775@mac.com> References: <46A63AF2.40405@wlink.com.np> <B3283DBE-EB4C-4281-8658-8F81E5C94775@mac.com>
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Chuck Swiger wrote: > On Jul 24, 2007, at 10:46 AM, Samit wrote: >> iptables can easily do it via mangle table. Is there any way using ipfw2 >> to change the ttl size of the forwarding packets? > > The size of the TTL field is fixed by the IP protocol to 1 byte; perhaps > you are looking for the IPFW transparent firewall option, which prevents > it from decrementing the TTL in order to make a "hidden" firewall...? > The other way round,want to lower the TTL as much as I want, as soon as it passes my firewall. Samit
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