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Date:      Tue, 28 Dec 2004 19:39:56 -0500
From:      Zijian Zhou <salsayarroz@gmail.com>
To:        freebsd-questions@freebsd.org
Subject:   problems with ipfw2 divert
Message-ID:  <883bd410041228163927bb46c9@mail.gmail.com>

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Hi:

I am trying to set up a freebsd machine as a bridge to implement a
sort of firewall at the bridging layer.

I am running:  FreeBSD 4.11-PRERELEASE i386

I have a divert socket bound to the port 8668 for outgoing traffic and
I have another divert socket bound to the port 8669 for incoming
traffic. I am using ipfw2 for diverting traffic.

has anybody experienced this problem; only one side of the traffic
gets diverted and the other side is never touched? if so, has anyone
fixed this problems?

here is my simple ipfw2 rule set:

rp6# ipfw show
00100   8458   2774224 divert 8668 udp from any 68 to any dst-port 67 recv dc0
00101      0         0 divert 8669 udp from any 67 to any dst-port 68 recv dc1
65535 502777 113629564 allow ip from any to any

these are some of my kernel variables for bridging.
rp6# sysctl -a |grep bridg
net.link.ether.bridge_cfg: dc0,dc1
net.link.ether.bridge: 1
net.link.ether.bridge_ipfw: 1
net.link.ether.bridge_ipf: 0
net.link.ether.bridge_ipfw_drop: 0
net.link.ether.bridge_ipfw_collisions: 0


thank you



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