Date: Mon, 27 Jun 2005 16:06:35 +0200 From: cole@opteqint.net To: freebsd-hackers@freebsd.org Subject: Packet interception / Mangling Message-ID: <20050627160635.9kkhi57rk88w848k@mail.opteqint.net>
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Hi I wanted to know if there are any libraries similar to pcap to intercept packets/mangle packets. What im trying to do specifically is like link compression, and I would then need to check if the packet is then compressed and decompress, and so forth and so on. I would like to avoid having to use a ipfw divert to a port, and specifically check all traffic to the box using a library function or some kind of hook into the kernel. The FreeBSD version I will be using is 4.9 or 4.11, and would like to know if there are any such routines available, and whether it could be a userland daemon, or if i am going to need to write a kernel loadable module? If anyone has any ideas or suggestions, or knows anything about this, it would be a great help. Regards /Cole
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