[EMAIL PROTECTED] wrote:
Hi
I wanted to know if there are any libraries similar to pcap to intercept
packets/mangle packets.
how about pcap? :-)
There are also two other mechinisms..
"divert sockets" (man divert) which is used in conjuction with teh ipfw
packet fileter
and netgraph (man 4 netgraph, man ngctl, man ng_socket, man ng_ether)
which can do a lot of interesting thins.
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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