Eric Anderson wrote:
What is the easiest way to play with modifying data in-transit within an
ethernet bridge?
For instance, say I have something like this:
[BOX 1] <----> [ BOX 2 ] <----> [ BOX 3 ]
And BOX 2 is a FreeBSD box with bridging enabled between two ethernet
interfaces, how can I parse/modify the ethernet frames as they pass
through?
a netgraph bridge can do that (you can hook two ng_bridges together
and capture all the packets that flow between them...
There are also some patches that allow divert sockets to be
attached to a bridging ipfw firewall.
Eric
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