Bridge and manipulating frames

E

espric

Hello all,

I'm a newbie on FreeBSD so my knowledge is very limitated. My problem is the following:

I have a FreeBSD PC with two ethernet ports.

I wish to use this machine in order to realize:

- a transparent bridged communication between port #1 and port #2
- a selective field modification of some bridged frames coming from port#1 and reinjection to port #2 (packet error injection)

I found something about bridge, ipfw and divert but reading forums seems that diversion with bridge doesn't work.

Any suggestion?
Thank you for your help!
 
Thank you. I quickly managed the bridged communication between #1 and #2 reading the manual.
Any suggestion for the modification and reinjection of some bridged frames?
I'm able to divert some frame from the bridge (with ipfw add divert portxxxx ip from x.y.z.j to any) but the reinjection fails.

thank for your help
 
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