[nsp] OSPF x firewall

Oliver Boehmer (oboehmer) oboehmer at cisco.com
Fri Dec 19 09:07:38 EST 2003


> I have a area 0 with 2 routers running OSPF. Now , i need put a
> firewall in the midle. is it possible maintain this structure without
> change nothing and without need enable OSPF in the firewall ? Does
> Someome know  a tip or a trick ? The subnet will be different.   

Unless you'll do something really dirty, it won't work, so I'd rather
change the routing design. The "still somehwat ok" approaches like NBMA
to overcome the multicast hello's will fail as the neighbors don't
belong to a common subnet..

	oli



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