Gleb Smirnoff wrote: > > Dear networkers, > > I finally managed to pronounce my idea, although I'm afraid > of a bikeshed it is going to be burried under. > > When managing a complex router with many interfaces the output > of `ipfw show` (or ipf/pf analog) is getting long and difficult to > understand. It is also important that many packets are checked > against the rules that can never be applied to them, wasting CPU > cycles. > > A simple example can be local network router with many inner interfaces > and with one interface to internet. Actually filtering is desired > only in external interface, and there is no need for local traffic > to enter packet fitlering routines, e.g. ipfw_chk().
Then you argument about long ipfw show doesn't hold... ;) > I'd like to implement per-interface pfil hooks, like in Cisco > world. Each interface may have 'in' list of rules, 'out' list > of rules. Current global ip_{input,output}, filters may coexist > with per-interface ones, but can be turned off. Different worlds. I wonder why everything has to "like Cisco". It's not always the most clever way they solve a given problem. > Our PFIL interface is quite ready for this, and this is very nice. I don't see any changes to pfil for this. Pfil already passes the interface in the argument call. This is something for the packet filters (ipfw/pf/ipf) than the pfil API? > I'll start with creating/editing alternative chains in ipfw. Then > we will need to add possibility to register per-interface hooks > in pfil, and add possibility to pass one more optional argument > from pfil to the filter itself. Can you provide example how you think the syntax should be? > I'm glad to see any constructive comments on plan. You have to be careful not to collide with the "in|out|via" inside the rules. -- Andre _______________________________________________ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "[EMAIL PROTECTED]"