At 02:51 PM 9/17/96 -0400, Dick St.Peters wrote:
Logging denies will fill up your log anyway. Packets arriving for a dialup user after he/she hangs up fall through to the default route back out of the box. They are then _outbound_ packets with source address off the network and destination address on the network.
That depends how your network is setup. Ours would have the route going to Null0, so it wouldn't be shot back out via the default route. This hides any internal instability from being announced to the outside world except in /extreme/ cases. (Like we fall completely off the net). Why would you want the packet transiting back and forth across your T-1 until the TTL expires anyway? Much better to black hole the sucker. Justin Newton Internet Architect Erol's Internet Services
Logging denies will fill up your log anyway.
That depends how your network is setup. Ours would have the route going to Null0, so it wouldn't be shot back out via the default route. This hides any internal instability from being announced to the outside world except in /extreme/ cases. (Like we fall completely off the net). Why would you want the packet transiting back and forth across your T-1 until the TTL expires anyway? Much better to black hole the sucker.
The context was the Livingston boxes. To the best of my knowledge they don't have any analog of Null0 routing, although I've never actually used an IRX, just Livingston's Portmaster CS's. That said, I don't see a lot of difference between using a Null0 route and filtering against outbound destinations in your own address space as ways to black hole the suckers. At least I _know_ filtering can't be propagated to other routers. -- Dick St.Peters, Gatekeeper, Pearly Gateway, Ballston Spa, NY stpeters@NetHeaven.com Owner, NetHeaven 518-885-1295/800-910-6671 Albany/Saratoga/Glens Falls/North Creek/Lake Placid/Blue Mountain Lake First Internet service based in the 518 area code
participants (2)
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Dick St.Peters -
Justin W. Newton