MD5 for TCP/BGP Sessions

Thu Mar 31 00:24:43 UTC 2005

Christopher L. Morrow wrote:
> 
> provided your gear supports it an acl (this is one reason layered acls
> would be nice on routers) per peer with:
> permit /30 eq 179 /30
> permit /30 /30 eq 179
> deny all-network-gear-ip-space (some folks call it backbone ip space, Paul
> Quinn at cisco says: "Infrastructure ip space")
> 
> no more traffic to the peer except BGP from the peer /30. No more ping, no
> more traceroute of interface... (downsides perhaps?) and the 'customer'
> can still DoS himself :( (or his compromised machine can DoS him)
> 

or forge the source ip on the neighbors /30 or /31 (why aren't you using 
/31s anyway) and call it done.

/vijay