Bugtraq: Re: The "Mac DoS Attack," a Scheme for Blocking Internet Connections

[alan () LXORGUK UKUU ORG UK (Alan Cox)]

> The Internet Service Providers (ISPs) must take action to drop long ICMP
> packets in the backbone networks (any packet longer than 1499 bytes, at
> least).
This will break existing "good behaviour" legal systems and potentially
disrupt MTU discovery proceedure. It isnt a feasible option without a lot
of additional checks to the packet type etc, at which point with many routers
the firewall rules involved turn into a performance based DoS on the core
routers.

Alan