Re: ECN: Clearing the air (fwd)

George
2001-01-29T19:27:51Z

On Mon, 29 Jan 2001, Albert D. Cahalan wrote:

>The author is expressing his wish for an ideal world. Note that he
>also accepts reality. He accepts that PMTU black holes won't go
>away, even though we might like them to do so.
>
>Hell, I think I'm behind one. ICMP is/was blocked to/from/within
>the entire university. This was to stop ping flood attacks. :-)

So you get a UDP flood instead.

Congratulations on breaking something important (PMTU, "Port unreachable",
etc.) for a false sense of security.

Did you buy a non-upgraded Cisco PIX just to block ECN as well?

-George Greer