On Mon, 24 May 2004, Michael Hertrick wrote:

> http://news.com.com/Cisco+to+patent+security+fix/2100-1002_3-5216494.html?tag=cd.lede
>
> Apparently Cisco is trying to patent a RST-ACK mechanism for TCP.  Their
> standard "Cisco will not charge royalties for implementing the patent"
> and "The company reserves the right to use its patent defensively if
> another party asserts its patents against Cisco." will apply.
>
> I send this information along not as if NetBSD would ever need to
> implement something like this, but just in case anyone's been
> considering it.....

The patent statement is here:

http://www.ietf.org/ietf/IPR/cisco-ipr-draft-ietf-tcpm-tcpsecure.txt

the only thing is if you come back and sue Cisco for IPR infringment
then cisco can use this patent against you. Btw, NetBSD implemented this
draft (the fix that is) as far as i know.
Bye,

Mipam.