On Sat, 9 Jun 2001 dgillett@deepforest.org wrote: > If A and B are on two different ISPs that don't currently have a > common peering point, they must traverse some other backbone ISP, and > this choice may be made differently depending on the origin ISP of > the packet.... Thanks for info David. Fascinating, I didn't realize that. How do 2 ISPs become "peers"? They are on same backbone? I heard on CNN this morning that during height of CA power crisis a group of anti-US Chinese hackers broke into components of the CA state power grid control network and although they didn't reach critical systems an audit showed that with more persistence they could have exploited vulnerabilities and gained access to critical areas of the system. This is disturbing. I was more disturbed by the reported saying somethinb to the effect "The security issues have been resolved and the system is now totally secure." Why is such a critical system as power grid even PUBLICLY accessible. Shouldn't they be on their own closed network? I hope the nuclear power plants and ballistic missile control networks are more secure. Yikes! SDG, Zach uram@cmu.edu "Blessed are those who have not seen and yet have faith." - John 20:29 - [To unsubscribe, send mail to majordomo@lists.gnac.net with "unsubscribe firewalls" in the body of the message.]