[51992] in North American Network Operators' Group
Re: Drive-by spam hits wireless LANs
daemon@ATHENA.MIT.EDU (Steven M. Bellovin)
Wed Sep 11 14:20:51 2002
From: "Steven M. Bellovin" <smb@research.att.com>
To: nanog@merit.edu
Date: Wed, 11 Sep 2002 14:19:20 -0400
Errors-To: owner-nanog-outgoing@merit.edu
One thing I've noticed that may be an anti-spam measure: STN, the ISP
that servers Marriott hotels (among others) seems to have a
"transparent" proxy intercepting outbound traffic to port 25. Not sure
why they'd do that except to deter check-in spammers. They *don't* do
anything with traffic to port 80, as best I can tell.
--Steve Bellovin, http://www.research.att.com/~smb (me)
http://www.wilyhacker.com ("Firewalls" book)
