[EMAIL PROTECTED] wrote: > I believe it was actually ComCast, a reseller of @home cable > service. I believe they block GRE and perhaps also ports used by > IKE; this has nothing to do with NAT.
I believe that they used to block GRE (they clearly had a policy of disallowing 'home' users from using VPNs and considered this a part of their 'business/commercial' users higher end service -- you can find this documented on the web in several places). And when I first obtained Comcast@HOME service (early sprint 2001) enforcement of this policy appeared to be in effect (PPTP did not work connecting from home). However, I noticed this summer that Comcast@HOME (at least in my service area) now appeared to be allowing the GRE protocol (e.g. using PPTP now works when I connect from home). Of immediate concern to me this week are articles that imply that the bankrupt Excite@Home system may pull the plug on 4 million cable high speed Internet users on Friday, stranding them. See: http://www.siliconvalley.com/docs/news/tech/035946.htm - H. Morrow Long University Information Security Officer Yale University, ITS, Dir. InfoSec Office
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