nanog mailing list archives
Re: ISP port blocking practice
From: Curtis Maurand <cmaurand () xyonet com>
Date: Fri, 03 Sep 2010 13:44:42 -0400
I use SSL only and even then, it requires authentication. --Curtis On 9/3/2010 1:00 PM, Owen DeLong wrote:
I have had it happen in some metro areas on sprint. I have experienced it in at least a dozen hotels over the last 12 months. I have run into it in various airports with free public wifi. I have run into the problem in several coffee shops. By far, the worst offenders are the most expensive hotels where the Internet access, damaged as it is generally goes for $25+ per day. I almost always end up getting free Internet as a result because I report the issue as a problem and their technical support usually can't spell tcp let alone understand what I mean when I say a port is blocked. Even worse is the ones that silently redirect your smtp (regardless of port) session to their MTA. Fortunately, my configuration is good enough that it just breaks in these cases, but I know many people who thought they were connecting to their own server via TLS only to later discover that their mail was relayed in clear text through several third party servers. (most mua's seem to have an unfortunate default to "ssl or tis if available" and keep right on sending even if tis negotiations are rejected.) Owen Sent from my iPad On Sep 4, 2010, at 12:08 AM, JC Dill<jcdill.lists () gmail com> wrote:
Current thread:
- Re: ISP port blocking practice, (continued)
- Re: ISP port blocking practice Patrick W. Gilmore (Sep 02)
- Re: ISP port blocking practice Jack Bates (Sep 02)
- Re: ISP port blocking practice Franck Martin (Sep 02)
- Re: ISP port blocking practice Owen DeLong (Sep 03)
- Re: ISP port blocking practice Patrick W. Gilmore (Sep 03)
- Re: ISP port blocking practice Jack Bates (Sep 03)
- Re: ISP port blocking practice JC Dill (Sep 03)
- Re: ISP port blocking practice Randy Bush (Sep 03)
- Re: ISP port blocking practice Nick Hilliard (Sep 03)
- Re: ISP port blocking practice Owen DeLong (Sep 03)
- Re: ISP port blocking practice Curtis Maurand (Sep 03)
- Re: ISP port blocking practice Dobbins, Roland (Sep 03)
- Re: ISP port blocking practice Kevin Oberman (Sep 04)
- Re: ISP port blocking practice Owen DeLong (Sep 03)
- Re: ISP port blocking practice Butch Evans (Sep 03)
- Re: ISP port blocking practice Owen DeLong (Sep 03)
- Re: ISP port blocking practice John Levine (Sep 03)
- Re: ISP port blocking practice Owen DeLong (Sep 03)
- Re: ISP port blocking practice John R. Levine (Sep 03)
- RE: ISP port blocking practice Paul Stewart (Sep 03)
- Re: ISP port blocking practice Doug Barton (Sep 03)