nanog mailing list archives
RE: Anti-spam System Idea
From: "Timothy R. McKee" <tim () baseworx net>
Date: Mon, 16 Feb 2004 16:19:03 -0500
Personally I don't see where ingress filters that only allow registered SMTP servers to initiate TCP connections on port 25 is irresponsible. Any user sophisticated enough to legitimately require a running SMTP server should also have the sophistication to create a dns entry and register it with his upstream in whatever manner is required. There will never be a painless or easy solution to this problem, only a choice where we select the lesser of all evils. Tim -----Original Message----- From: Petri Helenius [mailto:pete () he iki fi] Sent: Monday, February 16, 2004 16:06 To: Timothy R. McKee Cc: 'J Bacher'; nanog () merit edu Subject: Re: Anti-spam System Idea Timothy R. McKee wrote:
There will *never* be a concerted action by all service providers to filter ingress/egress on abused ports unless there is a legal requirement to do so. Think 'level playing field'...
HavenĀ“t it been stated enough times previously that blindly blocking ports is irresponsible? There are ways to similar, if not more accurate results without resorting to shooting everything that moves. Pete
Current thread:
- Identifying IP address types, (continued)
- Identifying IP address types Sean Donelan (Feb 15)
- Re: Anti-spam System Idea Jon R. Kibler (Feb 15)
- Re: Anti-spam System Idea Sean Donelan (Feb 15)
- Re: Anti-spam System Idea Jon R. Kibler (Feb 15)
- Re: Anti-spam System Idea Christopher L. Morrow (Feb 15)
- Re: Anti-spam System Idea Jon R. Kibler (Feb 16)
- Re: Anti-spam System Idea Christopher L. Morrow (Feb 16)
- Re: Anti-spam System Idea J Bacher (Feb 16)
- RE: Anti-spam System Idea Timothy R. McKee (Feb 16)
- Re: Anti-spam System Idea Petri Helenius (Feb 16)
- RE: Anti-spam System Idea Timothy R. McKee (Feb 16)
- RE: Anti-spam System Idea Scott McGrath (Feb 17)
- Clueless service restrictions (was RE: Anti-spam System Idea) Tony Hain (Feb 17)
- Re: Clueless service restrictions (was RE: Anti-spam System Idea) Steven M. Bellovin (Feb 17)
- Re: Clueless service restrictions (was RE: Anti-spam System Idea) Jun-ichiro itojun Hagino (Feb 17)
- RE: Clueless service restrictions (was RE: Anti-spam System Idea) Don Gould (Feb 17)
- Re: Clueless service restrictions (was RE: Anti-spam System Idea) Valdis . Kletnieks (Feb 18)
- Re: Clueless service restrictions (was RE: Anti-spam System Idea) Laurence F. Sheldon, Jr. (Feb 17)
- Re: Clueless service restrictions (was RE: Anti-spam System Idea) Randy Bush (Feb 17)
- Re: Clueless service restrictions (was RE: Anti-spam System Idea) Robert E. Seastrom (Feb 17)
- Re: Clueless service restrictions (was RE: Anti-spam System Idea) Nathan J. Mehl (Feb 17)