nanog mailing list archives
Re: ISPs are asked to block yet another port
From: Jack Bates <jbates () brightok net>
Date: Mon, 23 Jun 2003 15:05:47 -0500
Christopher L. Morrow wrote:
There is another fix for it. If neither provider allowed spoofing, then the individual couldn't send spoofed packets out one way and allow the syn/ack back via the other. Of course, there are better reasons for spoof protection ingress/egress than a little port 25 traffic.This is what our, atleast, abuse team calls 'fantasy mail'. There is a fix for it, port 25 in and out filtering for radius customers. The 'problem' as I understand it, is that the change would be a contract change so it has to wait for expiration of said contract to be enforced... :( Its a sucky world sometimes. Perhaps Paul complained to ATT/<other-unnamed-provider> with logs and such? :)
-Jack
Current thread:
- ISPs are asked to block yet another port Sean Donelan (Jun 22)
- Re: ISPs are asked to block yet another port Tony Rall (Jun 22)
- Re: ISPs are asked to block yet another port Jeff Kell (Jun 23)
- Re: ISPs are asked to block yet another port Peter E. Fry (Jun 23)
- Re: ISPs are asked to block yet another port Christopher L. Morrow (Jun 23)
- Re: ISPs are asked to block yet another port Jared Mauch (Jun 23)
- Re: ISPs are asked to block yet another port Paul Vixie (Jun 23)
- Re: ISPs are asked to block yet another port jlewis (Jun 23)
- Re: ISPs are asked to block yet another port Christopher L. Morrow (Jun 23)
- Re: ISPs are asked to block yet another port Jack Bates (Jun 23)
- Re: ISPs are asked to block yet another port Paul Vixie (Jun 23)
- Re: ISPs are asked to block yet another port Paul Vixie (Jun 23)
- Re: ISPs are asked to block yet another port Christopher L. Morrow (Jun 23)
- Re: ISPs are asked to block yet another port Christopher L. Morrow (Jun 23)
- <Possible follow-ups>
- RE: ISPs are asked to block yet another port Christopher L. Morrow (Jun 23)
- Re: ISPs are asked to block yet another port Paul Vixie (Jun 24)
- Re: ISPs are asked to block yet another port Christopher L. Morrow (Jun 24)
- Re: ISPs are asked to block yet another port Paul Vixie (Jun 24)