nanog mailing list archives
Re: ISPs are asked to block yet another port
From: Paul Vixie <paul () vix com>
Date: Mon, 23 Jun 2003 20:20:22 +0000
Its a sucky world sometimes. Perhaps Paul complained to ATT/<other-unnamed-provider> with logs and such? :)
oh yes. i tried *several* ways to get their attention. however, this kind of activity is so common these days that a noc literally has no choice but to focus their efforts on less common and more damaging things than relayprobing. so i was not shocked that they did not answer me.
so if you're going to block tcp/25 SYNs on outbound, please make sure you block SYN/ACK's on input too, or else you just give the spammers a little more work to do instead of a lot more work to do.Yup, this is in the works also... and yes, someone realized quickly enough that the one-way filtering was dumb. oh well. live and learn!
that's good news, thanks for sharing it. any schedule for a fix :-) ??
Current thread:
- Re: ISPs are asked to block yet another port, (continued)
- 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)
- 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)