Home page logo
/

nanog logo nanog mailing list archives

Re: ISPs are asked to block yet another port
From: "Christopher L. Morrow" <chris () UU NET>
Date: Mon, 23 Jun 2003 20:49:26 +0000 (GMT)



On Mon, 23 Jun 2003, Paul Vixie wrote:


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, for <unnamed-provider-X> you have a Abuse Ticket number? Perhaps you
could send the one you think might apply to me off-list? :)


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 :-) ??


I do not know what the timeframe is :( Sorry.


  By Date           By Thread  

Current thread:
[ Nmap | Sec Tools | Mailing Lists | Site News | About/Contact | Advertising | Privacy ]