nanog mailing list archives
Re: anti-spam vs network abuse
From: David Schwartz <davids () webmaster com>
Date: Thu, 27 Feb 2003 21:57:44 -0800
On Thu, 27 Feb 2003 22:36:37 -0500 (EST), jlewis () lewis org wrote:
This sort of activity is becoming more common / mainstream, so people ought to just get used to it. Road Runner is doing the same thing (according to http://sec.rr.com/probing.htm) which is pretty ironic given how their security department has gotten along with (or not) various DNSBLs in the past.
It has always been my opinion that if somebody connects to you, they are implicitly granting you the right to connect back to them on well-known ports. I have discussed this opinion with several dozen people and have yet to find one who disagrees. (Though I'm sure they're probably out there.) I've dealt with any number of abuse complaints, many from governmental and quasi-governmental group. They've all accepted my cut/pasted explanation and we've been whitelisted by several such organizations. I often use the following as the 'meat' paragraph of my reply: "In accord with our terms of service, when someone makes a connection to one of our machines, we make connections back to them to ensure they're not connecting through an open proxy. These connections are to each of the ports on which such proxies commonly run and some ports may require more than one connection to test multiple protocols. We never do such a probe except as a response to a connection made to us." -- David Schwartz <davids () webmaster com>
Current thread:
- Re: RIPE Down or DOSed ?, (continued)
- Re: RIPE Down or DOSed ? hostmaster (Feb 27)
- Re: RIPE Down or DOSed ? hostmaster (Feb 27)
- Re: RIPE Down or DOSed ? kai (Feb 27)
- Re: RIPE Down or DOSed ? Will Yardley (Feb 27)
- Re: RIPE Down or DOSed ? Dave Israel (Feb 27)
- Re: RIPE Down or DOSed ? Kai Schlichting (Feb 27)
- Re: RIPE Down or DOSed ? jlewis (Feb 27)
- Re: RIPE Down or DOSed ? Kai Schlichting (Feb 28)
- anti-spam vs network abuse jlewis (Feb 27)
- Re: anti-spam vs network abuse Jack Bates (Feb 27)
- Re: anti-spam vs network abuse David Schwartz (Feb 27)
- Re: anti-spam vs network abuse Roy (Feb 28)
- Re: anti-spam vs network abuse Paul Vixie (Feb 28)
- Re: anti-spam vs network abuse Daniel Senie (Feb 28)
- Re: anti-spam vs network abuse Gary E. Miller (Feb 28)
- Re: anti-spam vs network abuse Andy Dills (Feb 28)
- Re: anti-spam vs network abuse Dan Hollis (Feb 28)
- Re: anti-spam vs network abuse Jack Bates (Feb 28)
- Re: anti-spam vs network abuse David G. Andersen (Feb 28)
- Re: anti-spam vs network abuse Richard Irving (Feb 28)
- Re: RIPE Down or DOSed ? hostmaster (Feb 27)
- Re: anti-spam vs network abuse Charlie Clemmer (Feb 28)