nanog mailing list archives
Re: Interesting new spam technique - getting a lot more popular.
From: "Patrick W. Gilmore" <patrick () ianai net>
Date: Wed, 14 Jun 2006 13:57:13 -0400
On Jun 14, 2006, at 1:53 PM, Church, Chuck wrote:
Since this technique requires a IPinIP or GRE tunnel, wouldn't blocking these two protocols to/from the hosts be sufficient? Assuming of coursethe customer's host isn't using that normally.
Unfortunately, that probably won't work for very long, if at all.First, it's kinda difficult to guarantee your customers will not use a protocol.
Second, unless you have deep packet inspection, what is to stop the spammer from using, say, port 80 for their tunnel?
Third, what's to stop them from using SSH tunnels? Etc., etc., etc.... -- TTFN, patrick
Current thread:
- Re: Interesting new spam technique - getting a lot more popular., (continued)
- Re: Interesting new spam technique - getting a lot more popular. Richard Z (Jun 15)
- Re: Interesting new spam technique - getting a lot more popular. Chris Edwards (Jun 14)
- Re: Interesting new spam technique - getting a lot more popular. Florian Weimer (Jun 14)
- RE: Interesting new spam technique - getting a lot more popular. John van Oppen (Jun 13)
- Re: Interesting new spam technique - getting a lot more popular. Payam Chychi (Jun 13)
- RE: Interesting new spam technique - getting a lot more popular. Edward B. DREGER (Jun 13)
- RE: Interesting new spam technique - getting a lot more popular. John van Oppen (Jun 14)
- Re: Interesting new spam technique - getting a lot more popular. Warren Kumari (Jun 14)
- Re: Interesting new spam technique - getting a lot more popular. Mark Smith (Jun 15)
- Re: Interesting new spam technique - getting a lot more popular. Warren Kumari (Jun 14)
- RE: Interesting new spam technique - getting a lot more popular. Church, Chuck (Jun 14)
- Re: Interesting new spam technique - getting a lot more popular. Patrick W. Gilmore (Jun 14)
- RE: Interesting new spam technique - getting a lot more popular. Christopher L. Morrow (Jun 14)
- RE: Interesting new spam technique - getting a lot more popular. Peter Phaal (Jun 15)