[57862] in North American Network Operators' Group
Re: Open relays and open proxies
daemon@ATHENA.MIT.EDU (John Payne)
Fri Apr 25 10:42:52 2003
Date: Fri, 25 Apr 2003 10:36:23 -0400
From: John Payne <john@sackheads.org>
To: Daniel Concepcion <dani@danielcp.net>, NANOG <nanog@merit.edu>
In-Reply-To: <200304251631.34016.dani@danielcp.net>
Errors-To: owner-nanog-outgoing@merit.edu
--On Friday, April 25, 2003 4:31 PM +0200 Daniel Concepcion
<dani@danielcp.net> wrote:
>> > I think that the end of the spam and open relays will be when the smtp
>> > servers talk only with servers with trust.
>>
>> Amazingly, even though I am posting in this thread... it is *not* about
>> spam.
>
> Uops, sorry for the mistake ;) But for me the spam is really a big
> problem when use open proxys or relays or misconfigured smtp servers.
>
>> Don't be fooled by the mention of open relays. Open proxies are abused
>> for many purposes, of which spam is a minor one. I've seen open proxies
>> in recent DoS source addresses for example.
>
> The big problem in dDoS are the smurf, virus and trojans. Generally every
> machine infected have an open proxy. But the open proxy itself isn't
> dangerous. They are only use as intermediate hop for attack machines or
> control other trojans.
Sounds like you're arguing for widespread IP level blocking of open proxies
then :)
