Date: Tue, 09 Sep 2003 17:42:12 -0700 From: Michael Sierchio <kudzu@tenebras.com> To: Bruce M Simpson <bms@spc.org> Cc: freebsd-security@freebsd.org Subject: Re: is one of my hosts a scanner? Message-ID: <3F5E7364.7010605@tenebras.com> In-Reply-To: <20030909215930.GS1417@spc.org> References: <69749FD8-E303-11D7-AF9F-000393A335A2@mac.com> <3F5E4834.4060409@tenebras.com> <20030909215930.GS1417@spc.org>
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Bruce M Simpson wrote:
>>IANA *assigns* port numbers 0-1023, and *registers* port numbers 1024-49151.
>>
>> ... it's definitely a bug
>>to use a port registered to another service.
>
> Perhaps you should take it up with Cloudmark, as they maintain SpamNet
> commercially. They may have had good reasons, though, so don't be too
> quick to jump on them for doing it.
I have no intention of taking it up with Cloudmark, I'm giving up
training people for free.
> One reason I can think of is to be a bit more obfuscated about how the
> SpamNet operates, but given that it's a network for *reporting* spam whose
> components has deterministic behaviour, it doesn't really throw spammers
> off the scent, if they were to sit down and analyse the product.
Shall I speculate why you speculate? I speculate that they don't know what
IANA is. For starters.
--
"Well," Brahma said, "even after ten thousand explanations, a fool is no
wiser, but an intelligent man requires only two thousand five hundred."
- The Mahabharata
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