Re: [fw-wiz] MS Entourage (on OS X) sends information about internal network
From: Vladimir Parkhaev (vladimir_at_arobas.net)
To: email@example.com Date: Tue, 1 Jun 2004 19:13:18 -0400
Quoting John Adams (firstname.lastname@example.org):
> I don't know of too many firewalls that block outbound EHLO data -- does
> anyone know of an FW that can block this type of leak?
It is not for FW to block. Even if you mask EHLO (PIX probably does that)
chances are your internal addresses will leak in headers anyway.
Upgrade your MTA to postfix or qmail....
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