Re: Defeating Firewalls: Sneaking Into Office Computers From Home

From: Leythos (void_at_nowhere.lan)
Date: 08/14/05 

Date: Sun, 14 Aug 2005 14:27:15 GMT

In article <87zmrkn93q.fld@barrow.com>, floyd@apaflo.com says...
> Leythos <void@nowhere.lan> wrote:
> >In article <87hddtnx2r.fld@barrow.com>, floyd@apaflo.com says...
> >>
> >> But there simply is no such thing as a "residential address
> >> block" that can universally be blocked. Even attempting to do
> >> so based on local patters is a very poor idea.
> >
> >Wrong, there are simple lists available and are often used in RBL's - we
> >use the residential block list to block inbound SMTP to our servers as
> >we don't have any reason for a residential customer to send us email
> >from their workstation, the ISP's SMTP servers are almost always not
> >included in the residential network lookup lists.
>
> It's a very poor idea.

What's poor about it - almost every ISP has a rule that prohibits
residential users from running their own email servers, and since every
residential user can push through their ISP's mail server even if they
use their own internal email server, there is no reason to allow
residential addresses to send SMTP. The real issue is the sooooo many
residential users machines are compromised with viruses that have their
own SMTP engines that anyone not blocking SMTP from residential
addresses is a fool. 

-- 
spam999free@rrohio.com
remove 999 in order to email me

Relevant Pages