Re: [Asrg] article: port 25 blocking

[mathew <meta at pobox.com>]

Walter Dnes wrote:

> On Thu, Apr 14, 2005 at 11:01:03PM -0500, mathew wrote
>  
>
> > Basically, it's security through obscurity. And in this case, the
> > obscurity will only last until the first port scan. There are only
> > 65535 ports in total; there are plenty of tools out there which will
> > scan them all in a couple of minutes; adding code to go back to each
> > open port and check for an SMTP server is a trivial addition.
> >    
>
>  Rather than accessing random open ports, the road warriors' machines
> should be using ssh-tunneling or VPN or whatever.

In which case there's no need for the "random ports" proposal in the 
first place.


mathew

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