Kelsey Cummings wrote:
> On Thu, May 26, 2005 at 01:23:56PM -0400, James Ebright wrote:
>>> Now, if 25 inbound was shut down...
>>
>> Why would an ISP shutdown port 25 inbound?...
>
> You must block port 25 in both directions to prevent 'triangular
> routing attacks' from working.
What is a triangular routing attack?
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