North American Network Operators Group
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Re: ISP port blocking practice
- From: Ricky Beam
- Date: Thu Oct 22 17:37:08 2009
On Thu, 22 Oct 2009 13:22:17 -0400, Zhiyun Qian <zhiyunq@umich.edu> wrote:
1). For any outgoing traffic, if the destination port is 25, then drop
the packets.
2). For any incoming traffic, if the source port is 25, then drop the
packets.
Inspecting outgoing traffic is generally easier to do as there's less of
it. (in a consumer context, which is the only place such filtering makes
any sense.)
--Ricky
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