防火墙放在哪里? [英] Where to put the firewall?

问题描述

如果我想放置防火墙以过滤出包含某些单词或短语的邮件，那么我需要将其放置在域网关或域邮件服务器上吗?
我仍然对这种差异感到困惑.请澄清.

If I want to put a firewall to filter out messages containing certain words or phrases, then would I need to put that at the domain gateway or at the domain mail server?
I am still confused at the diffrence. Please clarify.

推荐答案

这是直接来自计算机科学教科书的问题.假设您要建立防火墙以过滤掉包含certian短语或术语的电子邮件.将此防火墙放在您域的网关或域的邮件服务器上.请解释您的答案.

This is the question from a computer science text book directly. Suppose you want to establish a firewall to filter out email messages containing a certian phrase or term. Would this firewall be placed at your domain''s gatewat or at the domain''s mail server. Please explain your answer.

polska03写道:

polska03 wrote:

我仍然很困惑

我会说你很困惑.防火墙不用于根据内容过滤邮件.

http://en.wikipedia.org/wiki/Firewall_(网络) [ http://en.wikipedia.org/wiki/Spam_filter [

I''ll say you''re confused. A firewall is not used to filter messages based on content.

http://en.wikipedia.org/wiki/Firewall_(networking)[^]

What you are describing is an email, or spam, filter

http://en.wikipedia.org/wiki/Spam_filter[^]

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