为什么本地主机连接被防火墙阻止? [英] Why are localhost connections blocked by the firewall?

问题描述

当我在本地主机上的端口上侦听时，Windows将弹出一个对话框，用户必须在其中将我的程序添加到防火墙例外列表中.这很烦人，并且需要用户可能没有的管理员权限.

When I listen on a port on localhost, Windows will popup a dialogue in which the user must add my program to the list of firewall exceptions. This is annoying, and requires administrator-rights, which the user may not have.

为什么Windows会对回送连接(127.0.0.1)进行此操作，并且有一些技巧可以防止这种情况发生?

Why does Windows do this for loopback connections (127.0.0.1) and is there some trick to prevent this?

推荐答案

答案是指定:

IPEndPoint localEndPoint = new IPEndPoint(IPAddress.Loopback, Port);

代替

IPEndPoint localEndPoint = new IPEndPoint(IPAddress.Any, Port);

用于侦听套接字.乍一看，这似乎可以防止任何防火墙警告，并且不需要向防火墙添加任何规则.但是我必须做一些更广泛的测试，以确保它适用于所有Windows配置.

for the listening socket. At first sight this seems to prevent any firewall warnings and doesn't require any rules to be added to the firewall. But I have to do some more extensive testing to be sure this works on all Windows configurations.

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