买台防火墙除了25和110 ,53其它都给它封了...
...需要受限的PC都放到网管系统的内网去,再用网管系统把tcp和udp的端口0~65536中除了25、110、53这些跟邮件收发有关的端口,其他的全都封禁
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如何更改电脑网路设定,以防止员工偷上网? |
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