怎么封掉指定的端口
其实用防火墙禁用简单！因为QQ用的是UDP协议,默许通信端口是4000,所以只要在网关上拟定过滤规则,把源端口是4000的UDP数据包过滤掉就可以实现对QQ的封杀了(In fact, it is easy to disable with a firewall! Because QQ uses the UDP protocol, the default communication port is 4000, so as long as the filtering rules are drawn up on the gateway to filter out the UDP packets whose source port is 4000, the blocking of QQ can be realized.)
页:
[1]