如何在公司局域网内封禁QQ和MSN？

msn服务器地址 65.54.225.254 65.54.226.254 65.54.228.244 65.54.228.253 65.54.229.248 65.54.229.253 65.54.225.241 65.54.226.247 qq服务器地址 202.104.128.233 202.104.129.242 202.104.129.251 202.104.129.252 202.104.129.253 202.104.129.254 202.104.193.18 202.104.193.30 202.96.140.119 202.96.140.12 202.96.140.18 202.96.140.8 202.96.170.163 202.96.170.164 202.96.170.166 210.22.12.126 211.248.99.252 218.17.209.23 218.17.209.42 218.17.217.103 218.17.217.66 218.18.95.153 218.18.95.165 218.18.95.171 218.18.95.209 218.18.95.220 218.18.95.221 218.18.95.236 218.66.59.233 218.85.138.74 219.133.38.133 219.133.38.135 219.133.38.136 219.133.38.230 219.133.38.43 219.133.38.5 219.133.38.66 219.133.40.113 219.133.40.114 219.133.40.115 219.133.40.118 219.133.40.119 219.133.40.15 219.133.40.173 219.133.40.201 219.133.40.216 219.133.40.73 219.133.40.89 219.133.40.90 219.133.40.91 219.133.40.95 61.141.194.200 61.141.194.203 61.141.194.207 61.141.194.223 61.141.194.224 61.141.194.227 61.144.238.145 61.144.238.146 61.144.238.150 61.144.238.156 61.172.249.135 QQ服务器分为三类： 1、UDP 8000端口类13个：速度最快，服务器最多。 QQ上线会向这11个服务器发送UDP数据包，选择回复速度最快的一个作为连接服务器。 这6个服务器名字均以SZ开头，域后缀是tencent.com，域名与IP对应为 sz sz2 : 61.144.238.145 61.144.238.146 61.144.238.156 sz3 sz4 sz6 sz7 : 202.104.129.251 202.104.129.254 202.104.129.252 202.104.129.253 sz5 : 61.141.194.203 202.96.170.166 218.18.95.221 219.133.45.15 61.141.194.224 202.96.170.164 2、TCP HTTP连接服务器4个，使用HTTP 80 和443端口连接 这4个服务器名字均以tcpconn开头，域后缀是tencent.com，域名与IP对应为 tcpconn tcpconn3 218.17.209.23 tcpconn2 tcpconn4 218.18.95.153 61.141.194.227 218.18.95.171 3、会员VIP登陆服务器，使用HTTP 443安全连接 服务器IP 218.17.209.42 知道这些服务器地址，全封锁了就OK了，谁也不能上QQ了，无论何种方式， 如果可以上了，那么就是增加了新的服务器！