how to block MSN, yahoo messenger and AIM on openbsd

peter333

Hi, every one,
I use openbsd 3.4 to setup a router and try to block MSN, yahoo messenger and AIM these chat program. but it doesn't work. I know msn uses port 1863, yahoo messenger uses port 5050,  aim uses port 5190. so, i tried to block out  these ports protocol tcp and udp in the pf.conf. but can't stop them.  any one can help me and give me an idea?

thank you very much

peter333

please, every one.

werix

try first block all
and open port when you need.

congli

將端口封了就OK。
MSN好象是1755.

劍心通明

現(xiàn)在這些及時(shí)聊天的是不是都跟qq那樣光靠封端口不行了

peter333

thanks for your reply. i tried to block these ports. but it doesn't work. if you block these ports, they will scan other ports and use them.
i can block man . i just block {tcp, udp} from any to  207.46.0.0/16  port {80, 1863}. but i can't block yahoo messenger.
so, you see, these kind of chat program should connect to their server. if we can block the connection between my router and their server, it makes  sense. i think, yahoo messenger is the hard one to block. any one can give me a complete list of yahoo messenger server?
thank you in advance

levitate

面對(duì)現(xiàn)實(shí)吧,聊天工具堵是堵不住的,現(xiàn)在大家都看好http代理,你怎么關(guān)?關(guān)了網(wǎng)都上不去!關(guān)鍵是怎么利用他的問(wèn)題,現(xiàn)在很多公司都開(kāi)始網(wǎng)上即時(shí)通訊弄企業(yè)聊天服務(wù)器了,能節(jié)省很多電話(huà)費(fèi),節(jié)約很多時(shí)間啊^

劍心通明

其實(shí)只要不是把時(shí)間都用到聊天上，偶爾聊一下也無(wú)可厚非，只要把工作作好，娛樂(lè)一下我想也應(yīng)該在允許范圍內(nèi)的，其實(shí)這些東西最好的解決方法就是用行政命令，呵呵

peter333

impossible?  how come there are many progeams for sale in the market to block chat program? any other idea?

thx

rainren

將這些即時(shí)聊天的服務(wù)器都block! 有點(diǎn)麻煩!