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工作学习 / IT技术讨论 / 请问vpn service 的缺省端口是多少？
-earthcitizen(地球公民);
2004-2-20
(#1613841@0)
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如果连ｖｐｎ连不上，我能用telnet x.x.x.x aa (aa是端口号)来查吗？
-earthcitizen(地球公民);
2004-2-20
(#1613848@0)
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IPSEC: UDP 500; L2TP: UDP 1701; PPTP: TCP 1723 and GRE.
-chinesejade(chinesejade);
2004-2-20
(#1613855@0)
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vpn is just a concept. u need to know which protocol u r using, e.g. pptp, l2tp, ipsec. windows vpn uses pptp by default, which uses tcp 1723.
-speed(如风);
2004-2-20
(#1613856@0)
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Thanks a lot, Chinesejade and speed...Just did a research through interenet and got your point....but still have one question...What is the meaning of IP 协议 ID 47（GRE - 常规路由封装）, 协议 ID 50 (IPSec ESP) 和协议 ID 51 (IPSec AH)? Thanks.
-earthcitizen(地球公民);
2004-2-20
{115}
(#1613974@0)
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Transport Protocol in IP header. TCP=6; UDP=17; GRE=47; IPSEC ESP=50; IPSEC AH=51
-xiaohui(xiaohui);
2004-2-20
(#1614175@0)
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ok, get it...thanks a lot
-earthcitizen(地球公民);
2004-2-21
(#1614641@0)