回复：为什么我竟可以访问不在我局域网内的私有的 IP 地址?

An extract from RFC 1918 :

Routers in networks not using private address space, especially those of Internet service providers, are expected to be configured to reject (filter out) routing information about private networks.

Note [are expected to be configured to reject], so there seems to be no absolute rules.

76.14.1.122 is configured to pass your packets to 76.14.1.121 which decides ... which makes them arrive finally at 10.10.12.1

If all the intermediate routers belong to your ISP, they can do whatever they want within their network. But what they did is obviously bad for them as you can access their machines from outside world.

所有跟帖： 

• 谢了。这么说是ISP欠佳。对方的防火墙也没设好。我的防火墙要不让外面的存取了。 -yuhaian- ♂ (0 bytes) () 04/01/2012 postreply 03:41:54