回複：為什麽我竟可以訪問不在我局域網內的私有的 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： 

• 謝了。這麽說是ISP欠佳。對方的防火牆也沒設好。我的防火牆要不讓外麵的存取了。 -yuhaian- ♂ (0 bytes) () 04/01/2012 postreply 03:41:54