请教具体的判断方法... ... 另外像下面这种情况是内网还是外网?该怎么判断? Windows IP Configuration Ethernet adapter 本地连接: Connection-specific DNS Suffix . : Autoconfiguration IP Address. . . : 169.254.42.173 Subnet Mask . . . . . . . . . . . : 255.255.0.0 Default Gateway . . . . . . . . . : PPP adapter 宽带连接: Connection-specific DNS Suffix . : IP Address. . . . . . . . . . . . : 10.14.199.136 Subnet Mask . . . . . . . . . . . : 255.255.255.255 Default Gateway . . . . . . . . . : 10.14.199.136 C:\Documents and Settings\Administrator>