H-2. ipconfig and ifconfigOn Unix, you can obtain the machine's network configuration using ifconfig. The command on Windows is ipconfig. To summarize the command:
Here's a run of ifconfig on a Unix system: $ /sbin/ifconfig -a eth0 Link encap:Ethernet HWaddr 00:11:43:17:06:8D inet addr: 192.168.0.48 Bcast:192.168.0.255 Mask:255.255.255.0 inet6 addr: fe80::211:43ff:fe17:68d/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:282499 errors:0 dropped:0 overruns:0 frame:15 TX packets:33484 errors:0 dropped:0 overruns:0 carrier:0 collisions:550 txqueuelen:1000 RX bytes:43199045 (41.1 MiB) TX bytes:6730704 (6.4 MiB) Interrupt:169 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:304 errors:0 dropped:0 overruns:0 frame:0 TX packets:304 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:26811 (26.1 KiB) TX bytes:26811 (26.1 KiB) sit0 Link encap:IPv6-in-IPv4 NOARP MTU:1480 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) Note that along with the IP address and other related information, we see the MAC address, labeled as ether. Windows output looks like the following: C:\>ipconfig Windows IP Configuration Ethernet adapter Local Area Connection: Media State . . . . . . . . . . . : Media disconnected Ethernet adapter Wireless Network Connection 2: Connection-specific DNS Suffix . : hsd1.ga.comcast.net. IP Address. . . . . . . . . . . . : 192.168.1.120 Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : 192.168.1.3 |