Troubleshooting TCP/IP
The following commands can be used to troubleshoot TCP/IP. For more details on these commands, see Chapter 3:
- dig
Query the DNS name service.
- ifconfig
Provide information about the basic configuration of the network interface.
- ifup and ifdown
On many systems used to start or stop a network interface.
- iwconfig, iwlist, and wlancfg
Tools commonly used to configure a wireless network interface.
- nc
Read and write data across a network connection.
- netstat
Display network status.
- ping
Indicate whether a remote host can be reached.
- route
Allows you to read and set default gateway information, as well as static routes.
- tcpdump
Dump network packet information to the screen or to file.
- traceroute
Trace route taken by packets to reach network host.
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