Lesson 10
Troubleshooting TCP-IP Connections Conclusion
Troubleshooting TCP/IP connections can be difficult, but now you have a set of powerful tools to track down and fix errors.
ping
, netstat
, and arp
are useful tools for finding addressing problems, which arise most commonly when network parameters are entered incorrectly on a host.
You can recheck and modify these settings to ensure proper operation using ifconfig
. Check the man pages of each tool for more detailed information. When you need to connect a computer over a modem, use Red Hat's GUI tools to simplify configuration. You have seen many of the useful utilities Red Hat provides to make a productive Internet-enabled workstation.
Learning objectives
Having completed this module, you should now be able to:
- Describe the function of
netstat
, arp
, and ifconfig
- Use the
ping
command to troubleshoot connectivity problems
- Use the
ifconfig
command to resolve TCP/IP problems
- Use the
arp -a
command to resolve TCP/IP problems
- Use the
route
command to set your default gateway
- Configure a modem to create a new PPP connection
- Use the Dialup Configuration Tool to configure a PPP connection
- Use RP3 to activate a PPP connection
Glossary terms
The following terms were introduced in this module:
- Address Resolution Protocol: ARP is the method Ethernet computers use to assign IP addresses to Ethernet card addresses.
- Dial-up: Refers to modem connections to ISPs usually using the PPP protocol.
- Logical link: A type of file that is a reference to another real file.
The next module covers NIS client networking.
TCP/IP Linux Networking - Quiz
Before moving on to the next module, click the Quiz link below to check your understanding of TCP/IP and Linux networking.
TCP/IP Linux Networking - Quiz