Simple Network Troubleshooting
In This Chapter
Doing Basic Cable and Link Tests Testing Your NIC How to See MAC Addresses Usingpingto Test Network Connectivity Usingtelnetto Test Network Connectivity Testing Web Sites with thecurlandwgetUtilities ThenetstatCommand The LinuxiptablesFirewall Usingtracerouteto Test Connectivity Using MTR to Detect Network Congestion Viewing Packet Flows withtcpdump Viewing Packet Flows withtethereal Basic DNS Troubleshooting Usingnmap Determining the Source of an Attack Who Has Used My System? Conclusion
You will eventually find yourself trying to fix a network related problem, which usually appears in one of two forms. The first is slow response times from the remote server, and the second is a complete lack of connectivity. These symptoms can be caused by:
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