Here are a list of commands that can help you debug network issues on Windows Machines

How to Troubleshoot Basic TCP/IP Problems (from JongHa Kim's Blog) http://support.microsoft.com/default.aspx?kbid=306212 Network TCP/IP 1. Connect to an IP address Ping Ping –a 2. Unable to connect to a specific IP address Check TCP/IP configuration Ipconfig /all 3. Ping the loopback address Ping 127.0.0.1 Fail -> TCP/TP reinstallation 4. Ping computer’s IP address Ping 157.60.10.175 Fail -> network adapter driver reinstallation (Not good) 5. Clear the address resolution protocol(ARP) cache Arp –a Arp –d : remove any incorrect entries in the ARP cache, clear all 6. Verify the default gateway 7. Verify persistent route table entries Route print 8. Use the tracert command (trace the hops between Tracert 9. Host file %SystemRoot%\System32\Drivers\Etc 10. LMHost file %SystemRoot%\System32\Drivers\Etc