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If you believe that something is wrong with the networking layer, you may need to run some reconnaissance tests and commands to find any problems. The following table shows some reconnaissance tests and commands you can run for both Windows and Linux:
| Purpose | Windows | Linux |
|---|---|---|
| Determine own IP address, netmask, and broadcast. | ipconfig/all | ifconfig |
| Determine own gateway and routing table. | route print | route -ven |
| Determine whether you can ping the computer trying to send data to Data Collector. Determine whether that computer can ping the server. | ping -t [IP addr] | ping [IP addr] |
| Determine what ports are LISTENING or ESTABLISHED to/from this computer. Check ports 32323, 80 (Windows)/8080 (Linux), 3306. | netstat -a | netstat -a |
| Determine whether a running process suggests that a component is running (such as, JavaService.exe, java.exe, or java). | taskmgr.exe | ps auxwf |