cmd.exe or Powershell on Windows and a console or SSH session in Unix) and execute the following: Open a command prompt on your server (e.g. Telnet is a good command to start your network connectivity tests. The test should verify routing, network address translation, ports, and URLs where applicable. On the source server, perform a operating system level connectivity test on established ports from source server/firewall to destination server/firewall. To help users in troubleshooting problems with network connectivity and firewall rule implementations, included below are step by step commands one can execute on a Windows or Unix system. This post is a detailed version of common practices for troubleshooting firewall rules that have been implemented to allow a server to connect with another server.
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