Introduction
A network issue is when there are issues connecting to a server, or the server cannot connect to other servers, and the issue cannot be explained by the operating system configuration. Multiple tools can assist with troubleshooting network issues. This article provides links to articles to help with network-related troubleshooting based on the situation.
Testing general network connectivity
The following tools test general connectivity to the server by default and use ICMP packets which can be misleading depending on firewall configurations.
How to use the traceroute command
Testing specific ports for issues
These tools help determine if a service is responsive and can help determine if a firewall is blocking the connection.
Using telnet to troubleshoot connectivity issues
Monitoring current traffic on the server
These tools can help actively monitor inbound and outbound traffic on the server.
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