network issues

How do I troubleshoot proxy server issues?

1. Verify the Problem Gather detailed information from users about the issue (slow connection, access denied, cannot connect). Determine whether the issue affects all users, specific applications, or certain locations/subnets. Check for specific error codes or messages displayed to users or in proxy logs. 2. Check Network Connectivity Ping the proxy server to ensure you […]

How do I troubleshoot DNS resolution issues in IT infrastructure?

Troubleshooting DNS resolution issues is a core skill for infrastructure engineers. DNS underpins almost all network communication, so when it breaks, things stop working fast. Here’s how to isolate and fix the problem: 1. Verify the Problem Identify whether the issue affects specific systems, services, or the entire network. Try pinging the hostname (e.g., ping […]

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