Web Reference: Jul 28, 2025 · This blog helps users troubleshoot firewall and port blocking issues using tools like Nmap, Telnet, and Netcat. Whether you're dealing with NAT problems, blocked ports, or firewall misconfigurations, this guide offers practical steps to identify the root cause and fix it. Ideal for DevOps, sysadmins, and security professionals. Azure DevOps Services | Azure DevOps Server 2022 - Azure DevOps Server 2019 | TFS 2018 You don’t sound like a sysadmin but EDR or AM apps can be configured to scan a network. They look for rogue devices which may pose a security issue or vulnerabilities. Some just run a network inventory. There are many other reasons why this may be happening but this is the most likely.
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