networking
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Solved: Why some Azure services have windows.net domain?
Firewall blocking Azure due to a windows.net domain? Learn the legacy reasons why and discover practical fixes to unblock your CI/CD pipelines. Continue reading
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Solved: Checking Port Availability: A Python Port Scanner for SysAdmins
Learn to build a simple Python port scanner for sysadmins. This guide uses the socket module to quickly check port availability and save valuable time Continue reading
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Solved: Books for network architecture?
Stop debugging mysterious cloud network issues. Build a solid foundation with battle-tested books and learning paths for modern network architecture. Continue reading
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Solved: The internet guy is supposed to come tomorrow. How do I explain this to him
Struggling with a “duplicate name exists on the network” error? Learn why your phone and a server are fighting and get three practical solutions to fi Continue reading
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Solved: Thoughts on Wireguard?
WireGuard’s simplicity is a double-edged sword. A senior engineer explains the challenges of managing it at scale and offers three practical solutions Continue reading
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Solved: Same SSID with different passwords?
Can’t connect to Wi-Fi on the same SSID after a password change? Learn why Linux gets stuck on old credentials and how to fix it fast on your server. Continue reading
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Solved: I think its time to look Cloudflare alternatives.
Considering Cloudflare alternatives due to internal DNS conflicts? This guide explains the root cause and offers 3 practical fixes before you switch. Continue reading
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Solved: classic networking books still valid?
Are networking books obsolete in the cloud era? Discover why fundamentals are more critical than ever for debugging modern, abstracted infrastructure. Continue reading
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Solved: Quality of engineers is really going down
Are engineers getting worse? A senior dev explains why “it’s the network” is usually a firewall issue and how to debug it before a 2 AM PagerDuty call Continue reading
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Solved: Help: DNS Broken in 29.1
Struggling with DNS failures after an update? Learn to fix the systemd-resolved issue with three practical solutions, from a quick hack to a permanent Continue reading