Here's a guide to add or remove a secondary IP address on Ubuntu
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29 Sep 2026 05:58
by Brian Lykke
MAC addresses are one of the fundamental building blocks of computer networking. While they may seem mysterious, they're simply hardware identifiers used for communication on your local network.
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22 Sep 2026 07:12
by Brian Lykke
Block entire countries to reduce malicious traffic in your homelab or self-hosted environment. Learn how to use UniFi gateways for GeoIP filtering and when it makes sense to implement this strategy.
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11 Aug 2026 13:41
by Brian Lykke
Securing Nginx doesn’t require complex tools or deep networking knowledge. A few small changes - rate limiting, hiding server tokens, using a catch‑all, and organizing your configs - can dramatically reduce malicious traffic and protect your backend services.
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04 Aug 2026 07:13
by Brian Lykke
DNS is the phonebook of the internet. Changing your DNS server can impact speed, privacy, security, and content filtering. Let's dive into a bunch of different Public DNS Servers and what they offer.
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16 Mar 2026 09:13
by Brian Lykke
In 2026, the question of whether you still need a firewall is more relevant than ever. With the rise of IoT devices, smart home technology, and increasingly sophisticated cyber threats, having a firewall in place is crucial for protecting your network and devices.
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03 Mar 2026 13:37
by Brian Lykke
A quick guide on setting up a rule in Windows Defender Firewall with Advanced Security and UFW on Linux
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01 Mar 2026 22:32
by Brian Lykke
A guide on how to set up Port Forwarding for your internal services
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01 Mar 2026 18:06
by Brian Lykke
Static, Dynamic & Carrier NAT Explained.
You can configure your router perfectly and still fail to host anything - simply because your public IP situation makes it impossible.
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01 Mar 2026 14:41
by Brian Lykke
A quick explainer on TCP vs UDP (and why games use UDP)
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01 Mar 2026 14:41
by Brian Lykke