As a tech enthusiast who has experimented with kernel tuning and network security, you know that the “best” choice depends on whether you want a “set-and-forget” cloud solution or a “tinker-friendly” local server.

Here is a deep dive into NextDNS and how it stacks up against the self-hosted giants.

What is NextDNS?

Think of NextDNS as a “Firewall in the Cloud.” It provides the same ad-blocking and tracking protection as a Pi-hole, but instead of running on a Raspberry Pi in your living room, it runs on a global network of high-performance servers.

The Key Advantages of NextDNS

1. Zero Hardware Required: You don’t need to buy a Raspberry Pi or keep a server running 24/7.
2. Protection Everywhere: Because it’s cloud-based, you can use it on your phone’s 5G connection, at a coffee shop, or at work—not just on your home Wi-Fi.
3. Modern Encryption: It natively supports DNS-over-HTTPS (DoH) and DNS-over-TLS (DoT).
4. Security Feeds: It uses professional threat intelligence feeds to block malware, phishing, and “Newly Registered Domains” (often used for scams) in real-time.
5. Parental Controls: Includes one-click toggles to block apps (TikTok, Roblox, Tinder), enforce SafeSearch, and even set “Recreation Time” schedules.

NextDNS vs. Pi-hole vs. AdGuard Home

While all three do essentially the same job—blocking domains at the DNS level—their “philosophies” are very different.

1. The Pi-hole Perspective

Pi-hole is the original king of network-wide ad blocking.

• Why choose it? If you are a privacy purist. Since it lives on your local network, your DNS queries never leave your house in an identifiable way.
• The Downside: If your Raspberry Pi crashes, your entire house loses internet. Also, keeping it working when you leave the house requires setting up a VPN like Wireguard.

2. The AdGuard Home Perspective

AdGuard Home is often seen as the “modern” Pi-hole.

• Why choose it? It has a much more modern web interface and, unlike Pi-hole, it handles encrypted DNS (DoH/DoT) natively without needing extra software. It also has better built-in client management.
• The Downside: Like Pi-hole, it still requires hardware and local maintenance.

3. The NextDNS Perspective

NextDNS bridges the gap between the two.

• Why choose it? If you want “enterprise-grade” features without the maintenance. It offers multiple “Profiles”—so you can have a strict profile for the kids’ iPads, a performance profile for your gaming PC, and a standard one for your phone.
• The Downside: Once you hit 300,000 queries per month, the filtering stops (unless you pay roughly $20/year).

Verdict: Which should you use?

• Use NextDNS if: You want a professional, multi-device setup that works on 5G/LTE just as well as home Wi-Fi, and you don’t want to manage hardware. It is the best choice for 90% of users.
• Use AdGuard Home if: You want to self-host and enjoy a beautiful UI with native encryption support on your local network.
• Use Pi-hole if: You are a dedicated “Homelab” enthusiast who wants the most lightweight, open-source, and privacy-focused setup possible.

Pro-Tip: You can actually use NextDNS CLI on your server. It acts as a local proxy that encrypts your traffic before sending it to the cloud, giving you the best of both worlds, local caching speed and cloud-based management!

The post What is NextDNS? appeared on Hamradio.my - Amateur Radio, Tech Insights and Product Reviews by 9M2PJU.

Whether you are a civilian looking to escape data-harvesting platforms or a Ham Radio operator wanting to link repeaters over IP, Mumble offers a robust solution that you arguably own and control completely.

What is Mumble?
At its core, Mumble is a client-server voice chat software. Unlike modern platforms where you log into a central company’s “cloud,” Mumble relies on a decentralized architecture:

The Client: The app you install on your PC or phone (Mumble for PC, Mumla for Android, etc.).

The Server (Murmur): The software that hosts the chat rooms. You can rent one, but the real power comes from hosting it yourself on a Raspberry Pi, a VPS, or even an old laptop.

It uses the Opus codec, which provides high-quality audio with remarkably low bandwidth and latency—critical for both fast-paced gaming and radio operations.

Part 1: Civilian Usages – Privacy & Gaming
For non-hams, Mumble is often seen as a “retro” choice, but it beats modern competitors in two specific areas: Latency and Privacy.

1. The Privacy Shield
   When you use Discord, your voice data and text logs pass through (and are potentially stored on) corporate servers. Mumble is different:

Self-Hosting: If you host your own Murmur server, you hold the encryption keys. No third party listens in.

Encryption by Default: Mumble uses TLS/SSL to encrypt the control channel and OCB-AES128 for the voice data. It is secure out of the box.

No Accounts Required: You don’t need to sign up with an email or phone number to join a server; you just need the IP address and a certificate (which the client generates automatically).

2. Gaming & Communities
   Before Discord, Mumble was the king of competitive gaming because of its Positional Audio feature. This links game data to the voice chat, so if a teammate is standing to your left in-game, their voice comes from your left speaker. For makers and DIY communities, it offers a distraction-free environment—no “nitro” upsells, no animated emojis, just crystal-clear voice comms.

Part 2: Amateur Radio Usages – The Digital Bridge
For Amateur Radio operators, Mumble is not just a chat app; it is a powerful tool for RoIP (Radio over IP). Its low latency (often below 20ms) makes it feel almost like RF.

1. Repeater Linking & Remote Audio
   Hams use Mumble to link geographically distant repeaters. Because the audio quality is high and latency is low, you don’t get the “double-talk” issues common with slower VoIP solutions.

Remote Rigs: You can run a Mumble client on a Raspberry Pi connected to your transceiver at your shack, and connect to it from your phone while you are away. This allows you to TX/RX remotely.

2. Hardware Integration (PTT & COS)
   This is where Mumble shines over Skype or Discord. The open-source community has created plugins and forks specifically for radio:

mumbleRF: A patched version of Mumble designed to interface with GPIO pins on a Raspberry Pi. It can trigger a rig’s PTT (Push-to-Talk) when you speak and open the mic when the radio’s Squelch (COS) opens.

HamMumble: An Android client specifically tweaked for Hams, featuring large PTT buttons and settings optimized for radio interface delays.

3. Emergency Comms (EmComm)
   In an emergency where internet is spotty but a local mesh network (like AREDN) is active, Mumble is perfect. It requires very little bandwidth (as low as 10-20 kbps) and can run entirely within a LAN or Mesh network without needing to reach the broader internet.

Getting Started: A Quick Guide
For Users (Clients):

Download: Get the Mumble client for Windows/Mac/Linux, or “Mumla” for Android.

Audio Wizard: Run the audio wizard immediately. This is critical to configure noise suppression and echo cancellation.

Connect: Find a server IP (public directory or private) and connect.

For Admins (Servers):

Install Murmur: The server software is called murmur. On Ubuntu/Debian, it’s as simple as sudo apt install mumble-server.

Configure: Edit the mumble-server.ini file to set a password (superuser) and server name.

Port Forwarding: Default port is 64738 (TCP & UDP). Open this on your router if you want friends to connect from outside your home.

Conclusion
Mumble represents the best of the open-source ethos: it does one thing—voice communication—and it does it perfectly. For civilians, it’s a fortress of privacy. For Hams, it’s a flexible digital patch cable that bridges the gap between RF and the Internet.

https://www.mumble.info

The post Why Mumble is the Best Kept Secret for Amateur Radio and Privacy-Conscious Civilians appeared on Hamradio.my - Amateur Radio, Tech Insights and Product Reviews by 9M2PJU.

For those seeking a flexible and lightweight VPN solution that works seamlessly within Docker, Gluetun has emerged as a popular choice. Developed by Quentin McGaw (@qdm12), Gluetun describes itself as a “swiss-army-knife-like” VPN client that integrates multiple providers, protocols, and additional privacy tools in one compact container.

What is Gluetun?

Gluetun is a VPN client designed to run in Docker containers, offering support for a wide variety of VPN service providers. Unlike most single-provider setups, Gluetun acts as a universal client that can connect to dozens of major VPN services through OpenVPN or WireGuard.

It’s written in Go, based on Alpine Linux for a small footprint, and includes built-in DNS over TLS, firewall features, and proxy servers. This makes it a versatile option for individuals or self-hosters who want both privacy and control over how their traffic is routed.

Key Features

• Wide VPN Provider Support
  Works with many providers including AirVPN, Mullvad, NordVPN, ProtonVPN, Surfshark, Private Internet Access, Cyberghost, Windscribe, and more.
• Protocol Flexibility
  • OpenVPN support for all listed providers.
  • WireGuard support for many providers, with both kernelspace and userspace options.
  • Ability to use custom WireGuard configurations.
• Privacy & Security Tools
  • DNS over TLS with the provider of your choice.
  • Fine-grained blocking of malicious, ad-related, or surveillance domains, updated daily.
  • Built-in firewall kill switch to prevent leaks outside the VPN tunnel.
• Proxies Included
  • A Shadowsocks proxy server (with UDP + TCP tunneling).
  • An HTTP proxy for web traffic.
• Container-Friendly
  • Other Docker containers can connect to Gluetun as their network gateway.
  • LAN devices can also be routed through it.
  • Works across multiple CPU architectures: amd64, i686, ARM (32/64-bit), and even ppc64le.
• Advanced Features
  • Custom VPN server-side port forwarding (for supported providers).
  • Split-horizon DNS (using multiple DNS over TLS providers).
  • Usable as a Kubernetes sidecar container.

Setup and Usage

The project maintains a detailed Wiki with provider-specific instructions, ensuring a smoother setup experience for newcomers. A minimal docker-compose.yml example is provided for those who want a quick start:

services:
  gluetun:
    image: qmcgaw/gluetun
    cap_add:
      - NET_ADMIN
    devices:
      - /dev/net/tun:/dev/net/tun
    ports:
      - 8888:8888/tcp # HTTP proxy
      - 8388:8388/tcp # Shadowsocks
      - 8388:8388/udp # Shadowsocks
    volumes:
      - /yourpath:/gluetun
    environment:
      - VPN_SERVICE_PROVIDER=ivpn
      - VPN_TYPE=openvpn
      - OPENVPN_USER=
      - OPENVPN_PASSWORD=
      - TZ=

With this configuration, Gluetun can function as the backbone of a secure, private networking stack inside Docker.

Project Activity and Community

Gluetun is under active development with regular updates, bug fixes, and new features. It has:

• 11,000+ stars on GitHub.
• 71 releases to date (latest in December 2024).
• Contributions from over 50 developers.

The community often engages via GitHub Issues and Discussions, while the Wiki and documentation provide troubleshooting resources and setup guides.

Licensing

The project is released under the MIT License, allowing free use, modification, and distribution.

Conclusion

Gluetun has become a go-to tool for self-hosters and developers looking for a reliable VPN client in Docker. Its wide provider support, compact footprint, and built-in privacy tools make it an attractive solution for both simple setups and more advanced containerized environments.

Whether you’re running a small homelab or deploying Kubernetes clusters, Gluetun offers a flexible way to integrate VPN connectivity into your workflow without being locked to a single provider.

Explore the project here: Gluetun on GitHub

The post Gluetun: A Lightweight, All-in-One VPN Client for Docker appeared on Hamradio.my - Amateur Radio, Tech Insights and Product Reviews by 9M2PJU.

If you’re looking to improve your internet performance, changing your DNS server might be one of the simplest yet most effective steps. A fast and reliable DNS server can reduce webpage loading times and improve overall browsing speed.

Fortunately, a handy web-based tool—DNS Speed Test Benchmark—makes it easy to find the fastest DNS server for your current location and network setup.

What the Tool Does

The DNS Speed Test Benchmark tool is a lightweight, browser-based utility that helps users compare the performance of various DNS-over-HTTPS (DoH) servers in real time. There’s no need to install software or sign up for anything. Just open the site and start the test with a single click.

Features at a Glance:

• Client-Side Testing Only: All queries are executed from your browser. No personal data is collected, and no backend servers are used.
• DoH Query Testing: It uses DNS-over-HTTPS protocols to provide a modern, secure benchmarking method.
• Real-World Results: Since tests run from your actual network and device, the results are highly accurate and relevant to your location.
• Timeout Handling: Non-responsive DNS servers are automatically marked as unavailable, so the test won’t stall.

What You’ll See

After running the test, the tool displays key performance metrics for each DNS server tested:

• Minimum Response Time
• Median Response Time
• Average Response Time
• Maximum Response Time

These metrics give you a clear picture of how each DNS server performs under your current internet conditions.

A Few Notes

The developers of the tool have built it with accuracy and fairness in mind. For instance, there’s a short warm-up phase before each test to ensure connections are prepped, and HTTP/TLS overhead is factored in to reflect real-world performance more accurately.

Do keep in mind that results can vary depending on:

• Your network traffic
• Time of day
• Device/browser performance
• Geographic location

Running multiple tests at different times can help you get a more comprehensive view.

Try It Now

You can try the DNS Speed Test directly at dnsspeedtest.online. In addition to the test, you can:

• Customize your host list
• Add your own DoH endpoints
• Compare a variety of popular and niche DNS services

No downloads. No sign-ups. Just real-time, browser-based testing.

Final Thoughts

Whether you’re a casual internet user, a web developer, or a privacy advocate looking to switch to a better DNS service, this tool is an excellent way to make data-driven choices. It’s completely free and ideal for identifying the best DNS server for your location.

The project is independently maintained, so if you find it helpful, consider supporting the developer or sharing it with others.

Check it out here https://dnsspeedtest.online

The post Test Your DNS Speed with This Free Benchmarking Tool appeared on Hamradio.my - Amateur Radio, Tech Insights and Product Reviews by 9M2PJU.