Networking and VoIP, from the field
Guides, reviews and opinions from Chris Sherwood and the Crosstalk Solutions team, based on the networks and phone systems we design and support every day.
Latest posts
Raspberry Pi LAN Speed Test
How to run an OpenSpeedTest LAN speed test server on a Raspberry Pi with Docker and Portainer to test your local network speed.
Definitive Guide to Hosted UniFi 2021
Host a UniFi Controller on an Ubuntu 20.04 Vultr server: SSH keys, UFW firewall, UniFi install, setup wizard and Let's Encrypt SSL.
Raspberry Pi 4 Boot with USB
How to make a Raspberry Pi 4 boot from a USB SSD or M.2 drive: copy the microSD card to the drive and set USB boot order in raspi-config.
VoIP.ms setup using pjsip on FreePBX
Step-by-step VoIP.ms SIP trunk setup on FreePBX with pjsip, covering sub accounts, DID routing, the trunk and inbound and outbound routes.
How To: Enable Jitsi Server Authentication
How to enable Jitsi Meet authentication with Prosody so only registered users can start meetings while guests still join anonymously.
How To: Install Jitsi Server on Ubuntu 19.10
Install a self-hosted Jitsi Meet video conferencing server on an Ubuntu 19.10 Vultr VPS, with SSH keys, UFW firewall rules and Let's Encrypt.
How to Share Internet with your Neighbors
How to share your internet with neighbors over a Ubiquiti point-to-point wireless bridge with a separate, throttled guest VLAN and SSID.
Getting Started with Raspberry Pi 4
Getting started with Raspberry Pi 4: flash NOOBS to a microSD card, install Raspbian, update it and enable SSH and VNC for remote access.
Create Your Own Personal VPN Proxy with Streisand
Build your own Streisand VPN proxy server on DigitalOcean: builder droplet, Ansible install, DNS, SSH SOCKS proxy in Firefox and OpenVPN fixes.
Definitive Guide to Hosted UniFi
Host a UniFi Controller on a Vultr or Digital Ocean server: SSH keys, UFW firewall, UniFi install and Let's Encrypt SSL, step by step.
UniFi Controller Installation on Vultr
Install a UniFi Controller on a Vultr Ubuntu 16.04 server: 2FA, server setup, SSH hardening, firewall, swap, Java and the UniFi package.
Long Range Dead Drop
Build a long range dead drop: a Raspberry Pi running PirateBox behind a Ubiquiti LiteBeam AC PtMP link for offline anonymous chat and file sharing.
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