Title : High quality / low latency VOIP server with umurmur/Mumble on OpenBSD Author: Solène Date : 04 July 2019 Tags : openbsd68 Hello, I **HATE** Discord. Discord users keep telling about their so called **discord server**, which is not dedicated to them at all. And Discord has a very bad quality and a lot of voice distorsion. Why not run **your very own mumble server** with high voice quality and low latency and privacy respect? This is very easy to setup on OpenBSD! Mumble is an open source voip client, it has a client named Mumble (available on various operating system) and at least Android, the server part is murmur but there is a lightweight server named umurmur. People authentication is done through certificate generated locally and automatically accepted on a server, and the certificate get associated with a nickname. Nobody can pick the same nickname as another person if it's not the same certificate. ### How to install? # pkg_add umurmur # rcctl enable umurmurd # cp /usr/local/share/examples/umurmur/umurmur.conf /etc/umurmur/ We can start it as this, you may want to tweak the configuration file to add a password to your server, or set an admin password, create static channels, change ports etc.... You may want to increase the `max_bandwidth` value to increase audio quality, or choose the right value to fit your bandwidth. Using umurmur on a DSL line is fine up to 1 or 2 remote people. The daemon uses very little CPU and very little memory. Umurmur is meant to be used on a *router*! # rcctl start umurmurd If you have a restrictive firewall (I hope so), you will have to open the ports TCP and UDP 64738. ### How to connect to it? The client is named Mumble and is packaged under OpenBSD, we need to install it: # pkg_add mumble The first time you run it, you will have a configuration wizard that will take only a couple of minutes. Don't forget to set the sysctl kern.audio.record to 1 to enable audio recording, as OpenBSD did disable audio input by default a few releases ago. You will be able to choose a push-to-talk mode or voice level to activate and quality level. Once the configuration wizard is done, you will have another wizard for generating the certificate. I recommend choosing "Automatically create a certificate", then validate and it's done. You will be prompted for a server, click on "Add new", enter the name server so you can recognized it easily, type its hostname / IP, its port and your nickname and click OK. Congratulations, you are now using your own private VOIP server, for real!