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Tor Relay on OpenBSD

A screenshot showing the bandwidth usage on my server

Initial Setup

I wanted to contribute to the Tor network, so ran my first Tor relay (middle/guard node) on OpenBSD 7.3! Here are some notes that I wrote for myself.

• Follow the OpenBSD instructions on Tor's website

OpenBSD instructions

• Verify that the relay works by checking the logs in `/var/log/daemon/`
• Install Nyx to monitor Tor by running `doas pkg_add nyx`.

Nyx

• Add the following lines to `/etc/tor/torrc` for Nyx to work:

ControlPort 9051
CookieAuthentication 1
DisableDebuggerAttachment 0

• Run `doas rcctl restart tor` to restart the Tor daemon.
• Nyx needs permissions in /var/tor/ to work and, on OpenBSD, that directory is writable by the user _tor so we add the following to /etc/doas.conf:

permit nopass jag as _tor

• Then run `$ doas -u _tor nyx`

That's it! You can find the relays that I’m running on metrics.torproject.org:

My relays on metrics.torproject.org

Help me run relays!

If you'd like me to run more relays on OpenBSD, you can send some money my way, and I'll run more non-exit relays! You can send me donations through PayPal at my email address at the very bottom of the page.

Limiting CPU Consumption

Tor was consuming a lot of CPU resources on the virtual machine, so I limited the bandwidth a bit. To do this, add the following to `/etc/tor/torrc`:

RelayBandwidthRate 1 MBytes
RelayBandwidthBurst 2 MBytes

Contact

jag@aangat.lahat.computer

@jag@weirder.earth