FreeBSD

Install the tor package:

pkg install tor ca_root_nss

or for alpha releases:

pkg install tor-devel ca_root_nss

Put the configuration file /usr/local/etc/tor/torrc in place.

#change the nickname "myNiceRelay" to a name that you like
Nickname myNiceRelay
ORPort 9001
ExitRelay 0
SocksPort 0
# Change the email address bellow and be aware that it will be published
ContactInfo tor-operator@your-emailaddress-domain
Log notice syslog

Ensure that the random_id sysctl setting is enabled:

echo "net.inet.ip.random_id=1" >> /etc/sysctl.conf
sysctl net.inet.ip.random_id=1

Start the tor daemon and make sure it starts at boot:

sysrc tor_enable=YES
service tor start

Optional but recommended:

To get package updates faster after they have been build it is best to switch from the "quarterly" with "latest" repository.

Create the following folder:

mkdir -p /usr/local/etc/pkg/repos

and create the file /usr/local/etc/pkg/repos/FreeBSD.conf with the following content:

FreeBSD: { enabled: no }

FreeBSDlatest: {
  url: "pkg+https://pkg.FreeBSD.org/${ABI}/latest",
  mirror_type: "srv",
  signature_type: "fingerprints",
  fingerprints: "/usr/share/keys/pkg",
  enabled: yes
}