1. Enable Automatic Software Updates
One of the most imported things to keeps your relay secure is to install security updates timely and ideally automatically so you can not forget about it. Follow the instructions to enable automatic software updates for your operating system.
2. Enable the EPEL repository
tor package on CentOS/RHEL, you need to install the EPEL repository first:
yum install epel-release
3. Add the following to /etc/yum.repos.d/tor.repo and then install the tor package.
name=Tor for Enterprise Linux $releasever - $basearch
yum install tor
When you install the first package from the EPEL repository you will be asked about verifying the EPEL GPG signing key. Please ensure the key matches with the one available on the Fedora Project website.
4. Put the tor configuration file
/etc/tor/torrc in place
#change the nickname "myNiceRelay" to a name that you like
# Change the email address bellow and be aware that it will be published
5. Enable and start your Tor relay
CentOS 7 / RHEL 7:
systemctl enable tor
systemctl start tor
CentOS 6 / RHEL 6:
service tor enable
service tor start
6. Final notes
If you are having troubles setting up your relay, have a look at our help section. If your relay is now running, check out the post-install notes.