tilde.club/docs/shellserver.md

Setting up the tilde.club shell server (user host)

We want to document the ins and outs of setting up the server so others who are interested can learn (and help!).

System setup

For now, this is all documented in a separate server-setup document; ultimately, I presume we'll consolidate it all here.

Email

The default MTA on CentOS is postfix. Our goal was to have a localhost-only mail service, which required that we configure postfix to listen only to localhost, and to bounce any email which local users try to send off-server. Both configuration changes are handled in /etc/postfix/main.cf.

• the inet_interfaces value should just be localhost (inet_interfaces = localhost)
• the default_transport parameter should be the bounce message we want (so add default_transport = error: outside mail is not deliverable to the bottom of the file)

identd

Users will connect from their shell account to an IRC server, so it is very handy to have an identd server. For us that just meant installing the standard CentOS identd server and configuring it to start automatically:

sudo yum install oidentd
sudo /etc/init.d/oidentd start
sudo chkconfig oidentd on