To enable SSL, we need to install the ssl module for apache, and to create a certificate file for the admin site.
The first is easily done by doing the debian install thingy:
apt-get install libapache-mod-ssl
We have now installed the apache SSL module, but still need to activate it. This is done by editing /etc/apache/httpd.conf and adding the following line:
LoadModuleLoadModule ssl_module /usr/lib/apache/1.3/mod_ssl.so