[Koha] Can't reach web install on Ubuntu 12.04

[Triana Carmenate]

I am trying to install Koha on Ubuntu 12.04 Desktop, following the
instructions from here
http://wiki.koha-community.org/wiki/Koha_on_ubuntu_-_packages.
However, when I try to access the administration website it will not open.
I am using a dynamic dns. Is there anything I need to configure with
apache2 to get my site running?

Thanks,
tcarm