BSD or Ubuntu 12.04.4 LTS

[incurablegeek]

Not wishing to appear ungrateful but I am in the process of migrating from Windows 7 to Ubuntu. With my Cisco router classes I am in definite sensory overload so I wish to keep things simple if possible.

My questions, then:

1. Is there any reason why I cannot install pfSense on Ubuntu 12?

2. Is BSD preferable? If so, why?

Will use pfSense on a network appliance (firewall) with Cisco 2911 router and Cisco SG-300 switch - 5 computers, file server, hosts.

[GruensFroeschli]

pfSense is not a program to install.
It's a whole distribution based on FreeBSD.
Similar to how ubuntu is based on debian.

[incurablegeek]

Therein lies my confusion. Thank you for your patience.  ;)

Dennis