Ham Radio s/w and Ubuntu? {including Echolink}

[Scott Ehrlich]

I am going to present Linux to my ham radio club at some point in the next 
few months, and wanted to collect info on ham radio software, including 
options for echolink.   Our repeater has an echolink connection, thus if I 
present the software available for it, it might perk up people's interests 
more.

It would also be very helpful if the echlink applications offered 
proxy/firewall options so people at companies or at home that have 
networks that implement firewalls, can proxy out and still get on 
Echolink.

Also, anyone know of a live-on-CD/DVD Ubuntu distribution that may include 
Echolink and/or other ham software?

Thanks for any leads.

Scott, WY1Z