[K12OSN] iptables blocking tftp on default installation

[Peter Scheie]

I did another installation of beta 7 for version 5.0.  I accepted the 
defaults for everything, except for two things: the host name, and the 
firewall.  The only thing I changed for the firewall is that I selected 
the option to open port 443 for https, by just selecting the checkbox; I 
didn't add any other options.  After the server finished the 
installation, I tried to boot my iPaq client, which uses PXE.  It hung 
at the tftp stage, until I turned iptables off at the server, and then 
the client continued to boot normally.

What assumption does 5.0 make about the state and open port of the 
firewall/iptables?

Petre