UFW and DRBL problem

[m4rek11]

Hello everyone!

I have a problem with my drbl server on Ubuntu 12.04. I enabled UFW and when I boot any client I got error like below:

1. Is the driver of the network card loaded succesfully?
   Yes.
2. The TCP wrapper setting and firewall rules in your DRBL server, do you block the clients?
   UFW problem..., I think.
3. Is there any other DHCP server...
   No, I have only one DHCP.
4. The DRBL server is able to reverse-map this client IP address.

I think the ufw blocks something and a I don't know what. Actually have rules
1. 68 and 68 UDP allow anywhere (DHCP).
2. 69/udp allow anywhere (TFTP).

What I omitted? What else should I add?

I'll be grateful for the help.

[Steven Shiau]

The services required for DRBL is: DHCP, TFTP, NFS, and NIS. Therefore make sure your UFW should not block them.

Steven.