That's what I though (but for me it's actually apt-get install). I think what is happening is CSF may be blocking the munin port (even though it should be allowing it as it's configured as a valid port).
Sorry about the delay in updating... it's working now. It was a munin/munin-node problem (forgot to change the IP's for the individual server configs and then allow connections from that IP in CSF to be allowed at all times).