NFS security

[TomFrayne]

I am running RH9, FC1, and FC2 on 3 machines, and plan to upgrade to FC2 on all three after I have everything working.

My NFS server is on the FC1 machine, and I have no trouble accessing it from the RH9 machine. However, when I installed FC2 today, I could not access the NFS server.

rpcinfo -p returned:
rpcinfo: can't contact portmapper: RPC: remote system error: no route to host

Disabling the firewall on the FC1 machine bypass this problem, but I need to be able to access NFS on the server without disabling the firewall. Further, when I re-enabled the firewall, I lost access from the RH9 machine.

I don't see anything in /etc/sysconfig/iptables that appears related to the problem. I couldn't find a security log to tell me what is blocking access.

Is there a way I can determine what is blocking my NFS access?

[bilkay]

I'm having pretty much the same problem. I can mount from the Fedora-8 nfs server on the RH9 machine, but not from another Fedora-8 machine.