I am using NFS to share directories with a few other servers on my LAN. I am unable to successfully share these directories unless I disable iptables. I have seen some documentation floating about regarding some steps that need to be taken in order to allow iptables to correctly allow portmapping and NFS to work as needed. However, the documentation is not consistent with my environment. I do not have a /etc/sysconfig/nfs in order to define my nfs ports. RHES4 uses NFSv3. I am unaware if this OS will support v4. I understand v4 does not require portmapper service. Sounds like an improvement.
In any case, I could sure use some help as need to get this server locked down.