[CentOS] NFS and iptables issues

Ross S. W. Walker rwalker at medallion.com
Thu Sep 13 20:31:28 UTC 2007

Chuck Campbell wrote:
> I've got a newly installed Centos 5.0 box, planned to replace 
> an ageing server
> (solaris box).  I've set up the nfs shares, but the other 
> solaris boxes
> won't mount them, unless I turn of iptables on the Centos 
> box.  If I do that,
> they mount, and all operations tested to date work fine. 
> Iptables is allowing the 2049 tcp and udp ports already.  
> What else needs to
> be opened up in iptables for nfs to work through the firewall?
> I looked at the RHEL system admin guide on NFS and found 
> nothing useful.

I'm guessing portmap most likely... tcp and udp port 111

It's for the RPC calls.


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