Hi all, Which ports do I need to have open on an NFS client's firewall to allow it to connect to a remote NFS servers? When I disable iptables (using ConfigServerFirewall), it connects fine, but as soon as I enable it, NFS gives me this error: root at saturn:[~]$ mount master1.mydomain.co.za:/saturn /bck mount: mount to NFS server 'master1.mydomain.co.za' failed: RPC Error: Unable to send. I have added ports 111 & 2049 in both the TCP & UDP ingres & exgress ranges, but that doesn't seem to help. portmap & nfs is running as well. But as I say, as soon as I disable the firewall, it mounts fine. Google search results reveal a lot of different ports, like 4000:4004, 83xxxx (something, I forgot) but it still doesn't help. root at saturn:[~]$ rpcinfo -p program vers proto port 100000 2 tcp 111 portmapper 100000 2 udp 111 portmapper 100021 1 udp 48996 nlockmgr 100021 3 udp 48996 nlockmgr 100021 4 udp 48996 nlockmgr 100021 1 tcp 47195 nlockmgr 100021 3 tcp 47195 nlockmgr 100021 4 tcp 47195 nlockmgr 100011 1 udp 4004 rquotad 100011 2 udp 4004 rquotad 100011 1 tcp 4004 rquotad 100011 2 tcp 4004 rquotad 100003 2 udp 2049 nfs 100003 3 udp 2049 nfs 100003 4 udp 2049 nfs 100003 2 tcp 2049 nfs 100003 3 tcp 2049 nfs 100003 4 tcp 2049 nfs 100005 1 udp 4003 mountd 100005 1 tcp 4003 mountd 100005 2 udp 4003 mountd 100005 2 tcp 4003 mountd 100005 3 udp 4003 mountd 100005 3 tcp 4003 mountd -- Kind Regards Rudi Ahlers SoftDux Website: http://www.SoftDux.com Technical Blog: http://Blog.SoftDux.com Office: 087 805 9573 Cell: 082 554 7532 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20100218/c8721264/attachment-0004.html>