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2.2.4.5. NFS Firewall Configuration
The ports used for NFS are assigned dynamically by rpcbind, which can cause problems when creating firewall rules. To simplify this process, use the /etc/sysconfig/nfs file to specify which ports are to be used:
MOUNTD_PORT— TCP and UDP port for mountd (rpc.mountd)STATD_PORT— TCP and UDP port for status (rpc.statd)LOCKD_TCPPORT— TCP port for nlockmgr (rpc.lockd)LOCKD_UDPPORT— UDP port nlockmgr (rpc.lockd)
Port numbers specified must not be used by any other service. Configure your firewall to allow the port numbers specified, as well as TCP and UDP port 2049 (NFS).
Run the
rpcinfo -p command on the NFS server to see which ports and RPC programs are being used.
