Monday 10 March 2014

NFS port ranges



Normally, The usage of NFS ports will be dynamically in AIX.... If you would like to set the port ranges, 

The NFS_PORT_RANGE environment variable can be used to limit the source port of network calls the client makes to the server.
If used, this environment variable should be added to the /etc/environment file. The format of the environment variable is as follows:

NFS_PORT_RANGE=udp[4000-5000]:tcp[7000-8000]


OR

Server2:/ # nfso -a | grep port
                   portcheck = 0
      nfs_use_reserved_ports = 0


If nfs_use_reserved_ports=0 AIX server uses nonreserved IP port numbers above 1024 when the NFS client communicates with the NFS server.
If nfs_use_reserved_ports=1 AIX server uses nonreserved IP port numbers below 1024 when the NFS client communicates with the NFS server.

3 comments:

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  3. I'm being pushed to use as small a port range as possible, what determines the minimum required?

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