Managing NFS client-communication options from the command line

Use these commands to configure NFS client-communication options on the NIM master.

Use the following commands on the NIM master:

To enable global usage of NFS reserved ports, use the following command:
```
nim -o change -a nfs_reserved_port=yes master
```
To disable global usage of NFS reserved ports, use the following command:
```
nim -o change -a nfs_reserved_port=no master
```
To enable port checking on the NIM master NFS server, use the following command:
```
nfso -o portcheck=1
```
To disable port checking on the NIM master NFS server, use the following command:
```
nfso -o portcheck=0
```
To create a simple KDC server and principals on the NIM master NFS server, use the following command:
```
/usr/samples/nim/krb5/config_rpcsec_server -p <password> -u <user principal name> 
```
This command creates a new-system user name based on the principal name and password provided. See Sample KDC Server Definition File.
To delete the KDC server and principals on the NIM master NFS server, use the following command:
```
/usr/sbin/unconfig.krb
```
This command removes all Kerberos 5 configuration information.