Mac OS X Server,  Mac Security

Forcing NFS to Use TCP

NFS has 3 settings in Lion Server: nbDaemons, the number of NFS daemons, useTCP, whether or not TCP is used and useUDP, whether or not udp is used. To disable UDP forces TCP:

serveradmin settings nfs:useUDP = 0

Or to turn UDP back on:

serveradmin settings nfs:useUDP = 1

To disable TCP if you’d rather just use UDP:

serveradmin settings nfs:useTCP = 0

Or to turn TCP back on:

serveradmin settings nfs:useTCP = 1