NFS without rpcbind?

Dan Casey dcasey at
Tue Apr 24 13:33:20 UTC 2007

    That makes more sense.  Actually I do not care if it is tcp or udp,
so long as the ports are not dynamically assigned.  I'll have to give
what you said a try.  Up until now I thought there was now way to do
this without dynamic ports.

Erik Norgaard wrote:
> On Mon, 23 Apr 2007, Dan Casey wrote:
>> It was my understanding that NFS worked off of RPC.  I accidently
>> stumbled upon some redhat docs that said you use TCP based NFS which
>> will not require rpc?  I think this is an NFSv4 feature, but I'm not
>> sure.  I would like to achieve this using FreeBSD 6.2.  My goal that I'm
>> trying to accomplish is to get nfs to work in an environment where all
>> traffic is denied by default.  Using rpcbind doesn't work well with that
>> type of setup.
>> I tried the following
>> nfs_reserved_port_only="YES"
>> nfs_server_enable="YES"
>> nfs_server_flags="-t -n 4 -h 10.a.b.c"
>> This spawned rpcbind which I didn't want.   Does anyone know how to do a
>> tcp only nfs implimentation?
> AFAIK nfs v4 is not done yet, the client side is but not the server
> side. But FBSD do have a tcp based nfs. This doesn't however change
> anything with respect to avoiding rpcbind.
> RPC is used to tell the client at which port the daemons bind. These
> may be assigned dynamically (I think mountd is dynamic but nfsd static
> to 2049). Basically the client connects to the rpcbind deamon to
> request which ports the mountd and nfsd are on.
> You can force both to bind to a static port.
> rpcbind_enable="NO"           # Run the portmapper service (YES/NO).
> nfs_server_enable="YES"       # This host is an NFS server (or NO).
> mountd_enable="YES"           # Run mountd (or NO).
> mountd_flags="-r -p 59"       # Force mountd to bind on port 59
> will force mountd to bind to port 59. Then it should be possible to
> run the nfs server without rpcbind, but I don't remember how to
> configure the client side.
> Cheers, Erik

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