NFS versus the firewall
Mr.Scrooge
maximilian_bianco at yahoo.com
Wed Jan 2 03:29:17 UTC 2008
I have been watching this one for just this reason. Thanks this seems to explain some issues i was
having with a file server i was attempting to access. I settled for samba in the end though it
nags at me to "settle" for anything. I will have to try this when i find a spare moment.
Happy New Year,
-Max
--- "Amadeus W.M." <amadeus84 at verizon.net> wrote:
>
> The difficulty with nfs is that it uses a few auxiliary rpc services,
> which by default get started on a random port. These random ports must be
> open in the firewall, but because they are random, the iptables has no
> idea what they might be.
>
> The cure is to force these services to ALWAYS start on pre-assigned
> ports, and open these ports in the firewall.
>
> To this end, on the nfs server
>
> 1) Create a file /etc/sysconfig/nfs with the following contents:
>
> RQUOTAD_PORT=4000
> LOCKD_TCPPORT=4001
> LOCKD_UDPPORT=4001
> MOUNTD_PORT=4002
> STATD_PORT=4003
>
> The nfs config file already exists, but it's full of comments. Erase
> everything and put these lines in, or just edit the appropriate lines in
> the existing file. You can choose any ports available, not necessarily
> 4000-4003.
>
>
> 2) Open range 4000-4003 tcp and udp in iptables. This you can do
> manually, but it can be done from system-config-firewall very easily and
> intuitively.
>
> 3) Open port 111 (portmapper) and 2049 (nfs) as well.
>
> Done.
>
>
> Now, from any client (which should be running the automounter (autofs) by
> default), you should be able to
>
> cd /net/nfsserver/exported/partition
>
>
> I have all this up and running, and it's pretty cool to watch video that
> resides on my main pc (nfs server) on my big hdtv, via nfs and a wireless
> laptop that sits on top of my tv.
>
>
> --
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