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Re: NFS versus the firewall



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 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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> 



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