Dear NFS people,
I am trying to access NFS services running on a 2.4.20 kernel, using UDP. The client is running SUSE 9.3 with kernel 2.6.11.4-21.12 and iptables acting as a firewall.
The problem is that the nfsd on the server sends UDP replies to random ports <1024 on the client. Is there a way to fix the port chosen on the client end so that I can make a hole in the firewall for it?
Ian Grant
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On Thu, 2006-07-06 at 16:51 +0100, Ian Grant wrote:
> Dear NFS people,
>
> I am trying to access NFS services running on a 2.4.20 kernel, using UDP. The client is running SUSE 9.3 with kernel 2.6.11.4-21.12 and iptables acting as a firewall.
>
> The problem is that the nfsd on the server sends UDP replies to random ports <1024 on the client. Is there a way to fix the port chosen on the client end so that I can make a hole in the firewall for it?
>
> Ian Grant
That is unfortunately not possible at this time. Is there any reason why
you can't use TCP?
Cheers,
Trond
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> That is unfortunately not possible at this time.
:-(
> Is there any reason why you can't use TCP?
That's the plan, but it's a legacy system providing an internet service.
It's "on the list" to be upgraded "Real Soon Now".
It may now be moved up the list :-)
Thanks.
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On 6 Jul 2006, at 18:06, Trond Myklebust wrote:
> On Thu, 2006-07-06 at 16:51 +0100, Ian Grant wrote:
>> Dear NFS people,
>>
>> I am trying to access NFS services running on a 2.4.20 kernel,
>> using UDP. The client is running SUSE 9.3 with kernel
>> 2.6.11.4-21.12 and iptables acting as a firewall.
>>
>> The problem is that the nfsd on the server sends UDP replies to
>> random ports <1024 on the client. Is there a way to fix the port
>> chosen on the client end so that I can make a hole in the firewall
>> for it?
>>
>> Ian Grant
>
> That is unfortunately not possible at this time. Is there any
> reason why
> you can't use TCP?
Hi Trond,
Thanks. TCP doesn't work because the server host is multi-homed and
the NFS server is using the wrong source IP address which defeats the
iptables TCP connection tracking in the client.
I have just opened up the client to all UDP from port 2049 on the
server and this is OK for now.
Cheers
Ian
Using Tomcat but need to do more? Need to support web services, security?
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