How does lockd work when specifying mountd port.
Subsystems (2)
Hi.
I have opened ports 111, 2049 and 32700 through my firewall for NFS traffic. 32700 is for mountd. I am wondering how lockd works under these conditions? Does it talk through one of the mention ports or does it not work (I can't see any dropped packets, but lockd is still running).
Also, how does this work with many NFS clients? Will they all go through 32700 for mounting and will this cause a problem?
Thanks,
Erik Enge.
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it turns out with RH8.0 (maybe earlier versions as well) you can specify the port at insmod time by setting nlm_udpport or nlm_tcpport
You can also sett nlm_grace_period and nlm_timeout as well...
Quoted 15 lines · Erik Enge
Quoted 8 lines · Steve Dickson
Lockd gets an enumerated port number and then registers
it with the portmapper. Then processes ask portmapper
(or rpcbind if your talking to Solaris) for the port. so you will have to open up the port after lockd has started. IMHO, This may not be too wise to opening up all these ports,
you might want to think of using a VPN or SSH....Thanks for your reply.
Quoted 9 lines
Is there no way I can specify this port and have all processes use the same port and then open only that one through the firewall?
I guess this means that I'm not using lockd at the moment. Not devastating considering we have virtually only one NFS client.
Erik.
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