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I have Data Domain with nfs shares created and exported to the SLES 11 server. We are trying to mount using the mount -t -o <options> DDIP:/backup <mount> and it times out after few minutes. We figured that its a firewall issue. I have been reading lot about the nfs ports and looks like the important once are 111 (portmapper) and the 2049 (nfsd). But the rpcinfo -p on the client shows more TCP and UDP ports for nlockmgr and mountd. Should i open those ports as well in firewall ?
Another question is which way should be the rule implemented.
1) Allow bidrirection on ports 2049 & 111.
2) Allow 2049 & 111 ports from client to server.
3) Allow 2049 & 111 ports from server to client.
Distribution: Ubuntu 11.4,DD-WRT micro plus ssh,lfs-6.6,Fedora 15,Fedora 16
if you can ssh into the machine than you have two possibilities,
1) install and use FUSE SSHFS instead of NFS
2) create an SSH tunnel to forward the NFS port
otherwise yes, the ports probably should be opened
Unfortunately i cant install anything other than opening the ports. I was more looking towards which ports needs to be open other than 111 and 2049 and should it be open from client to server or from server to client.
are you able to ssh into the server from the client?
again if so as you are not willing to use sshfs a reverse ssh connection will solve the problem without having to deal with installing anything more. just requires an ssh connection from the server to the client.