I have installed NFS Server on CentOS 7. I have two other hosts, that I want to share different directories with. Here’s my
/home/WS2016 192.168.200.2(rw,sync,no_subtree_check) /home/debian 192.168.120.1(rw,sync,no_subtree_check)
As shared directories’ names hint, one is dedicated to Windows Server 2016, and the other to Debian 9 host.
Debian 9 only needs port 2049 (!) to be open for
sudo mount 192.168.120.2:/home/debian /mnt/nfs/storage. R/W access works fine with just that port being allowed by
Windows Server on the other hand, can have at best R/O access through UNC (
\\IP\) or Network Drive Mapping.
To know which ports are used, I
grep udp from
rpcinfo -p‘s output and ignore dynamic ports. I am not sure about port 20048. Debian does not need it?
So, I would like to know:
- Is it possible to leave just port(s) 2049/111 opened for TCP/UDP and have working R/W access via UNC path on Windows?
- If not, do I simply combine
-m multiport --dports 111,2049,20048flags in an
Quick UPD: here’s
ls -la /home/ output from the NFS Server host
[[email protected] ~]# ls -la /home/ total 0 drwxr-xr-x. 5 root root 51 10. may 10.48 . dr-xr-xr-x. 17 root root 242 9. may 22.07 .. drwxr-xr-x 2 nfsnobody nfsnobody 32 10. may 12.34 debian drwxr-xr-x 2 nfsnobody nfsnobody 18 10. may 15.54 WS2016
NFSv4 requires only port 2049. It’s unlikely that the mount being readonly has anything to do with which ports are open, provided you actually mounted the share with NFSv4. (And there’s virtually no reason to use the ancient 1990s era NFSv3 or the prehistoric NFSv2. You should ensure that you aren’t.)
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