Hello:
I’m new to Truenas and encountering an issue with Proxmox accessing an NFS share.
Currently, I am using TrueNAS-SCALE-24.04.0. Proxmox is in one subnet (192.168.100/25), and TrueNAS has two interfaces (192.168.100/25 for management) and (192.16.108/25 for NFS).
From Proxmox’s shell, if I run showmount -e 192.168.108.x, it will time out with:
rpc mount export: RPC: Timed out
If I run showmount -e 192.168.100.x, it works fine so I dug into the firewall rules.
I allow the source to destination on TCP/UDP 111 and 2049. But in the firewall logs, I’m also seeing what might be random source ports to not-so-random high ports from source to destination:
PROTO=TCP SPT=910 DPT=60721
PROTO=TCP SPT=789 DPT=60721
PROTO=TCP SPT=1003 DPT=60721
PROTO=TCP SPT=733 DPT=60721
I added TCP:60721 to my allow firewall rules, and the NFS client in Proxmox is happy.
My concern is that this port number is not listed as a standard port in Truenas’ documentation: Default Ports | TrueNAS Documentation Hub
I couldn’t find guidance on any high port ranges one should accommodate in this forum.
Does anyone have any input on this subject? I would hate it if the port changed due to some server maintenance/configuration change.
Thanks