Port 2049: NFS
Network file system shares. Keep storage traffic on a private network.
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Port Lookup
Port 2049 at a glance
Port2049
ProtocolTCP/UDP
ServiceNFS
Open to the Internet?No, keep it on a private network
See What Is Listeningss -lntup | grep ':2049 '
Test From Outsidenc -zv your-server 2049
Block with UFWufw deny 2049/tcp; ufw deny 2049/udp
Block with nftablesnft add rule inet filter input meta l4proto { tcp, udp } th dport 2049 drop
NFS uses TCP/UDP port 2049. Network file system shares.
Keep storage traffic on a private network.
If ss shows something listening on port 2049 on a public address, bind it to 127.0.0.1 or a private interface in the service's own configuration, and drop the port in the firewall as well.
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Questions
What is port 2049 used for?
NFS. Network file system shares.
Is it safe to open port 2049?
No, keep it on a private network. Keep storage traffic on a private network.
How do I check if port 2049 is open?
On the server, ss -lntup | grep ':2049 ' shows what is listening. From another machine, nc -zv your-server 2049 shows whether the firewall lets it through.
How do I block port 2049?
With UFW: ufw deny 2049/tcp and ufw deny 2049/udp. With nftables, add a drop rule for dport 2049 in your input chain.
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