Port 20049

nfsrdma · SCTP/TCP/UDP

RangeRegistered port (1024–49151)
ProtocolSCTP/TCP/UDP
Servicenfsrdma
ReferenceRFC 8267
Modified2017-09-05

Frequently asked questions

What is port 20049 used for?

Port 20049 is registered with the IANA for nfsrdma (SCTP/TCP/UDP). Description: Network File System (NFS) over RDMA.

Is port 20049 a well-known port?

No. Port 20049 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 20049 is open?

Locally on Linux with ss -tulpn | grep ':20049\b', on Windows with netstat -ano | findstr :20049. To test a remote host use Test-NetConnection <host> -Port 20049 in PowerShell or nc -zv <host> 20049 on Linux/macOS.

How do I open port 20049 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 20049/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=20049/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 20049" -Direction Inbound -Protocol TCP -LocalPort 20049 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPnfsrdmaNetwork File System (NFS) over RDMA
UDPnfsrdmaNetwork File System (NFS) over RDMA
SCTPnfsrdmaNetwork File System (NFS) over RDMA

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