Port 18634

rds-ib · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Servicerds-ib
Registered2009-02-27

Frequently asked questions

What is port 18634 used for?

Port 18634 is registered with the IANA for rds-ib (TCP/UDP). Description: Reliable Datagram Service.

Is port 18634 a well-known port?

No. Port 18634 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 18634 is open?

Locally on Linux with ss -tulpn | grep ':18634\b', on Windows with netstat -ano | findstr :18634. To test a remote host use Test-NetConnection <host> -Port 18634 in PowerShell or nc -zv <host> 18634 on Linux/macOS.

How do I open port 18634 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 18634/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=18634/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 18634" -Direction Inbound -Protocol TCP -LocalPort 18634 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPrds-ibReliable Datagram Service
UDPrds-ibReliable Datagram Service

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