Port 5868

diameters · SCTP/TCP/UDP

RangeRegistered port (1024–49151)
ProtocolSCTP/TCP/UDP
Servicediameters
ReferenceRFC 6733

Frequently asked questions

What is port 5868 used for?

Port 5868 is registered with the IANA for diameters (SCTP/TCP/UDP). Description: Diameter over TLS/TCP; Reserved; Diameter over DTLS/SCTP.

Is port 5868 a well-known port?

No. Port 5868 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 5868 is open?

Locally on Linux with ss -tulpn | grep ':5868\b', on Windows with netstat -ano | findstr :5868. To test a remote host use Test-NetConnection <host> -Port 5868 in PowerShell or nc -zv <host> 5868 on Linux/macOS.

How do I open port 5868 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 5868/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=5868/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 5868" -Direction Inbound -Protocol TCP -LocalPort 5868 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPdiametersDiameter over TLS/TCP
UDP–Reserved
SCTPdiametersDiameter over DTLS/SCTP

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