Port 6784

bfd-lag · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Servicebfd-lag
ReferenceRFC 7130
Registered2012-11-08
Modified2014-01-09

Frequently asked questions

What is port 6784 used for?

Port 6784 is registered with the IANA for bfd-lag (TCP/UDP). Description: Reserved; Bidirectional Forwarding Detection (BFD) on Link Aggregation Group (LAG) Interfaces.

Is port 6784 a well-known port?

No. Port 6784 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 6784 is open?

Locally on Linux with ss -tulpn | grep ':6784\b', on Windows with netstat -ano | findstr :6784. To test a remote host use Test-NetConnection <host> -Port 6784 in PowerShell or nc -zv <host> 6784 on Linux/macOS.

How do I open port 6784 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 6784/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=6784/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 6784" -Direction Inbound -Protocol TCP -LocalPort 6784 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCP–Reserved
UDPbfd-lagBidirectional Forwarding Detection (BFD) on Link Aggregation Group (LAG) Interfaces

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