Port 3487

ltctcp and ltcudp · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Serviceltctcp and ltcudp
Registered2002-05

Frequently asked questions

What is port 3487 used for?

Port 3487 is registered with the IANA for ltctcp and ltcudp (TCP/UDP). Description: LISA TCP Transfer Channel; LISA UDP Transfer Channel.

Is port 3487 a well-known port?

No. Port 3487 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 3487 is open?

Locally on Linux with ss -tulpn | grep ':3487\b', on Windows with netstat -ano | findstr :3487. To test a remote host use Test-NetConnection <host> -Port 3487 in PowerShell or nc -zv <host> 3487 on Linux/macOS.

How do I open port 3487 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 3487/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=3487/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 3487" -Direction Inbound -Protocol TCP -LocalPort 3487 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPltctcpLISA TCP Transfer Channel
UDPltcudpLISA UDP Transfer Channel

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