Port 1557

arbortext-lm · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Servicearbortext-lm

Frequently asked questions

What is port 1557 used for?

Port 1557 is registered with the IANA for arbortext-lm (TCP/UDP). Description: ArborText License Manager.

Is port 1557 a well-known port?

No. Port 1557 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 1557 is open?

Locally on Linux with ss -tulpn | grep ':1557\b', on Windows with netstat -ano | findstr :1557. To test a remote host use Test-NetConnection <host> -Port 1557 in PowerShell or nc -zv <host> 1557 on Linux/macOS.

How do I open port 1557 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 1557/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=1557/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 1557" -Direction Inbound -Protocol TCP -LocalPort 1557 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCParbortext-lmArborText License Manager
UDParbortext-lmArborText License Manager

Nearby entries