Port 5583

tmo-icon-sync · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Servicetmo-icon-sync
Registered2008-01-22

Frequently asked questions

What is port 5583 used for?

Port 5583 is registered with the IANA for tmo-icon-sync (TCP/UDP). Description: T-Mobile SMS Protocol Message 2.

Is port 5583 a well-known port?

No. Port 5583 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 5583 is open?

Locally on Linux with ss -tulpn | grep ':5583\b', on Windows with netstat -ano | findstr :5583. To test a remote host use Test-NetConnection <host> -Port 5583 in PowerShell or nc -zv <host> 5583 on Linux/macOS.

How do I open port 5583 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 5583/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=5583/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 5583" -Direction Inbound -Protocol TCP -LocalPort 5583 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPtmo-icon-syncT-Mobile SMS Protocol Message 2
UDPtmo-icon-syncT-Mobile SMS Protocol Message 2

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