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// Other services

Port 1452: GTE Government Systems License Man

Port 1452 is assigned by IANA to gtegsc-lm (GTE Government Systems License Man).

1452

How gtegsc-lm works

Other services
client:1452gtegsc-lmresponse client:1452gtegsc-lmresponse

The client sends a request to port 1452 and the gtegsc-lm service answers.

Transport
TCP · UDP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned1 registered service
Range
Registered (1024-49151)
Category
Other services
01 Security

Is port 1452 dangerous?

We have no specific security note for port 1452. Its risk depends on the program actually listening on it. General advice for other services services:

  • Close the port if nothing on the host needs it.
  • Identify the process that listens on it (commands below) before opening it in a firewall.
  • Expose a service only to the networks that use it.
02 Registry

IANA registry entries for port 1452

ServicePortTransportDescriptionReferenceUpdated
gtegsc-lm 1452 TCP, UDP GTE Government Systems License Man - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1452, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1452'      # process listening on 1452
sudo lsof -nP -i :1452

macOS

sudo lsof -nP -i :1452

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1452 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1452
netstat -ano | findstr :1452

From another machine

nmap -p 1452 -sV <host>
sudo nmap -sU -p 1452 <host>
nc -zv <host> 1452

Block it in the firewall

sudo ufw deny 1452/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1452" -Direction Inbound -LocalPort 1452 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1452 used for?

Port 1452 is assigned by IANA to gtegsc-lm (GTE Government Systems License Man).

Is port 1452 TCP or UDP?

Port 1452 is registered for TCP and UDP.

Is it safe to open port 1452?

It depends on the program that listens on it. Open it only for a service you know and only to the networks that need it. Close the port if nothing on the host needs it.

How do I check if port 1452 is open?

On Linux run "ss -ltnup 'sport = :1452'", on macOS "lsof -nP -i :1452", and on Windows "netstat -ano | findstr :1452" to see the local process. From another machine, "nmap -p 1452 <host>" shows whether it is reachable.

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