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// Other services

Port 2643: GTE-SAMP

Port 2643 is assigned by IANA to gte-samp (GTE-SAMP).

2643

How gte-samp works

Other services
client:2643gte-sampresponse client:2643gte-sampresponse

The client sends a request to port 2643 and the gte-samp 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 2643 dangerous?

We have no specific security note for port 2643. 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 2643

ServicePortTransportDescriptionReferenceUpdated
gte-samp 2643 TCP, UDP GTE-SAMP - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2643, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2643'      # process listening on 2643
sudo lsof -nP -i :2643

macOS

sudo lsof -nP -i :2643

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2643 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2643
netstat -ano | findstr :2643

From another machine

nmap -p 2643 -sV <host>
sudo nmap -sU -p 2643 <host>
nc -zv <host> 2643

Block it in the firewall

sudo ufw deny 2643/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2643" -Direction Inbound -LocalPort 2643 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2643 used for?

Port 2643 is assigned by IANA to gte-samp (GTE-SAMP).

Is port 2643 TCP or UDP?

Port 2643 is registered for TCP and UDP.

Is it safe to open port 2643?

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 2643 is open?

On Linux run "ss -ltnup 'sport = :2643'", on macOS "lsof -nP -i :2643", and on Windows "netstat -ano | findstr :2643" to see the local process. From another machine, "nmap -p 2643 <host>" shows whether it is reachable.

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