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// Other services

Port 2958: JAMCT6

Port 2958 is assigned by IANA to jmact6 (JAMCT6).

2958

How jmact6 works

Other services
client:2958jmact6response client:2958jmact6response

The client sends a request to port 2958 and the jmact6 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 2958 dangerous?

We have no specific security note for port 2958. 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 2958

ServicePortTransportDescriptionReferenceUpdated
jmact6 2958 TCP, UDP JAMCT6 - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2958, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2958'      # process listening on 2958
sudo lsof -nP -i :2958

macOS

sudo lsof -nP -i :2958

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2958 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2958
netstat -ano | findstr :2958

From another machine

nmap -p 2958 -sV <host>
sudo nmap -sU -p 2958 <host>
nc -zv <host> 2958

Block it in the firewall

sudo ufw deny 2958/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2958" -Direction Inbound -LocalPort 2958 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2958 used for?

Port 2958 is assigned by IANA to jmact6 (JAMCT6).

Is port 2958 TCP or UDP?

Port 2958 is registered for TCP and UDP.

Is it safe to open port 2958?

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 2958 is open?

On Linux run "ss -ltnup 'sport = :2958'", on macOS "lsof -nP -i :2958", and on Windows "netstat -ano | findstr :2958" to see the local process. From another machine, "nmap -p 2958 <host>" shows whether it is reachable.

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