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// Other services

Port 7742: Mugginsoft Script Server Service

Port 7742 is assigned by IANA to msss (Mugginsoft Script Server Service).

7742

How msss works

Other services
client:7742msssresponse client:7742msssresponse

The client sends a request to port 7742 and the msss service answers.

Transport
TCP
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 7742 dangerous?

We have no specific security note for port 7742. 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 7742

ServicePortTransportDescriptionReferenceUpdated
msss 7742 TCP Mugginsoft Script Server Service - 2008-09-08
-7742-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 7742, and is it reachable?

Linux

sudo ss -ltnup 'sport = :7742'      # process listening on 7742
sudo lsof -nP -i :7742

macOS

sudo lsof -nP -i :7742

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 7742 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 7742
netstat -ano | findstr :7742

From another machine

nmap -p 7742 -sV <host>
nc -zv <host> 7742

Block it in the firewall

sudo ufw deny 7742/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 7742" -Direction Inbound -LocalPort 7742 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 7742 used for?

Port 7742 is assigned by IANA to msss (Mugginsoft Script Server Service).

Is port 7742 TCP or UDP?

Port 7742 is registered for TCP.

Is it safe to open port 7742?

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 7742 is open?

On Linux run "ss -ltnup 'sport = :7742'", on macOS "lsof -nP -i :7742", and on Windows "netstat -ano | findstr :7742" to see the local process. From another machine, "nmap -p 7742 <host>" shows whether it is reachable.

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