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// Other services

Port 3642: Juxml Replication port

Port 3642 is assigned by IANA to juxml-port (Juxml Replication port).

3642

How juxml-port works

Other services
client:3642juxml-portresponse client:3642juxml-portresponse

The client sends a request to port 3642 and the juxml-port 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 3642 dangerous?

We have no specific security note for port 3642. 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 3642

ServicePortTransportDescriptionReferenceUpdated
juxml-port 3642 TCP, UDP Juxml Replication port - 2002-11

// source: IANA service name and port number registry

03 Check it

Which program uses port 3642, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3642'      # process listening on 3642
sudo lsof -nP -i :3642

macOS

sudo lsof -nP -i :3642

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3642 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3642
netstat -ano | findstr :3642

From another machine

nmap -p 3642 -sV <host>
sudo nmap -sU -p 3642 <host>
nc -zv <host> 3642

Block it in the firewall

sudo ufw deny 3642/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3642" -Direction Inbound -LocalPort 3642 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3642 used for?

Port 3642 is assigned by IANA to juxml-port (Juxml Replication port).

Is port 3642 TCP or UDP?

Port 3642 is registered for TCP and UDP.

Is it safe to open port 3642?

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 3642 is open?

On Linux run "ss -ltnup 'sport = :3642'", on macOS "lsof -nP -i :3642", and on Windows "netstat -ano | findstr :3642" to see the local process. From another machine, "nmap -p 3642 <host>" shows whether it is reachable.

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