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// Other services

Port 4702: NetXMS Server Synchronization

Port 4702 is assigned by IANA to netxms-sync (NetXMS Server Synchronization).

4702

How netxms-sync works

Other services
client:4702netxms-syncresponse client:4702netxms-syncresponse

The client sends a request to port 4702 and the netxms-sync 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 4702 dangerous?

We have no specific security note for port 4702. 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 4702

ServicePortTransportDescriptionReferenceUpdated
netxms-sync 4702 TCP, UDP NetXMS Server Synchronization - 2006-07

// source: IANA service name and port number registry

03 Check it

Which program uses port 4702, and is it reachable?

Linux

sudo ss -ltnup 'sport = :4702'      # process listening on 4702
sudo lsof -nP -i :4702

macOS

sudo lsof -nP -i :4702

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 4702 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 4702
netstat -ano | findstr :4702

From another machine

nmap -p 4702 -sV <host>
sudo nmap -sU -p 4702 <host>
nc -zv <host> 4702

Block it in the firewall

sudo ufw deny 4702/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 4702" -Direction Inbound -LocalPort 4702 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 4702 used for?

Port 4702 is assigned by IANA to netxms-sync (NetXMS Server Synchronization).

Is port 4702 TCP or UDP?

Port 4702 is registered for TCP and UDP.

Is it safe to open port 4702?

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 4702 is open?

On Linux run "ss -ltnup 'sport = :4702'", on macOS "lsof -nP -i :4702", and on Windows "netstat -ano | findstr :4702" to see the local process. From another machine, "nmap -p 4702 <host>" shows whether it is reachable.

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