- 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.
Port 10439: BalanceNG session table synchronization protocol
Port 10439 is assigned by IANA to bngsync (BalanceNG session table synchronization protocol).
10439
How bngsync works
Other servicesThe client sends a request to port 10439 and the bngsync service answers.
- Transport
- 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
Is port 10439 dangerous?
We have no specific security note for port 10439. Its risk depends on the program actually listening on it. General advice for other services services:
IANA registry entries for port 10439
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| bngsync | 10439 | UDP | BalanceNG session table synchronization protocol | - | 2014-05-02 |
| - | 10439 | - | Reserved | - | - |
// source: IANA service name and port number registry
Which program uses port 10439, and is it reachable?
Linux
sudo ss -ltnup 'sport = :10439' # process listening on 10439
sudo lsof -nP -i :10439macOS
sudo lsof -nP -i :10439
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 10439 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 10439 netstat -ano | findstr :10439
From another machine
nmap -p 10439 -sV <host> sudo nmap -sU -p 10439 <host> nc -zv <host> 10439
Block it in the firewall
sudo ufw deny 10439/udp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 10439" -Direction Inbound -LocalPort 10439 -Protocol UDP -Action Block # Windows
What is port 10439 used for?
Port 10439 is assigned by IANA to bngsync (BalanceNG session table synchronization protocol).
Is port 10439 TCP or UDP?
Port 10439 is registered for UDP.
Is it safe to open port 10439?
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 10439 is open?
On Linux run "ss -ltnup 'sport = :10439'", on macOS "lsof -nP -i :10439", and on Windows "netstat -ano | findstr :10439" to see the local process. From another machine, "nmap -p 10439 <host>" shows whether it is reachable.
Other other services ports
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