- 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 12865: control port for the netperf benchmark
Port 12865 is assigned by IANA to netperf (control port for the netperf benchmark).
12865
How netperf works
Other servicesThe client sends a request to port 12865 and the netperf 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
Is port 12865 dangerous?
We have no specific security note for port 12865. Its risk depends on the program actually listening on it. General advice for other services services:
IANA registry entries for port 12865
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| netperf | 12865 | TCP | control port for the netperf benchmark | - | 2013-04-05 |
| - | 12865 | - | Reserved | - | - |
// source: IANA service name and port number registry
Which program uses port 12865, and is it reachable?
Linux
sudo ss -ltnup 'sport = :12865' # process listening on 12865
sudo lsof -nP -i :12865macOS
sudo lsof -nP -i :12865
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 12865 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 12865 netstat -ano | findstr :12865
From another machine
nmap -p 12865 -sV <host> nc -zv <host> 12865
Block it in the firewall
sudo ufw deny 12865/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 12865" -Direction Inbound -LocalPort 12865 -Protocol TCP -Action Block # Windows
What is port 12865 used for?
Port 12865 is assigned by IANA to netperf (control port for the netperf benchmark).
Is port 12865 TCP or UDP?
Port 12865 is registered for TCP.
Is it safe to open port 12865?
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 12865 is open?
On Linux run "ss -ltnup 'sport = :12865'", on macOS "lsof -nP -i :12865", and on Windows "netstat -ano | findstr :12865" to see the local process. From another machine, "nmap -p 12865 <host>" shows whether it is reachable.
Other other services ports
:4444 Metasploit default / krb524 tcp · udp · high risk :31337 Back Orifice / elite tcp · udp · high risk :1 TCP Port Service Multiplexer tcp · udp :5 Remote Job Entry tcp · udp :9 Discard tcp · udp · sctp · dccp :11 Active Users tcp · udp :17 Quote of the Day tcp · udp :18 Message Send Protocol (historic) tcp · udp