- 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 8016: Beckhoff Automation Device Specification
Port 8016 is assigned by IANA to ads-s (Beckhoff Automation Device Specification).
8016
How ads-s works
Other servicesThe client sends a request to port 8016 and the ads-s 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 8016 dangerous?
We have no specific security note for port 8016. Its risk depends on the program actually listening on it. General advice for other services services:
IANA registry entries for port 8016
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| ads-s | 8016 | TCP | Beckhoff Automation Device Specification | - | 2019-02-28 |
| - | 8016 | - | Reserved | - | - |
// source: IANA service name and port number registry
Which program uses port 8016, and is it reachable?
Linux
sudo ss -ltnup 'sport = :8016' # process listening on 8016
sudo lsof -nP -i :8016macOS
sudo lsof -nP -i :8016
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 8016 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 8016 netstat -ano | findstr :8016
From another machine
nmap -p 8016 -sV <host> nc -zv <host> 8016
Block it in the firewall
sudo ufw deny 8016/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 8016" -Direction Inbound -LocalPort 8016 -Protocol TCP -Action Block # Windows
What is port 8016 used for?
Port 8016 is assigned by IANA to ads-s (Beckhoff Automation Device Specification).
Is port 8016 TCP or UDP?
Port 8016 is registered for TCP.
Is it safe to open port 8016?
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 8016 is open?
On Linux run "ss -ltnup 'sport = :8016'", on macOS "lsof -nP -i :8016", and on Windows "netstat -ano | findstr :8016" to see the local process. From another machine, "nmap -p 8016 <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