- 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 2012:
Port 2012 is assigned by IANA to raid-ac (), ttyinfo ().
2012
How raid-ac works
Other servicesThe client sends a request to port 2012 and the raid-ac service answers.
- Transport
- UDP · TCP
- Exposure risk
- not rated depends on the program listening
- Encryption
- Unknownnot stated by the registry
- IANA status
- Assigned2 registered services
- Range
- Registered (1024-49151)
- Category
- Other services
Is port 2012 dangerous?
We have no specific security note for port 2012. Its risk depends on the program actually listening on it. General advice for other services services:
IANA registry entries for port 2012
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| raid-ac | 2012 | UDP | - | - | |
| ttyinfo | 2012 | TCP | - | - |
// source: IANA service name and port number registry
Which program uses port 2012, and is it reachable?
Linux
sudo ss -ltnup 'sport = :2012' # process listening on 2012
sudo lsof -nP -i :2012macOS
sudo lsof -nP -i :2012
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2012 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 2012 netstat -ano | findstr :2012
From another machine
nmap -p 2012 -sV <host> sudo nmap -sU -p 2012 <host> nc -zv <host> 2012
Block it in the firewall
sudo ufw deny 2012/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 2012" -Direction Inbound -LocalPort 2012 -Protocol TCP -Action Block # Windows
What is port 2012 used for?
Port 2012 is assigned by IANA to raid-ac (), ttyinfo ().
Is port 2012 TCP or UDP?
Port 2012 is registered for UDP and TCP.
Is it safe to open port 2012?
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 2012 is open?
On Linux run "ss -ltnup 'sport = :2012'", on macOS "lsof -nP -i :2012", and on Windows "netstat -ano | findstr :2012" to see the local process. From another machine, "nmap -p 2012 <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