CyberHunter
Local dataset, no network
// Other services

Port 12012: Vipera Messaging Service

Port 12012 is assigned by IANA to vipera (Vipera Messaging Service).

12012

How vipera works

Other services
client:12012viperaresponse client:12012viperaresponse

The client sends a request to port 12012 and the vipera 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 12012 dangerous?

We have no specific security note for port 12012. 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 12012

ServicePortTransportDescriptionReferenceUpdated
vipera 12012 TCP, UDP Vipera Messaging Service - 2005-08

// source: IANA service name and port number registry

03 Check it

Which program uses port 12012, and is it reachable?

Linux

sudo ss -ltnup 'sport = :12012'      # process listening on 12012
sudo lsof -nP -i :12012

macOS

sudo lsof -nP -i :12012

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 12012 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 12012
netstat -ano | findstr :12012

From another machine

nmap -p 12012 -sV <host>
sudo nmap -sU -p 12012 <host>
nc -zv <host> 12012

Block it in the firewall

sudo ufw deny 12012/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 12012" -Direction Inbound -LocalPort 12012 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 12012 used for?

Port 12012 is assigned by IANA to vipera (Vipera Messaging Service).

Is port 12012 TCP or UDP?

Port 12012 is registered for TCP and UDP.

Is it safe to open port 12012?

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 12012 is open?

On Linux run "ss -ltnup 'sport = :12012'", on macOS "lsof -nP -i :12012", and on Windows "netstat -ano | findstr :12012" to see the local process. From another machine, "nmap -p 12012 <host>" shows whether it is reachable.

05 Related
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