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// Other services

Port 2274: PCTTunneller

Port 2274 is assigned by IANA to pcttunnell (PCTTunneller).

2274

How pcttunnell works

Other services
client:2274pcttunnellresponse client:2274pcttunnellresponse

The client sends a request to port 2274 and the pcttunnell 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 2274 dangerous?

We have no specific security note for port 2274. 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 2274

ServicePortTransportDescriptionReferenceUpdated
pcttunnell 2274 TCP, UDP PCTTunneller - 2004-12

// source: IANA service name and port number registry

03 Check it

Which program uses port 2274, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2274'      # process listening on 2274
sudo lsof -nP -i :2274

macOS

sudo lsof -nP -i :2274

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2274 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2274
netstat -ano | findstr :2274

From another machine

nmap -p 2274 -sV <host>
sudo nmap -sU -p 2274 <host>
nc -zv <host> 2274

Block it in the firewall

sudo ufw deny 2274/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2274" -Direction Inbound -LocalPort 2274 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2274 used for?

Port 2274 is assigned by IANA to pcttunnell (PCTTunneller).

Is port 2274 TCP or UDP?

Port 2274 is registered for TCP and UDP.

Is it safe to open port 2274?

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 2274 is open?

On Linux run "ss -ltnup 'sport = :2274'", on macOS "lsof -nP -i :2274", and on Windows "netstat -ano | findstr :2274" to see the local process. From another machine, "nmap -p 2274 <host>" shows whether it is reachable.

05 Related
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