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// Other services

Port 3846: Astare Network PCP

Port 3846 is assigned by IANA to an-pcp (Astare Network PCP).

3846

How an-pcp works

Other services
client:3846an-pcpresponse client:3846an-pcpresponse

The client sends a request to port 3846 and the an-pcp 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 3846 dangerous?

We have no specific security note for port 3846. 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 3846

ServicePortTransportDescriptionReferenceUpdated
an-pcp 3846 TCP, UDP Astare Network PCP - 2003-08

// source: IANA service name and port number registry

03 Check it

Which program uses port 3846, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3846'      # process listening on 3846
sudo lsof -nP -i :3846

macOS

sudo lsof -nP -i :3846

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3846 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3846
netstat -ano | findstr :3846

From another machine

nmap -p 3846 -sV <host>
sudo nmap -sU -p 3846 <host>
nc -zv <host> 3846

Block it in the firewall

sudo ufw deny 3846/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3846" -Direction Inbound -LocalPort 3846 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3846 used for?

Port 3846 is assigned by IANA to an-pcp (Astare Network PCP).

Is port 3846 TCP or UDP?

Port 3846 is registered for TCP and UDP.

Is it safe to open port 3846?

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 3846 is open?

On Linux run "ss -ltnup 'sport = :3846'", on macOS "lsof -nP -i :3846", and on Windows "netstat -ano | findstr :3846" to see the local process. From another machine, "nmap -p 3846 <host>" shows whether it is reachable.

05 Related
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