CyberHunter
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// Other services

Port 47806: ALC Protocol

Port 47806 is assigned by IANA to ap (ALC Protocol).

47806

How ap works

Other services
client:47806apresponse client:47806apresponse

The client sends a request to port 47806 and the ap 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 47806 dangerous?

We have no specific security note for port 47806. 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 47806

ServicePortTransportDescriptionReferenceUpdated
ap 47806 TCP, UDP ALC Protocol - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 47806, and is it reachable?

Linux

sudo ss -ltnup 'sport = :47806'      # process listening on 47806
sudo lsof -nP -i :47806

macOS

sudo lsof -nP -i :47806

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 47806 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 47806
netstat -ano | findstr :47806

From another machine

nmap -p 47806 -sV <host>
sudo nmap -sU -p 47806 <host>
nc -zv <host> 47806

Block it in the firewall

sudo ufw deny 47806/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 47806" -Direction Inbound -LocalPort 47806 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 47806 used for?

Port 47806 is assigned by IANA to ap (ALC Protocol).

Is port 47806 TCP or UDP?

Port 47806 is registered for TCP and UDP.

Is it safe to open port 47806?

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 47806 is open?

On Linux run "ss -ltnup 'sport = :47806'", on macOS "lsof -nP -i :47806", and on Windows "netstat -ano | findstr :47806" to see the local process. From another machine, "nmap -p 47806 <host>" shows whether it is reachable.

05 Related
: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

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