CyberHunter
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// Other services

Port 7846: APC 7846

Port 7846 is assigned by IANA to apc-7846 (APC 7846).

7846

How apc-7846 works

Other services
client:7846apc-7846response client:7846apc-7846response

The client sends a request to port 7846 and the apc-7846 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 7846 dangerous?

We have no specific security note for port 7846. 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 7846

ServicePortTransportDescriptionReferenceUpdated
apc-7846 7846 TCP, UDP APC 7846 - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 7846, and is it reachable?

Linux

sudo ss -ltnup 'sport = :7846'      # process listening on 7846
sudo lsof -nP -i :7846

macOS

sudo lsof -nP -i :7846

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 7846 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 7846
netstat -ano | findstr :7846

From another machine

nmap -p 7846 -sV <host>
sudo nmap -sU -p 7846 <host>
nc -zv <host> 7846

Block it in the firewall

sudo ufw deny 7846/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 7846" -Direction Inbound -LocalPort 7846 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 7846 used for?

Port 7846 is assigned by IANA to apc-7846 (APC 7846).

Is port 7846 TCP or UDP?

Port 7846 is registered for TCP and UDP.

Is it safe to open port 7846?

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 7846 is open?

On Linux run "ss -ltnup 'sport = :7846'", on macOS "lsof -nP -i :7846", and on Windows "netstat -ano | findstr :7846" to see the local process. From another machine, "nmap -p 7846 <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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