CyberHunter
Local dataset, no network
// Other services

Port 7845: APC 7845

Port 7845 is assigned by IANA to apc-7845 (APC 7845).

7845

How apc-7845 works

Other services
client:7845apc-7845response client:7845apc-7845response

The client sends a request to port 7845 and the apc-7845 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 7845 dangerous?

We have no specific security note for port 7845. 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 7845

ServicePortTransportDescriptionReferenceUpdated
apc-7845 7845 TCP, UDP APC 7845 - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 7845, and is it reachable?

Linux

sudo ss -ltnup 'sport = :7845'      # process listening on 7845
sudo lsof -nP -i :7845

macOS

sudo lsof -nP -i :7845

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 7845 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 7845
netstat -ano | findstr :7845

From another machine

nmap -p 7845 -sV <host>
sudo nmap -sU -p 7845 <host>
nc -zv <host> 7845

Block it in the firewall

sudo ufw deny 7845/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 7845" -Direction Inbound -LocalPort 7845 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 7845 used for?

Port 7845 is assigned by IANA to apc-7845 (APC 7845).

Is port 7845 TCP or UDP?

Port 7845 is registered for TCP and UDP.

Is it safe to open port 7845?

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 7845 is open?

On Linux run "ss -ltnup 'sport = :7845'", on macOS "lsof -nP -i :7845", and on Windows "netstat -ano | findstr :7845" to see the local process. From another machine, "nmap -p 7845 <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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