CyberHunter
Local dataset, no network
// Other services

Port 8445: Port for copy peer sync feature

Port 8445 is assigned by IANA to copy (Port for copy peer sync feature), copy-disc (Port for copy discovery).

8445

How copy works

Other services
client:8445copyresponse client:8445copyresponse

The client sends a request to port 8445 and the copy service answers.

Transport
TCP · UDP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned2 registered services
Range
Registered (1024-49151)
Category
Other services
01 Security

Is port 8445 dangerous?

We have no specific security note for port 8445. 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 8445

ServicePortTransportDescriptionReferenceUpdated
copy 8445 TCP Port for copy peer sync feature - 2012-09-19
copy-disc 8445 UDP Port for copy discovery - 2012-09-19

// source: IANA service name and port number registry

03 Check it

Which program uses port 8445, and is it reachable?

Linux

sudo ss -ltnup 'sport = :8445'      # process listening on 8445
sudo lsof -nP -i :8445

macOS

sudo lsof -nP -i :8445

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 8445 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 8445
netstat -ano | findstr :8445

From another machine

nmap -p 8445 -sV <host>
sudo nmap -sU -p 8445 <host>
nc -zv <host> 8445

Block it in the firewall

sudo ufw deny 8445/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 8445" -Direction Inbound -LocalPort 8445 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 8445 used for?

Port 8445 is assigned by IANA to copy (Port for copy peer sync feature), copy-disc (Port for copy discovery).

Is port 8445 TCP or UDP?

Port 8445 is registered for TCP and UDP.

Is it safe to open port 8445?

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 8445 is open?

On Linux run "ss -ltnup 'sport = :8445'", on macOS "lsof -nP -i :8445", and on Windows "netstat -ano | findstr :8445" to see the local process. From another machine, "nmap -p 8445 <host>" shows whether it is reachable.

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