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// Other services

Port 2785: aic-np

Port 2785 is assigned by IANA to aic-np (aic-np).

2785

How aic-np works

Other services
client:2785aic-npresponse client:2785aic-npresponse

The client sends a request to port 2785 and the aic-np 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 2785 dangerous?

We have no specific security note for port 2785. 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 2785

ServicePortTransportDescriptionReferenceUpdated
aic-np 2785 TCP, UDP aic-np - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2785, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2785'      # process listening on 2785
sudo lsof -nP -i :2785

macOS

sudo lsof -nP -i :2785

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2785 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2785
netstat -ano | findstr :2785

From another machine

nmap -p 2785 -sV <host>
sudo nmap -sU -p 2785 <host>
nc -zv <host> 2785

Block it in the firewall

sudo ufw deny 2785/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2785" -Direction Inbound -LocalPort 2785 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2785 used for?

Port 2785 is assigned by IANA to aic-np (aic-np).

Is port 2785 TCP or UDP?

Port 2785 is registered for TCP and UDP.

Is it safe to open port 2785?

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 2785 is open?

On Linux run "ss -ltnup 'sport = :2785'", on macOS "lsof -nP -i :2785", and on Windows "netstat -ano | findstr :2785" to see the local process. From another machine, "nmap -p 2785 <host>" shows whether it is reachable.

05 Related
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