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// Other services

Port 3618: AAIR-Network 1

Port 3618 is assigned by IANA to aairnet-1 (AAIR-Network 1).

3618

How aairnet-1 works

Other services
client:3618aairnet-1response client:3618aairnet-1response

The client sends a request to port 3618 and the aairnet-1 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 3618 dangerous?

We have no specific security note for port 3618. 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 3618

ServicePortTransportDescriptionReferenceUpdated
aairnet-1 3618 TCP, UDP AAIR-Network 1 - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 3618, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3618'      # process listening on 3618
sudo lsof -nP -i :3618

macOS

sudo lsof -nP -i :3618

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3618 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3618
netstat -ano | findstr :3618

From another machine

nmap -p 3618 -sV <host>
sudo nmap -sU -p 3618 <host>
nc -zv <host> 3618

Block it in the firewall

sudo ufw deny 3618/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3618" -Direction Inbound -LocalPort 3618 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3618 used for?

Port 3618 is assigned by IANA to aairnet-1 (AAIR-Network 1).

Is port 3618 TCP or UDP?

Port 3618 is registered for TCP and UDP.

Is it safe to open port 3618?

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 3618 is open?

On Linux run "ss -ltnup 'sport = :3618'", on macOS "lsof -nP -i :3618", and on Windows "netstat -ano | findstr :3618" to see the local process. From another machine, "nmap -p 3618 <host>" shows whether it is reachable.

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