- 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.
Port 2022:
Port 2022 is assigned by IANA to down (), xinuexpansion2 ().
2022
How down works
Other servicesThe client sends a request to port 2022 and the down 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
Is port 2022 dangerous?
We have no specific security note for port 2022. Its risk depends on the program actually listening on it. General advice for other services services:
IANA registry entries for port 2022
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| down | 2022 | TCP | - | - | |
| xinuexpansion2 | 2022 | UDP | - | - |
// source: IANA service name and port number registry
Which program uses port 2022, and is it reachable?
Linux
sudo ss -ltnup 'sport = :2022' # process listening on 2022
sudo lsof -nP -i :2022macOS
sudo lsof -nP -i :2022
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2022 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 2022 netstat -ano | findstr :2022
From another machine
nmap -p 2022 -sV <host> sudo nmap -sU -p 2022 <host> nc -zv <host> 2022
Block it in the firewall
sudo ufw deny 2022/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 2022" -Direction Inbound -LocalPort 2022 -Protocol TCP -Action Block # Windows
What is port 2022 used for?
Port 2022 is assigned by IANA to down (), xinuexpansion2 ().
Is port 2022 TCP or UDP?
Port 2022 is registered for TCP and UDP.
Is it safe to open port 2022?
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 2022 is open?
On Linux run "ss -ltnup 'sport = :2022'", on macOS "lsof -nP -i :2022", and on Windows "netstat -ano | findstr :2022" to see the local process. From another machine, "nmap -p 2022 <host>" shows whether it is reachable.
Other other services ports
: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