- 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 2020:
Port 2020 is assigned by IANA to xinupageserver ().
2020
How xinupageserver works
Other servicesThe client sends a request to port 2020 and the xinupageserver 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
Is port 2020 dangerous?
We have no specific security note for port 2020. Its risk depends on the program actually listening on it. General advice for other services services:
IANA registry entries for port 2020
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| xinupageserver | 2020 | TCP, UDP | - | - |
// source: IANA service name and port number registry
Which program uses port 2020, and is it reachable?
Linux
sudo ss -ltnup 'sport = :2020' # process listening on 2020
sudo lsof -nP -i :2020macOS
sudo lsof -nP -i :2020
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2020 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 2020 netstat -ano | findstr :2020
From another machine
nmap -p 2020 -sV <host> sudo nmap -sU -p 2020 <host> nc -zv <host> 2020
Block it in the firewall
sudo ufw deny 2020/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 2020" -Direction Inbound -LocalPort 2020 -Protocol TCP -Action Block # Windows
What is port 2020 used for?
Port 2020 is assigned by IANA to xinupageserver ().
Is port 2020 TCP or UDP?
Port 2020 is registered for TCP and UDP.
Is it safe to open port 2020?
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 2020 is open?
On Linux run "ss -ltnup 'sport = :2020'", on macOS "lsof -nP -i :2020", and on Windows "netstat -ano | findstr :2020" to see the local process. From another machine, "nmap -p 2020 <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