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Port 10020 (abb-hw)

IANA assigns port 10020 to abb-hw: Hardware configuration and maintenance.

Registered (user) port, 1024-49151 TCP

IANA assignment

Service nameProtoDescriptionAssigneeReference
abb-hw TCP Hardware configuration and maintenance ABB -

Registry dates for this port: registered 2017-03-28.

Check what is listening on port 10020

Linux: is anything listening on TCP 10020?
sudo ss -tlnp 'sport = :10020'
Linux / macOS: which process owns the port
sudo lsof -nP -i :10020
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':10020 '
Windows (Command Prompt)
netstat -ano | findstr :10020
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 10020 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 10020
From Windows
Test-NetConnection HOST -Port 10020

Block port 10020 in the firewall

ufw
sudo ufw deny 10020/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 10020 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 10020 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 10020' -Direction Inbound -Protocol TCP -LocalPort 10020 -Action Block

Related ports

10009swdtp-sv10010rxapi10023cefd-vmp10050Zabbix agent

All port numbers · Open port checker
Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.