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Port 22000 (snapenetio)

IANA assigns port 22000 to snapenetio: SNAPenetIO.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
snapenetio TCP SNAPenetIO Kevin Kuhns -
snapenetio UDP SNAPenetIO Kevin Kuhns -

Check what is listening on port 22000

Linux: is anything listening on TCP 22000?
sudo ss -tlnp 'sport = :22000'
Linux: UDP 22000
sudo ss -ulnp 'sport = :22000'
Linux / macOS: which process owns the port
sudo lsof -nP -i :22000
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':22000 '
Windows (Command Prompt)
netstat -ano | findstr :22000
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 22000 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 22000
From Windows
Test-NetConnection HOST -Port 22000
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 22000

Block port 22000 in the firewall

ufw
sudo ufw deny 22000/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 22000 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 22000 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 22000' -Direction Inbound -Protocol TCP -LocalPort 22000 -Action Block
ufw
sudo ufw deny 22000/udp
iptables
sudo iptables -A INPUT -p udp --dport 22000 -j DROP
nftables
sudo nft add rule inet filter input udp dport 22000 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 22000' -Direction Inbound -Protocol UDP -LocalPort 22000 -Action Block

Related ports

21848netspeak-acd21849netspeak-cps22001optocontrol22002optohost002

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