Port 22351 (codemeter-cmwan)

IANA assigns port 22351 to codemeter-cmwan: TPC/IP requests of copy protection software to a server.

Registered (user) port, 1024-49151 TCP

IANA assignment

Service nameProtoDescriptionAssigneeReference

codemeter-cmwan TCP TPC/IP requests of copy protection software to a server WIBU-SYSTEMS AG -

Registry dates for this port: registered 2013-06-25.

Linux: is anything listening on TCP 22351?

sudo ss -tlnp 'sport = :22351'

Linux / macOS: which process owns the port

sudo lsof -nP -i :22351

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':22351 '

Windows (Command Prompt)

netstat -ano | findstr :22351

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 22351 -State Listen | Select LocalAddress,OwningProcess

From another machine

nc -vz -w 5 HOST 22351

From Windows

Test-NetConnection HOST -Port 22351

ufw

sudo ufw deny 22351/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 22351 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 22351 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 22351' -Direction Inbound -Protocol TCP -LocalPort 22351 -Action Block

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Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.