Port 5993 (cim-rs)

IANA assigns port 5993 to cim-rs: DMTF WBEM CIM REST.

Registered (user) port, 1024-49151 TCP

IANA assignment

Service nameProtoDescriptionAssigneeReference

cim-rs TCP DMTF WBEM CIM REST WS Inc -

Registry dates for this port: registered 2015-04-24.

Linux: is anything listening on TCP 5993?

sudo ss -tlnp 'sport = :5993'

Linux / macOS: which process owns the port

sudo lsof -nP -i :5993

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':5993 '

Windows (Command Prompt)

netstat -ano | findstr :5993

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 5993 -State Listen | Select LocalAddress,OwningProcess

From another machine

nc -vz -w 5 HOST 5993

From Windows

Test-NetConnection HOST -Port 5993

ufw

sudo ufw deny 5993/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 5993 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 5993 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 5993' -Direction Inbound -Protocol TCP -LocalPort 5993 -Action Block

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