Port 2301 (cpq-wbem)

IANA assigns port 2301 to cpq-wbem: Compaq HTTP.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference

cpq-wbem TCP Compaq HTTP Scott Shaffer -

cpq-wbem UDP Compaq HTTP Scott Shaffer -

Linux: is anything listening on TCP 2301?

sudo ss -tlnp 'sport = :2301'

Linux: UDP 2301

sudo ss -ulnp 'sport = :2301'

Linux / macOS: which process owns the port

sudo lsof -nP -i :2301

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':2301 '

Windows (Command Prompt)

netstat -ano | findstr :2301

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2301 -State Listen | Select LocalAddress,OwningProcess

From another machine

nc -vz -w 5 HOST 2301

From Windows

Test-NetConnection HOST -Port 2301

UDP probe (no reply does not prove it is closed)

nc -vzu -w 5 HOST 2301

ufw

sudo ufw deny 2301/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 2301 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 2301 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 2301' -Direction Inbound -Protocol TCP -LocalPort 2301 -Action Block

ufw

sudo ufw deny 2301/udp

iptables

sudo iptables -A INPUT -p udp --dport 2301 -j DROP

nftables

sudo nft add rule inet filter input udp dport 2301 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block UDP 2301' -Direction Inbound -Protocol UDP -LocalPort 2301 -Action Block

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