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Port 44322 (pmproxy)

IANA assigns port 44322 to pmproxy: PCP proxy (pmproxy).

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
pmproxy TCP PCP proxy (pmproxy) Performance Co-Pilot PCP Project -
pmproxy UDP PCP proxy (pmproxy) Performance Co-Pilot PCP Project -

Registry dates for this port: registered 2003-07, last modified 2025-09-26.

Check what is listening on port 44322

Linux: is anything listening on TCP 44322?
sudo ss -tlnp 'sport = :44322'
Linux: UDP 44322
sudo ss -ulnp 'sport = :44322'
Linux / macOS: which process owns the port
sudo lsof -nP -i :44322
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':44322 '
Windows (Command Prompt)
netstat -ano | findstr :44322
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 44322 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 44322
From Windows
Test-NetConnection HOST -Port 44322
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 44322

Block port 44322 in the firewall

ufw
sudo ufw deny 44322/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 44322 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 44322 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 44322' -Direction Inbound -Protocol TCP -LocalPort 44322 -Action Block
ufw
sudo ufw deny 44322/udp
iptables
sudo iptables -A INPUT -p udp --dport 44322 -j DROP
nftables
sudo nft add rule inet filter input udp dport 44322 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 44322' -Direction Inbound -Protocol UDP -LocalPort 44322 -Action Block

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