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Port 4005 (pxc-pin)

IANA assigns port 4005 to pxc-pin.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
pxc-pin TCP pxc-pin - -
pxc-pin UDP pxc-pin - -

Check what is listening on port 4005

Linux: is anything listening on TCP 4005?
sudo ss -tlnp 'sport = :4005'
Linux: UDP 4005
sudo ss -ulnp 'sport = :4005'
Linux / macOS: which process owns the port
sudo lsof -nP -i :4005
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':4005 '
Windows (Command Prompt)
netstat -ano | findstr :4005
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 4005 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 4005
From Windows
Test-NetConnection HOST -Port 4005
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 4005

Block port 4005 in the firewall

ufw
sudo ufw deny 4005/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 4005 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 4005 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 4005' -Direction Inbound -Protocol TCP -LocalPort 4005 -Action Block
ufw
sudo ufw deny 4005/udp
iptables
sudo iptables -A INPUT -p udp --dport 4005 -j DROP
nftables
sudo nft add rule inet filter input udp dport 4005 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 4005' -Direction Inbound -Protocol UDP -LocalPort 4005 -Action Block

Related ports

4003pxc-splr-ft4004pxc-roid4006pxc-spvr4007pxc-splr

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