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Port 4185 (wcpp)

IANA assigns port 4185 to wcpp: Woven Control Plane Protocol.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
wcpp TCP Woven Control Plane Protocol Christopher LILJENST -
wcpp UDP Woven Control Plane Protocol Christopher LILJENST -

Registry dates for this port: registered 2008-04-14.

Check what is listening on port 4185

Linux: is anything listening on TCP 4185?
sudo ss -tlnp 'sport = :4185'
Linux: UDP 4185
sudo ss -ulnp 'sport = :4185'
Linux / macOS: which process owns the port
sudo lsof -nP -i :4185
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':4185 '
Windows (Command Prompt)
netstat -ano | findstr :4185
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 4185 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 4185
From Windows
Test-NetConnection HOST -Port 4185
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 4185

Block port 4185 in the firewall

ufw
sudo ufw deny 4185/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 4185 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 4185 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 4185' -Direction Inbound -Protocol TCP -LocalPort 4185 -Action Block
ufw
sudo ufw deny 4185/udp
iptables
sudo iptables -A INPUT -p udp --dport 4185 -j DROP
nftables
sudo nft add rule inet filter input udp dport 4185 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 4185' -Direction Inbound -Protocol UDP -LocalPort 4185 -Action Block

Related ports

4183cyborgnet4184universe-suite, universe_suite4186boxbackupstore4187csc-proxy, csc_proxy

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