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Port 36411 (wlcp)

IANA assigns port 36411 to wlcp: Wireless LAN Control plane Protocol (WLCP).

Registered (user) port, 1024-49151 UDP

Port 36411 is normally used over UDP; the checker tests TCP only, so a "filtered" result does not mean the UDP service is down.

IANA assignment

Service nameProtoDescriptionAssigneeReference
wlcp UDP Wireless LAN Control plane Protocol (WLCP) 3GPP -

Registry dates for this port: registered 2014-11-14, last modified 2026-01-23.

Check what is listening on port 36411

Linux: UDP 36411
sudo ss -ulnp 'sport = :36411'
Linux / macOS: which process owns the port
sudo lsof -nP -i :36411
Windows (Command Prompt)
netstat -ano | findstr :36411
Windows (PowerShell)
Get-NetUDPEndpoint -LocalPort 36411

Test it from outside

UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 36411

Block port 36411 in the firewall

ufw
sudo ufw deny 36411/udp
iptables
sudo iptables -A INPUT -p udp --dport 36411 -j DROP
nftables
sudo nft add rule inet filter input udp dport 36411 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 36411' -Direction Inbound -Protocol UDP -LocalPort 36411 -Action Block

Related ports

35357openstack-id36001allpeers36412s1-control36422x2-control

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