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Port 36422 (x2-control)

IANA assigns port 36422 to x2-control: X2-Control Plane (3GPP).

Registered (user) port, 1024-49151 TCP

IANA assignment

Service nameProtoDescriptionAssigneeReference
x2-control SCTP X2-Control Plane (3GPP) Kimmo Kymalainen -

Registry dates for this port: registered 2009-09-01.

Check what is listening on port 36422

Linux: is anything listening on TCP 36422?
sudo ss -tlnp 'sport = :36422'
Linux / macOS: which process owns the port
sudo lsof -nP -i :36422
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':36422 '
Windows (Command Prompt)
netstat -ano | findstr :36422
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 36422 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 36422
From Windows
Test-NetConnection HOST -Port 36422

Block port 36422 in the firewall

ufw
sudo ufw deny 36422/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 36422 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 36422 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 36422' -Direction Inbound -Protocol TCP -LocalPort 36422 -Action Block

Related ports

36411wlcp36412s1-control36423slmap36424nq-ap

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