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Port 36424 (nq-ap)

IANA assigns port 36424 to nq-ap: Nq and Nq' Application Protocol.

Registered (user) port, 1024-49151 TCP

IANA assignment

Service nameProtoDescriptionAssigneeReference
nq-ap SCTP Nq and Nq' Application Protocol 3GPP 4 -

Registry dates for this port: registered 2015-06-18.

Check what is listening on port 36424

Linux: is anything listening on TCP 36424?
sudo ss -tlnp 'sport = :36424'
Linux / macOS: which process owns the port
sudo lsof -nP -i :36424
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':36424 '
Windows (Command Prompt)
netstat -ano | findstr :36424
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 36424 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 36424
From Windows
Test-NetConnection HOST -Port 36424

Block port 36424 in the firewall

ufw
sudo ufw deny 36424/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 36424 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 36424 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 36424' -Direction Inbound -Protocol TCP -LocalPort 36424 -Action Block

Related ports

36422x2-control36423slmap36443m2ap36444m3ap

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