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Port 4150 (PowerAlert-nsa)

IANA assigns port 4150 to PowerAlert-nsa: PowerAlert Network Shutdown Agent.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
PowerAlert-nsa TCP PowerAlert Network Shutdown Agent Mike Delgrosso 2 -
PowerAlert-nsa UDP PowerAlert Network Shutdown Agent Mike Delgrosso 2 -

Registry dates for this port: registered 2007-07-02.

Check what is listening on port 4150

Linux: is anything listening on TCP 4150?
sudo ss -tlnp 'sport = :4150'
Linux: UDP 4150
sudo ss -ulnp 'sport = :4150'
Linux / macOS: which process owns the port
sudo lsof -nP -i :4150
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':4150 '
Windows (Command Prompt)
netstat -ano | findstr :4150
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 4150 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 4150
From Windows
Test-NetConnection HOST -Port 4150
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 4150

Block port 4150 in the firewall

ufw
sudo ufw deny 4150/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 4150 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 4150 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 4150' -Direction Inbound -Protocol TCP -LocalPort 4150 -Action Block
ufw
sudo ufw deny 4150/udp
iptables
sudo iptables -A INPUT -p udp --dport 4150 -j DROP
nftables
sudo nft add rule inet filter input udp dport 4150 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 4150' -Direction Inbound -Protocol UDP -LocalPort 4150 -Action Block

Related ports

4148hhb-handheld4149agslb4151menandmice-noh, menandmice_noh4152idig-mux, idig_mux

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