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Port 2174 (msfw-array)

IANA assigns port 2174 to msfw-array: MS Firewall Intra Array.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
msfw-array TCP MS Firewall Intra Array Itai Greenberg -
msfw-array UDP MS Firewall Intra Array Itai Greenberg -

Registry dates for this port: registered 2004-11.

Check what is listening on port 2174

Linux: is anything listening on TCP 2174?
sudo ss -tlnp 'sport = :2174'
Linux: UDP 2174
sudo ss -ulnp 'sport = :2174'
Linux / macOS: which process owns the port
sudo lsof -nP -i :2174
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':2174 '
Windows (Command Prompt)
netstat -ano | findstr :2174
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2174 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 2174
From Windows
Test-NetConnection HOST -Port 2174
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 2174

Block port 2174 in the firewall

ufw
sudo ufw deny 2174/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 2174 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 2174 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 2174' -Direction Inbound -Protocol TCP -LocalPort 2174 -Action Block
ufw
sudo ufw deny 2174/udp
iptables
sudo iptables -A INPUT -p udp --dport 2174 -j DROP
nftables
sudo nft add rule inet filter input udp dport 2174 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 2174' -Direction Inbound -Protocol UDP -LocalPort 2174 -Action Block

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