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Port 3174 (armi-server)

IANA assigns port 3174 to armi-server: ARMI Server.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
armi-server TCP ARMI Server Bobby Martin -
armi-server UDP ARMI Server Bobby Martin -

Check what is listening on port 3174

Linux: is anything listening on TCP 3174?
sudo ss -tlnp 'sport = :3174'
Linux: UDP 3174
sudo ss -ulnp 'sport = :3174'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3174
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3174 '
Windows (Command Prompt)
netstat -ano | findstr :3174
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3174 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3174
From Windows
Test-NetConnection HOST -Port 3174
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3174

Block port 3174 in the firewall

ufw
sudo ufw deny 3174/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3174 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3174 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3174' -Direction Inbound -Protocol TCP -LocalPort 3174 -Action Block
ufw
sudo ufw deny 3174/udp
iptables
sudo iptables -A INPUT -p udp --dport 3174 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3174 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3174' -Direction Inbound -Protocol UDP -LocalPort 3174 -Action Block

Related ports

3172serverview-rm3173serverview-icc3175t1-e1-over-ip3176ars-master

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