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Port 3176 (ars-master)

IANA assigns port 3176 to ars-master: ARS Master.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
ars-master TCP ARS Master Portnoy Boxman -
ars-master UDP ARS Master Portnoy Boxman -

Check what is listening on port 3176

Linux: is anything listening on TCP 3176?
sudo ss -tlnp 'sport = :3176'
Linux: UDP 3176
sudo ss -ulnp 'sport = :3176'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3176
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3176 '
Windows (Command Prompt)
netstat -ano | findstr :3176
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3176 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3176
From Windows
Test-NetConnection HOST -Port 3176
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3176

Block port 3176 in the firewall

ufw
sudo ufw deny 3176/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3176 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3176 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3176' -Direction Inbound -Protocol TCP -LocalPort 3176 -Action Block
ufw
sudo ufw deny 3176/udp
iptables
sudo iptables -A INPUT -p udp --dport 3176 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3176 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3176' -Direction Inbound -Protocol UDP -LocalPort 3176 -Action Block

Related ports

3174armi-server3175t1-e1-over-ip3177phonex-port3178radclientport

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