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Port 3712 (sentinel-ent)

IANA assigns port 3712 to sentinel-ent: Sentinel Enterprise.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
sentinel-ent TCP Sentinel Enterprise Ian Gordon 2 -
sentinel-ent UDP Sentinel Enterprise Ian Gordon 2 -

Registry dates for this port: registered 2003-03.

Check what is listening on port 3712

Linux: is anything listening on TCP 3712?
sudo ss -tlnp 'sport = :3712'
Linux: UDP 3712
sudo ss -ulnp 'sport = :3712'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3712
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3712 '
Windows (Command Prompt)
netstat -ano | findstr :3712
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3712 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3712
From Windows
Test-NetConnection HOST -Port 3712
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3712

Block port 3712 in the firewall

ufw
sudo ufw deny 3712/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3712 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3712 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3712' -Direction Inbound -Protocol TCP -LocalPort 3712 -Action Block
ufw
sudo ufw deny 3712/udp
iptables
sudo iptables -A INPUT -p udp --dport 3712 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3712 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3712' -Direction Inbound -Protocol UDP -LocalPort 3712 -Action Block

Related ports

3710portgate-auth3711edb-server23713tftps3714delos-dms

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