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Port 1312 (sti-envision)

IANA assigns port 1312 to sti-envision: STI Envision.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
sti-envision TCP STI Envision Don Stedman -
sti-envision UDP STI Envision Don Stedman -

Check what is listening on port 1312

Linux: is anything listening on TCP 1312?
sudo ss -tlnp 'sport = :1312'
Linux: UDP 1312
sudo ss -ulnp 'sport = :1312'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1312
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1312 '
Windows (Command Prompt)
netstat -ano | findstr :1312
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1312 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1312
From Windows
Test-NetConnection HOST -Port 1312
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1312

Block port 1312 in the firewall

ufw
sudo ufw deny 1312/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1312 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1312 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1312' -Direction Inbound -Protocol TCP -LocalPort 1312 -Action Block
ufw
sudo ufw deny 1312/udp
iptables
sudo iptables -A INPUT -p udp --dport 1312 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1312 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1312' -Direction Inbound -Protocol UDP -LocalPort 1312 -Action Block

Related ports

1310husky1311rxmon1313bmc-patroldb, bmc_patroldb1314pdps

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