HTTPfy

Port 1346 (alta-ana-lm)

IANA assigns port 1346 to alta-ana-lm: Alta Analytics License Manager.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
alta-ana-lm TCP Alta Analytics License Manager - -
alta-ana-lm UDP Alta Analytics License Manager - -

Check what is listening on port 1346

Linux: is anything listening on TCP 1346?
sudo ss -tlnp 'sport = :1346'
Linux: UDP 1346
sudo ss -ulnp 'sport = :1346'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1346
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1346 '
Windows (Command Prompt)
netstat -ano | findstr :1346
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1346 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1346
From Windows
Test-NetConnection HOST -Port 1346
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1346

Block port 1346 in the firewall

ufw
sudo ufw deny 1346/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1346 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1346 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1346' -Direction Inbound -Protocol TCP -LocalPort 1346 -Action Block
ufw
sudo ufw deny 1346/udp
iptables
sudo iptables -A INPUT -p udp --dport 1346 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1346 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1346' -Direction Inbound -Protocol UDP -LocalPort 1346 -Action Block

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