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Port 1380 (telesis-licman)

IANA assigns port 1380 to telesis-licman: Telesis Network License Manager.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
telesis-licman TCP Telesis Network License Manager Karl Schendel Jr -
telesis-licman UDP Telesis Network License Manager Karl Schendel Jr -

Check what is listening on port 1380

Linux: is anything listening on TCP 1380?
sudo ss -tlnp 'sport = :1380'
Linux: UDP 1380
sudo ss -ulnp 'sport = :1380'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1380
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1380 '
Windows (Command Prompt)
netstat -ano | findstr :1380
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1380 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1380
From Windows
Test-NetConnection HOST -Port 1380
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1380

Block port 1380 in the firewall

ufw
sudo ufw deny 1380/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1380 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1380 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1380' -Direction Inbound -Protocol TCP -LocalPort 1380 -Action Block
ufw
sudo ufw deny 1380/udp
iptables
sudo iptables -A INPUT -p udp --dport 1380 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1380 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1380' -Direction Inbound -Protocol UDP -LocalPort 1380 -Action Block

Related ports

1378elan1379dbreporter1381apple-licman1382udt-os, udt_os

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