Port 1382 (udt-os, udt_os)

IANA assigns port 1382 to udt-os, udt_os: udt_os IANA assigned this well-formed service name as a replacement for "udt_os"..

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference

udt-os TCP udt_os IANA assigned this well-formed service name as a replacement for "udt_os". - -

udt_os TCP udt_os
This entry is an alias to "udt-os". This entry is now historic, not usable for use with many common service discovery mechanisms. - -

udt-os UDP udt_os IANA assigned this well-formed service name as a replacement for "udt_os". - -

udt_os UDP udt_os
This entry is an alias to "udt-os". This entry is now historic, not usable for use with many common service discovery mechanisms. - -

Check what is listening on port 1382

Linux: is anything listening on TCP 1382?

sudo ss -tlnp 'sport = :1382'

Linux: UDP 1382

sudo ss -ulnp 'sport = :1382'

Linux / macOS: which process owns the port

sudo lsof -nP -i :1382

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':1382 '

Windows (Command Prompt)

netstat -ano | findstr :1382

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1382 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine

nc -vz -w 5 HOST 1382

From Windows

Test-NetConnection HOST -Port 1382

UDP probe (no reply does not prove it is closed)

nc -vzu -w 5 HOST 1382

Block port 1382 in the firewall

ufw

sudo ufw deny 1382/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 1382 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 1382 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 1382' -Direction Inbound -Protocol TCP -LocalPort 1382 -Action Block

ufw

sudo ufw deny 1382/udp