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Port 1365 (adapt-sna)

IANA assigns port 1365 to adapt-sna: Network Software Associates.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
adapt-sna TCP Network Software Associates Jeffery Chiao -
adapt-sna UDP Network Software Associates Jeffery Chiao -

Check what is listening on port 1365

Linux: is anything listening on TCP 1365?
sudo ss -tlnp 'sport = :1365'
Linux: UDP 1365
sudo ss -ulnp 'sport = :1365'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1365
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1365 '
Windows (Command Prompt)
netstat -ano | findstr :1365
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1365 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1365
From Windows
Test-NetConnection HOST -Port 1365
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1365

Block port 1365 in the firewall

ufw
sudo ufw deny 1365/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1365 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1365 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1365' -Direction Inbound -Protocol TCP -LocalPort 1365 -Action Block
ufw
sudo ufw deny 1365/udp
iptables
sudo iptables -A INPUT -p udp --dport 1365 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1365 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1365' -Direction Inbound -Protocol UDP -LocalPort 1365 -Action Block

Related ports

1363ndm-requester1364ndm-server1366netware-csp1367dcs

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