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Port 1768 (cft-7)

IANA assigns port 1768 to cft-7.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
cft-7 TCP cft-7 Martine Marchand -
cft-7 UDP cft-7 Martine Marchand -

Check what is listening on port 1768

Linux: is anything listening on TCP 1768?
sudo ss -tlnp 'sport = :1768'
Linux: UDP 1768
sudo ss -ulnp 'sport = :1768'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1768
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1768 '
Windows (Command Prompt)
netstat -ano | findstr :1768
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1768 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1768
From Windows
Test-NetConnection HOST -Port 1768
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1768

Block port 1768 in the firewall

ufw
sudo ufw deny 1768/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1768 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1768 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1768' -Direction Inbound -Protocol TCP -LocalPort 1768 -Action Block
ufw
sudo ufw deny 1768/udp
iptables
sudo iptables -A INPUT -p udp --dport 1768 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1768 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1768' -Direction Inbound -Protocol UDP -LocalPort 1768 -Action Block

Related ports

1766cft-51767cft-61769bmc-net-adm1770bmc-net-svc

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