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Port 3068 (ls3bcast)

IANA assigns port 3068 to ls3bcast: ls3 Broadcast.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
ls3bcast TCP ls3 Broadcast - -
ls3bcast UDP ls3 Broadcast - -

Check what is listening on port 3068

Linux: is anything listening on TCP 3068?
sudo ss -tlnp 'sport = :3068'
Linux: UDP 3068
sudo ss -ulnp 'sport = :3068'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3068
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3068 '
Windows (Command Prompt)
netstat -ano | findstr :3068
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3068 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3068
From Windows
Test-NetConnection HOST -Port 3068
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3068

Block port 3068 in the firewall

ufw
sudo ufw deny 3068/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3068 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3068 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3068' -Direction Inbound -Protocol TCP -LocalPort 3068 -Action Block
ufw
sudo ufw deny 3068/udp
iptables
sudo iptables -A INPUT -p udp --dport 3068 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3068 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3068' -Direction Inbound -Protocol UDP -LocalPort 3068 -Action Block

Related ports

3066netattachsdmp3067fjhpjp3069ls33070mgxswitch

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