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Port 3348 (pangolin-laser)

IANA assigns port 3348 to pangolin-laser: Pangolin Laser.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
pangolin-laser TCP Pangolin Laser William Benner -
pangolin-laser UDP Pangolin Laser William Benner -

Check what is listening on port 3348

Linux: is anything listening on TCP 3348?
sudo ss -tlnp 'sport = :3348'
Linux: UDP 3348
sudo ss -ulnp 'sport = :3348'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3348
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3348 '
Windows (Command Prompt)
netstat -ano | findstr :3348
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3348 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3348
From Windows
Test-NetConnection HOST -Port 3348
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3348

Block port 3348 in the firewall

ufw
sudo ufw deny 3348/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3348 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3348 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3348' -Direction Inbound -Protocol TCP -LocalPort 3348 -Action Block
ufw
sudo ufw deny 3348/udp
iptables
sudo iptables -A INPUT -p udp --dport 3348 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3348 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3348' -Direction Inbound -Protocol UDP -LocalPort 3348 -Action Block

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