HTTPfy

Port 3678 (ipr-dglt)

IANA assigns port 3678 to ipr-dglt: DataGuardianLT.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
ipr-dglt TCP DataGuardianLT Bruce Carlson -
ipr-dglt UDP DataGuardianLT Bruce Carlson -

Registry dates for this port: registered 2003-01.

Check what is listening on port 3678

Linux: is anything listening on TCP 3678?
sudo ss -tlnp 'sport = :3678'
Linux: UDP 3678
sudo ss -ulnp 'sport = :3678'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3678
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3678 '
Windows (Command Prompt)
netstat -ano | findstr :3678
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3678 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3678
From Windows
Test-NetConnection HOST -Port 3678
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3678

Block port 3678 in the firewall

ufw
sudo ufw deny 3678/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3678 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3678 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3678' -Direction Inbound -Protocol TCP -LocalPort 3678 -Action Block
ufw
sudo ufw deny 3678/udp
iptables
sudo iptables -A INPUT -p udp --dport 3678 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3678 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3678' -Direction Inbound -Protocol UDP -LocalPort 3678 -Action Block

Related ports

3676va-pacbase3677roverlog3679newton-dock3680npds-tracker

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