HTTPfy

Port 3047 (hlserver)

IANA assigns port 3047 to hlserver: Fast Security HL Server.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
hlserver TCP Fast Security HL Server Safenet Inc. -
hlserver UDP Fast Security HL Server Safenet Inc. -

Registry dates for this port: last modified 2014-07-02.

Check what is listening on port 3047

Linux: is anything listening on TCP 3047?
sudo ss -tlnp 'sport = :3047'
Linux: UDP 3047
sudo ss -ulnp 'sport = :3047'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3047
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3047 '
Windows (Command Prompt)
netstat -ano | findstr :3047
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3047 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3047
From Windows
Test-NetConnection HOST -Port 3047
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3047

Block port 3047 in the firewall

ufw
sudo ufw deny 3047/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3047 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3047 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3047' -Direction Inbound -Protocol TCP -LocalPort 3047 -Action Block
ufw
sudo ufw deny 3047/udp
iptables
sudo iptables -A INPUT -p udp --dport 3047 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3047 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3047' -Direction Inbound -Protocol UDP -LocalPort 3047 -Action Block

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3045responsenet3046di-ase3048pctrader3049nsws

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