HTTPfy

Port 6066 (ewctsp)

IANA assigns port 6066 to ewctsp: EWCTSP.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
ewctsp TCP EWCTSP Mark Bailon -
ewctsp UDP EWCTSP Mark Bailon -

Check what is listening on port 6066

Linux: is anything listening on TCP 6066?
sudo ss -tlnp 'sport = :6066'
Linux: UDP 6066
sudo ss -ulnp 'sport = :6066'
Linux / macOS: which process owns the port
sudo lsof -nP -i :6066
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':6066 '
Windows (Command Prompt)
netstat -ano | findstr :6066
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 6066 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 6066
From Windows
Test-NetConnection HOST -Port 6066
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 6066

Block port 6066 in the firewall

ufw
sudo ufw deny 6066/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 6066 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 6066 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 6066' -Direction Inbound -Protocol TCP -LocalPort 6066 -Action Block
ufw
sudo ufw deny 6066/udp
iptables
sudo iptables -A INPUT -p udp --dport 6066 -j DROP
nftables
sudo nft add rule inet filter input udp dport 6066 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 6066' -Direction Inbound -Protocol UDP -LocalPort 6066 -Action Block

Related ports

6064ndl-ahp-svc6065winpharaoh6068gsmp-ancp6069trip

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