HTTPfy

Port 8764 (openqueue)

IANA assigns port 8764 to openqueue: OPENQUEUE.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
openqueue TCP OPENQUEUE Matt Jensen -
openqueue UDP OPENQUEUE Matt Jensen -

Check what is listening on port 8764

Linux: is anything listening on TCP 8764?
sudo ss -tlnp 'sport = :8764'
Linux: UDP 8764
sudo ss -ulnp 'sport = :8764'
Linux / macOS: which process owns the port
sudo lsof -nP -i :8764
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':8764 '
Windows (Command Prompt)
netstat -ano | findstr :8764
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 8764 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 8764
From Windows
Test-NetConnection HOST -Port 8764
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 8764

Block port 8764 in the firewall

ufw
sudo ufw deny 8764/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 8764 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 8764 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 8764' -Direction Inbound -Protocol TCP -LocalPort 8764 -Action Block
ufw
sudo ufw deny 8764/udp
iptables
sudo iptables -A INPUT -p udp --dport 8764 -j DROP
nftables
sudo nft add rule inet filter input udp dport 8764 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 8764' -Direction Inbound -Protocol UDP -LocalPort 8764 -Action Block

Related ports

8750dey-keyneg8763mc-appserver8765ultraseek-http8766amcs

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