HTTPfy

Port 6446 (mysql-proxy)

IANA assigns port 6446 to mysql-proxy: MySQL Proxy.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
mysql-proxy TCP MySQL Proxy Kay Roepke -
mysql-proxy UDP MySQL Proxy Kay Roepke -

Registry dates for this port: registered 2009-04-22.

Check what is listening on port 6446

Linux: is anything listening on TCP 6446?
sudo ss -tlnp 'sport = :6446'
Linux: UDP 6446
sudo ss -ulnp 'sport = :6446'
Linux / macOS: which process owns the port
sudo lsof -nP -i :6446
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':6446 '
Windows (Command Prompt)
netstat -ano | findstr :6446
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 6446 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 6446
From Windows
Test-NetConnection HOST -Port 6446
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 6446

Block port 6446 in the firewall

ufw
sudo ufw deny 6446/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 6446 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 6446 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 6446' -Direction Inbound -Protocol TCP -LocalPort 6446 -Action Block
ufw
sudo ufw deny 6446/udp
iptables
sudo iptables -A INPUT -p udp --dport 6446 -j DROP
nftables
sudo nft add rule inet filter input udp dport 6446 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 6446' -Direction Inbound -Protocol UDP -LocalPort 6446 -Action Block

Related ports

6444sge-qmaster, sge_qmaster6445sge-execd, sge_execd6455skip-cert-recv6456skip-cert-send

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