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Port 5306 (sun-mc-grp)

IANA assigns port 5306 to sun-mc-grp: Sun MC Group.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
sun-mc-grp TCP Sun MC Group Michael DeMoney -
sun-mc-grp UDP Sun MC Group Michael DeMoney -

Check what is listening on port 5306

Linux: is anything listening on TCP 5306?
sudo ss -tlnp 'sport = :5306'
Linux: UDP 5306
sudo ss -ulnp 'sport = :5306'
Linux / macOS: which process owns the port
sudo lsof -nP -i :5306
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':5306 '
Windows (Command Prompt)
netstat -ano | findstr :5306
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 5306 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 5306
From Windows
Test-NetConnection HOST -Port 5306
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 5306

Block port 5306 in the firewall

ufw
sudo ufw deny 5306/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 5306 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 5306 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 5306' -Direction Inbound -Protocol TCP -LocalPort 5306 -Action Block
ufw
sudo ufw deny 5306/udp
iptables
sudo iptables -A INPUT -p udp --dport 5306 -j DROP
nftables
sudo nft add rule inet filter input udp dport 5306 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 5306' -Direction Inbound -Protocol UDP -LocalPort 5306 -Action Block

Related ports

5304hacl-local5305hacl-test5307sco-aip5308cfengine

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