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Port 1862 (mysql-cm-agent)

IANA assigns port 1862 to mysql-cm-agent: MySQL Cluster Manager Agent.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
mysql-cm-agent TCP MySQL Cluster Manager Agent Andrew Morgan -
mysql-cm-agent UDP MySQL Cluster Manager Agent Andrew Morgan -

Registry dates for this port: registered 2009-12-08.

Check what is listening on port 1862

Linux: is anything listening on TCP 1862?
sudo ss -tlnp 'sport = :1862'
Linux: UDP 1862
sudo ss -ulnp 'sport = :1862'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1862
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1862 '
Windows (Command Prompt)
netstat -ano | findstr :1862
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1862 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1862
From Windows
Test-NetConnection HOST -Port 1862
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1862

Block port 1862 in the firewall

ufw
sudo ufw deny 1862/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1862 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1862 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1862' -Direction Inbound -Protocol TCP -LocalPort 1862 -Action Block
ufw
sudo ufw deny 1862/udp
iptables
sudo iptables -A INPUT -p udp --dport 1862 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1862 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1862' -Direction Inbound -Protocol UDP -LocalPort 1862 -Action Block

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Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.