Port 3000 / TCP
Grafana / Node.js Dev
Port 3000 – Grafana / Node.js Dev Protocol Specification
Technical analysis, security advisories, vulnerability mitigation, and firewall syntax for TCP/UDP port 3000 (Grafana / Node.js Dev).
Port Number
3000
Transport Protocol
TCP
Port Range Type
Registered (1024-49151)
Default Status
Restricted / LAN
Service Description & Architectural Context
Default UI port for Grafana metric dashboards and development web apps.
IANA / RFC Designation:
Port 3000 is assigned to Grafana / Node.js Dev under the Internet Assigned Numbers Authority (IANA) service name registry. In enterprise infrastructure and homelab setups, services listening on this port must follow the principle of least privilege.
Security Analysis & Attack Surface Assessment
Change default Grafana admin password immediately; terminate SSL via proxy.
Hardening Recommendations:
- Do not expose port 3000 to public WAN interfaces unless authenticated TLS or VPN wrapping is strictly enforced.
- Enforce rate-limiting using Fail2ban, CrowdSec, or cloud edge DDoS protection.
- Audit active listening sockets locally:
ss -tulpn | grep :3000ornetstat -ano | findstr :3000.
Firewall Rule Snippets for Port 3000
UFW (Ubuntu / Debian Linux)
sudo ufw allow 3000/tcp
iptables (Standard Linux Kernel)
sudo iptables -A INPUT -p tcp --dport 3000 -j ACCEPT
Windows PowerShell (Defender Advanced Firewall)
New-NetFirewallRule -DisplayName "Allow Port 3000" -Direction Inbound -LocalPort 3000 -Protocol TCP -Action Allow