PORT 8200 / TCPSecurity & RemoteExposure Risk: Critical

Port 8200: HashiCorp Vault — HashiCorp Vault Secrets Management HTTP API & UI

Default port for HashiCorp Vault secret engine API and web UI.

Default Service

HashiCorp Vault

Process: vault

Transport Protocol

TCP

IANA Registered Port 8200

Docker Port Flag

-p 8200:8200

Container to Host Mapping

How to Check & Kill Process on Port 8200 (EADDRINUSE Fix)

macOS & Linux (lsof / kill)

# Find process using port 8200
sudo lsof -i :8200

# Instantly kill process on port 8200
lsof -ti:8200 | xargs kill -9

Windows (PowerShell & CMD)

# Find PID listening on port 8200
netstat -ano | findstr :8200

# Force kill by PID
taskkill /PID <PID_NUMBER> /F

Cross-Platform Node.js One-Liner

# Kill port 8200 via npx
npx kill-port 8200

# Or diagnose via Castov CLI
npx castov fix "EADDRINUSE :::8200"

Linux Firewall (UFW) & Connectivity Test

# Test if port 8200 is reachable
nc -zv localhost 8200

# Allow or deny port 8200 in UFW
sudo ufw allow 8200/tcp

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Frequently Asked Questions about Port 8200

What is Port 8200 used for?

Port 8200 is the standard network port for HashiCorp Vault (HashiCorp Vault Secrets Management HTTP API & UI) operating over TCP. The typical system daemon or process is vault.

How do I kill a process running on Port 8200 (EADDRINUSE)?

On macOS and Linux, run: lsof -ti:8200 | xargs kill -9 (or npx kill-port 8200). On Windows PowerShell/CMD, run: netstat -ano | findstr :8200 and then taskkill /PID <PID> /F.