Localhost

Blog posts tagged “Localhost”

Port 0: The Port That Doesn't Exist

Networking Ssh Tcp

Port 0 is reserved in TCP and UDP, yet bind(0) asks the kernel for a free port and ssh -R0 asks a server for one. How each case works, with Linux and Node.js examples.

localhost:11501 - Khajane 2 (K2) Treasury App Port Guide

Localhost Port Khajane2

Guide to https://localhost:11501 - the local port used by the Khajane 2 (K2) desktop app from Karnataka's Department of Treasuries, with fixes for certificate warnings and connection errors.

Catch Signup Fraud in Local Dev, Before It Ships

OTP Authentication Webhook Testing

A working OTP flow proves your app sends and checks a code. It doesn't prove your signup holds up against bots. Here's how to test auth for fraud resistance locally with a Pinggy tunnel.

Run OpenClaw Locally and Access It from Anywhere with Pinggy

Openclaw Ai-Agent Pinggy

OpenClaw is the fastest-growing open-source AI agent in GitHub history. Learn how to install it locally, expose port 18789 with a Pinggy HTTPS tunnel, and connect Telegram webhook mode - all with one SSH command.

Expose a Local MCP Server with Pinggy

MCP Model Context Protocol SSH Tunnel

MCP servers run on localhost by default. Here's how to give yours a public HTTPS URL in one SSH command using Pinggy - no deploy, no infra.

Expose Local MCP Servers Securely with Pinggy

MCP Model Context Protocol Pinggy

Learn how to share a localhost MCP server using Pinggy. This guide covers Streamable HTTP MCP servers, public HTTPS tunnels, testing, authentication, and practical security tips.

localhost:9090 - Prometheus Web UI Port Guide

Localhost Port Prometheus

Complete guide to localhost:9090 - the default port of the Prometheus web UI and HTTP API, also used by the Cockpit server console and the Openfire admin console.