Tagged articles

11 articles

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Feb 26, 2026 · Information Security

How to Bypass Internal Firewalls and Achieve Lateral Privilege Movement?

This article explains the core logic of internal firewalls, outlines compliant bypass techniques for boundary, segmentation, and host firewalls, and then details step‑by‑step lateral movement methods—including credential reuse, tunneling, and legitimate tool abuse—while emphasizing safe, authorized testing practices.

Lateral Movementcredential reusefirewall bypass

0 likes · 33 min read

How to Bypass Internal Firewalls and Achieve Lateral Privilege Movement?

Black & White Path

Feb 18, 2026 · Information Security

How to Bypass Internal Firewalls and Achieve Lateral Privilege Movement

This article explains the core logic of internal firewalls, outlines practical techniques for bypassing boundary, segmentation, and host firewalls—including legitimate‑port tunneling, rule‑configuration flaws, jump‑host exploitation, and tunneling methods—and then details step‑by‑step credential‑reuse and tool‑abuse strategies for stealthy lateral movement within a compromised network.

Lateral Movementcredential reusefirewall bypass

0 likes · 35 min read

Java Architect Handbook

Dec 21, 2025 · Backend Development

How to Expose Your Spring Boot API with cpolar: A Complete Step‑by‑Step Guide

This tutorial walks you through setting up a local Java Spring Boot service, installing and configuring cpolar for HTTP tunneling, creating and fixing a public address, and using the cpolar listener to monitor and replay API requests, complete with code snippets and screenshots.

API testingBackendJava

0 likes · 10 min read

How to Expose Your Spring Boot API with cpolar: A Complete Step‑by‑Step Guide

Raymond Ops

Mar 24, 2025 · Operations

Master Reverse SSH Tunneling: Seamlessly Access Firewalled Servers

This guide explains what reverse SSH tunneling is, why it’s needed to reach servers behind firewalls, and provides step‑by‑step commands and configuration tips—including the use of the ssh -R option, setting up a persistent machine, and essential sshd settings.

Remote accessreverse SSHtunneling

0 likes · 6 min read

Master Reverse SSH Tunneling: Seamlessly Access Firewalled Servers

Selected Java Interview Questions

Mar 13, 2024 · Backend Development

Using cpolar for Java SpringBoot API Testing and Fixed Public Tunnels

This tutorial demonstrates how to set up a SpringBoot Java service, expose its API through cpolar's internet‑penetration tunnel, configure a fixed sub‑domain, and use the cpolar listener to monitor and replay requests, providing a complete workflow for backend developers.

API testingBackendJava

0 likes · 9 min read

Using cpolar for Java SpringBoot API Testing and Fixed Public Tunnels

Programmer DD

Aug 7, 2023 · Operations

How to Quickly Expose Your Local Server with Ngrok for Seamless Payment Testing

This guide walks you through registering for Ngrok, installing it, configuring your auth token, and launching a tunnel to make your local development server reachable from the internet, enabling efficient payment platform debugging without a public IP.

Backend testingLocal Developmentngrok

0 likes · 5 min read

How to Quickly Expose Your Local Server with Ngrok for Seamless Payment Testing

Java High-Performance Architecture

May 22, 2023 · Backend Development

Build a Free Nginx Web Server on Windows – No Cost, No Domain Needed

Learn step‑by‑step how to download, install, configure, and launch Nginx on Windows, create a simple HTML site, and expose it to the internet for free using a tunneling service, all without spending money on servers or domain names.

TutorialWeb serverWindows

0 likes · 8 min read

Build a Free Nginx Web Server on Windows – No Cost, No Domain Needed

Tencent Cloud Developer

Apr 10, 2018 · Fundamentals

Comprehensive Overview of IPv6: Concepts, Linux Implementation, Experiments, and Transition Technologies

This article delivers a comprehensive, experiment‑driven guide to IPv6, covering its 128‑bit address scheme, Linux kernel stack, practical setups such as stateless autoconfiguration and web services, various transition mechanisms like dual‑stack, tunneling and NAT64/DNS64, and detailed socket‑programming considerations for developers.

IPv6Networkingaddressing

0 likes · 38 min read

Comprehensive Overview of IPv6: Concepts, Linux Implementation, Experiments, and Transition Technologies

System Architect Go

May 22, 2017 · Backend Development

How to Expose a Local Server to the Internet with ngrok (and a Brief Look at localtunnel)

This article explains why and how to expose a locally running server to the public internet using ngrok, demonstrates installation and usage steps including region configuration, compares it briefly with the open‑source localtunnel tool, and notes security considerations for development testing.

BackendDevelopmentNetworking

0 likes · 4 min read

How to Expose a Local Server to the Internet with ngrok (and a Brief Look at localtunnel)

Java High-Performance Architecture

Jul 19, 2016 · Backend Development

Expose Your Local App to the Internet Instantly with Ngrok

This guide explains how Ngrok creates a secure tunnel that lets clients and third‑party services access a locally running application via a public URL, eliminating the need for external servers during development, testing, and integration.

DeploymentLocal Developmentngrok

0 likes · 3 min read

Expose Your Local App to the Internet Instantly with Ngrok

MaGe Linux Operations

Jul 30, 2014 · Operations

Master SSH Tunneling: Forward, Reverse, SOCKS Proxy & Auto‑Reconnect Scripts

Learn how to create SSH tunnels for forward and reverse connections, set up SOCKS5 proxies, configure Windows SSH tools, and automate persistent connections with scripts like autossh, complete with practical command examples and step‑by‑step guidance for Linux and Windows environments.

AutomationSSHWindows

0 likes · 13 min read

Master SSH Tunneling: Forward, Reverse, SOCKS Proxy & Auto‑Reconnect Scripts