Category: Computer Networking

Self Hosted Docker Installation Pre-requirements Free resources you might need to complete this docker project: Pre-installed services: Docker,  apt update apt install docker.io apt install docker-compose apt upgrade docker.io mkdir /root/data/docker_data/<docker_name> Docker-Compose (Using Ubuntu OS for the commands) Docker-compose down Optional command : use following command to backup your Docker data. You might need to change…

Read More “[5 Mins Docker] Install Open Source System and Network Monitoring Application – Nagios Core – 51 Security” »

Cloudflare introduced free WARP service to provide faster and safer internet connection solution to all consumers since 2019. It is based on WireGuard tunnel protocol to create a secure tunnel between user’s device and one of global Cloudflare data centers near to the user.  In this blog post, I am gonna show you how to…

Read More “1.1.1.1 – Free, Safe, Fast DNS & VPN Service (Enable WARP+ with MASQUE Protocol) – 51 Security” »

This post is to record some key points to set up a Sentinel Lab   Data Sources Virtual Network (VNet) Network Security Group (NSG) Virtual Machines (2 windows with 1 MS SQL DB, 1 linux) Log Analytics Workspace Azure Key Vault Azure Storage Account Microsoft Sentinel Create Log Analytics Workspace and Sentinel Create Log Analytics…

Read More “Sentinel Lab Notes – 51 Security” »

 This is the post to collect some Notes from a lab practice. Management Endpoint Security Stack:  Antivirus Disk Encryption Firewall Endpoint Detection & Response Attack Surface Reduction Device Control Web Protection Network Protection Management Architecture Microsoft Endpoint Manager (MDM) = Microsoft Intune admin Center Antivirus Disk Encryption Firewall Endpoint  Detection and Response Endpoint Privilege Management Account…

Read More “Defender Lab Notes 1 (Mgmt & Config, RBAC, Prevention, ASR&NGP, Detection, Invesitigation, Response) – 51 Security” »

Endpoint Detection & Response 1 Proactive hunting Not all threat scenarios begin with an alert Proactive and iterative search for threats The power of knowing the network 2 Enrich existing information Understand the impact of existing alerts Get more information on entities and IOCs 3 Datasets Emails (Defender for Office) Email transactions, including post-delivery Emails attachments and URLs…

Read More “Defender Lab Notes 2 (License, Hunting, Vulnerability Management, API, Cross Platform) – 51 Security” »

This blog post shows you a way how to create your own online drive using free Cloudflare services, such as domain, pages and R2 storage service. Github Project : FlareDrive Cloudflare R2 storage manager with Pages and Workers. Free 10 GB storage. Free serverless backend with a limit of 100,000 invocation requests per day. More about…

Read More “Use Cloudflare Pages and R2 Storage to Create Free Online Drive – FlareDrive – 51 Security” »

AcmeCorp uses a Windows Server for Remote Desktop access to their network. While this is not considered a best practice, it is vital to their business and needs to be open from the Internet. Using the Malware Server, located on the internet, a hacker performs a random port scan and discovers port TCP/3389 is open…

Read More “Fortigate NGFW Solution – 51 Security” »

Microsoft Intune, together with Microsoft Entra ID, facilitates a secure, streamlined process for registering and enrolling devices that want access to your internal resources. Once users and devices are registered within your Microsoft Entra ID (also called a tenant), then you can utilize Intune for its endpoint management capabilities. The process that enables device management for…

Read More “Microsoft Intune Deploy Guide and Device Onboarding Process – 51 Security” »

This post is to record Traffic Shaping related notes for Fortigate   Creating Traffic Shaper for Specific Purpose Create a traffic shaper entry under Policies & Objects  -> Traffic Shaping  -> Traffic Shapers -> Create new. Enable Traffic Shaper for Certain SSL-VPN Firewall Rule Basically, we will be able to enable traffic shaping policy over a…

Read More “Config Fortigate Traffic Shaping – 51 Security” »

// <!–GAMFC–>version base on commit 5a112a0a0994b8bb834427ac84133501407f6413, time is 2024-10-11 04:49:19 UTC<!–GAMFC-END–>.// @ts-ignoreimport { connect } from ‘cloudflare:sockets’;// How to generate your own UUID:// [Windows] Press “Win + R”, input cmd and run:  Powershell -NoExit -Command “https://www.51sec.org/?p=5022::NewGuid()”let userID = ‘d342d11e-d424-4583-b36e-524ab1f0afa4’;let proxyIP = ”;if (!isValidUUID(userID)) { throw new Error(‘uuid is not valid’);}export default { /** * @param…

Read More “Use V2rayN (V2ray Client) to Protect Your Online Privacy & Bypass Internet Censorship – 51 Security” »