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Deploying a strongSwan IKEv2 VPN Server for Native Android 12+ Connectivity

How to Build an IKEv2 VPN Server for Android (Ubuntu 22.04) This guide walks you through setting up a strongSwan VPN server that is natively compatible with Android's built-in IKEv2/IPSec MSCHAPv2 client. Step 1: Install Dependencies Update your system and install strongSwan along with the EAP plugins required for Android authentication. sudo apt update && sudo apt upgrade -y sudo apt install strongswan strongswan-pki libcharon-extra-plugins libcharon-extauth-plugins libstrongswan-extra-plugins -y Step 2: Generate PKI Certificates The server needs a Certificate Authority (CA) and a Server Certificate to prove its identity to your phone. # 1. Create CA Key and Certificate ipsec pki --gen --type rsa --size 4096 --outform pem > ~/ca-key.pem ipsec pki --self --ca --lifetime 3650 --in ~/ca-key.pem --type rsa --dn "CN=VPN CA" --outform pem > ~/ca-cert.pem # 2. Create Server K...
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Setting Up MariaDB MaxScale Binlog Proxy for backup/failover

  Setting Up MariaDB MaxScale Binlog Proxy MariaDB MaxScale Binlog Server acts as an intermediate master replication proxy. By storing binary logs and serving them to replicas, it enables scalable replication architectures, reduces primary database load, and accelerates disaster recovery. Step 1: Install MariaDB MaxScale Install MaxScale using the package manager appropriate for your Linux distribution, then verify the installation. On Ubuntu/Debian: sudo apt-get update sudo apt-get install maxscale On RHEL/CentOS: sudo yum install maxscale Verify the installation: maxscale --version Step 2: Configure MaxScale as a Binlog Proxy Open MaxScale's core configuration file to establish the routing properties and specify your database backend configuration. sudo nano /etc/maxscale.cnf Add the following configurations for the moni...
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Deploying a laravel app using nginx alias

  server { listen 80; server_name subdomian.example.com; root /var/www/mainapp/; add_header X-Frame-Options "SAMEORIGIN"; add_header X-XSS-Protection "1; mode=block"; add_header X-Content-Type-Options "nosniff"; index index.html index.htm index.php; charset utf-8; error_log /var/log/nginx/error.log warn; location / { try_files $uri $uri/ /index.php?$query_string; } location = /favicon.ico { access_log off; log_not_found off; } location = /robots.txt { access_log off; log_not_found off; } error_page 404 /index.php; location ~ \.php$ { fastcgi_pass unix:/var/run/php/php8.1-fpm.sock; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME $realpath_root$fastcgi_script_name; include fastcgi_params; } location /laravelapp { alias /var/www/mainapp/laravelapp/public; index index.php index.html in...
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Get wifi password easily from a windows PC

How to get saved wifi password from a windows machines easily. Vulnerability: A hacker can easily use this trick if he can access a windows machine, get all the saved wifi password, implant a backdoor into the machine and try to access other devices connected to that wifi. So, keep secure your windows PC by using latest antivirus, firewall. Let's get started..... Open cmd and type "netsh wlan show profile" It will show all the saved wifi profile in your PC. Now select a profile to get it's password. netsh wlan show profile name="Finix" key=clear It will show detail of the SSID with a value "Key Content" under "Security Settings" that is the wifi password. Have fun.  
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Setup a Multi-Protocol VPN Server Using SoftEther on Centos7

  Introduction This article explains how to install and configure a multi-protocol VPN server using the SoftEther package. We enable and configure OpenVPN and L2TP over IPSec and SSTP VPN Servers on Linux. What is SoftEther SoftEther VPN is one of the world’s most powerful and easy-to-use multi-protocol VPN software, made by the good folks at the University of Tsukuba, Japan. It runs on Windows, Linux, Mac, FreeBSD and Solaris and is freeware and open-source. You can use SoftEther for any personal or commercial use free of charge. Step 1: Create a Virtual Server First, you need to create a DigitalOcean Droplet. As mentioned in SoftEther’s website, SoftEther will work on almost every Linux distro with kernel v2.4 or above,; however it’s recommended to choose one of these distributions: CentOS, Fedora, or Red Hat Enterprise Linux. Personally I have tried it on Ubuntu, CentOS and Fedora, both 32 and 64 bit editions, and it has worked perfectly. Step 2: Update your Server Software Usin...
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Configure Galera Cluster with Mariadb 10.3 on Centos7 with HAproxy load balancer

  Introduction Clustering adds high availability to your database by distributing changes to different servers. In the event that one of the instances fails, others are quickly available to continue serving. Clusters come in two general configurations,  active-passive  and  active-active . In active-passive clusters, all writes are done on a single active server and then copied to one or more passive servers that are poised to take over only in the event of an active server failure. Some active-passive clusters also allow  SELECT  operations on passive nodes. In an active-active cluster, every node is read-write and a change made to one is replicated to all. MariaDB  is an open source relational database system that is fully compatible with the popular MySQL RDBMS system. You can read the official documentation for MariaDB at this  page .  Galera  is a database clustering solution that enables you to set up multi-master clusters using sy...
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