AWS Certified Solutions Architect

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CORS: How to handle it?

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What is CORS? CORS (Cross-Origin Resource Sharing) is a method that uses extra HTTP headers to notify browsers to allow a web application operating on one origin to access resources from another origin. Why does the browser need this mechanism? The security policy known as the “Same-origin policy” is implemented by most browsers, and it Read More

How to Secure, Harden and Improve Performance of Nginx Web Server

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#1: Keep Nginx up to date #2: Remove Unnecessary Modules in Nginx To explicitly remove modules from Nginx while installing from source, do: # ./configure –without-module1 –without-module2 –without-module3 For example: # ./configure –without-http_dav_module –withouthttp_spdy_module As you will probably guess, removing modules from a previous Nginx installation from source requires performing the compilation again. A word Read More

How to Use Nginx as an HTTP Load Balancer in Linux

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When it comes to setting up multiple application servers for redundancy, load balancing is a commonly used mechanism for efficiently distributing incoming service requests or network traffic across a group of back-end servers. Load balancing has several advantages including increased application availability through redundancy, increased reliability and scalability (more servers can be added in the Read More

How does SSL work?

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This blog is for people who want to learn about SSL and TLS. These are protocols that guard the contents of an HTTP session from third parties and eavesdroppers. The combination of TLS (or SSL) and HTTP creates an HTTPS connection. But in order to understand this, you need to remember what a socket is. A quick Read More