All Posts tagged as "server security"

Preventing SSH and SQL injection attacks using Fail2ban

Fail2Ban is an intrusion detection and prevention tool for Linux operating system. It is written in Python language. It works by checking log files using regular expressions. Entries that match the regular expression are banned by adding the IP address to the system firewall.

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Linux Server Security - Quick Tips

Following are some quick tips related to Linux Server Security:

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Preventing WordPress Spam

WordPress is a very popular platform for publishing websites. Almost all features that one can expect from a website are provided in the form of open source plugins and themes. Adding new features to a website is as easy as installing a plugin and configuring it.

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Integrating ModSecurity with Nginx on Debian 9

ModSecurity is a an open source Web Application Firewall (WAF). It can detect as well as prevent attacks to web applications. Initially released as an Apache web server module, ModSecurity now supports all major Web Servers including IIS, Nginx and Apache.

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Generating free SSL certificate from LetsEncrypt on localhost

If your website hosting allows uploading SSL certificates but does not allow SSH access and you need a SSL certificate for your website, then a free SSL certificate from LetsEncrypt is a good option.

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INADEQUATE_SECURITY - SSL Cipher problems with HTTP2

HTTP2 requires encryption over SSL. The recommended SSL protocol for HTTP2 is TLS 1.2. Ciphers are encryption algorithms used by SSL protocols.

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Securing Plesk using the Plesk Advisor extension

Plesk is a useful control panel for Windows and Linux based servers. It is used for managing web hosts, users, server security, email and more.

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Preventing spam messages with Contact Form 7 WordPress plugin

Contact Form 7 is a plugin for WordPress that allows website visitors to contact website owners. It is one of the most popular WordPress plugins with over 5 million active installations.

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Securing Linux servers with SeLinux, ClamAV, SpamAssassin and RkHunter

Securing your servers is a very important task that can save your organization a lot of problems. Recently there have been a lot of cases where insecure servers belonging to high profile organizations have been exploited and used for nefarious purpose. It is therefore important to secure your servers.

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Understanding Meltdown and Spectre vunerabilities

Meltdown and Spectre are hardware vulnerabilities that affect all microprocessors based on Intel and some based on ARM and AMD.

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Securing your Email server

In this blog post I will describe my experience with installing, configuring and securing an email server. Many companies have their own email servers but one thing I noticed about in house email servers is that they are very unreliable.

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