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How to stop bad bots from visiting your website

Recently I noticed in Google Analytics a lot of referral to the page https://www.mydomain-name.com//h/1486338.html that doesn’t exist on one of my website....

Zimbra XXE / SSRF Vulnerability Disclosure

At March 18, 2019 , Rene Ottom, Vice President Product eMail and Collaboration announced that The Zimbra Security team has been...

March 13, 2019: End-of-Life for All TLS-SNI-01 Validation Support

Let’s Encrypt allows subscribers to validate domain control using any one of a few different validation methods....

How to stop using TLS-SNI-01 with Certbot

Let’s Encrypt is removing support for domain validation with TLS-SNI-01. If you’re using Certbot and received an email titled “Action required: Let’s...

Simple PHP Mail test

This is a simple task and sometimes we need this for testing Prerequisites
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Tools for load-testing HTTP servers

Knowing how much traffic your web server can handle when under stress is essential for planning future grow of your website or...

Set Up Routing with ip Command in Linux

Can you explain the ip command to setup routing on Linux based systems? How do I use the ip command to configure the routing...

How to Kill MySQL Queries

MySQL queries can sometimes be long-running and may prevent transactions from accessing necessary tables to complete a...

Managing Journal Systemd Ubuntu

By default, systemd-journald ensures older journal records or journal files are deleted in order to keep a certain amount of disk space...