linux Category: linux - 200 OK SwatantrAI

SELinux

Swatantra Kumar — Sat, 11 May 2019 10:24:32 +0000

SELinux provides a flexible Mandatory Access Control (MAC) system built into the Linux kernel.

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How to Test Sendmail From Command Line on Linux

Swatantra Kumar — Thu, 25 Apr 2019 11:52:33 +0000

What Is Sendmail? sendmail is a very plain and simple MTA (Mail Transfer Agent), which implements the SMTP (Simple Mail Transfer Protocol) amongst others and can be used to transmit emails, typically on Linux. While there is a commercial version available which is called “Sendmail”, the sendmail we’re covering in this how-to article is the UNIX-based […]

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Create CSR using OpenSSL

Swatantra Kumar — Sun, 16 Dec 2018 14:24:03 +0000

Before you can install a Secure Socket Layer (SSL) certificate, you must first generate a certificate signing request (CSR). OpenSSL The following sections describe how to use OpenSSL to generate a CSR for a single host name. Install OpenSSL Check whether OpenSSL is installed by using the following command: CentOS® and Red Hat® Enterprise Linux® The […]

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How to setup time synchronization on servers

Swatantra Kumar — Sat, 01 Dec 2018 15:55:23 +0000

In Hyper-V virtualization, a guest virtual machine has something called “Integration Services.” By default, all of these services are pretty much enabled, including time synchronization. However, this can cause big issues if you have virtual Domain Controllers, and your physical host servers are not getting their time from a common, reliable source, such as an […]

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openssl create cert

Swatantra Kumar — Fri, 23 Nov 2018 11:24:29 +0000

Openssl is a handy utility to create self-signed certificates. You can use OpenSSL on all the operating systems such as Windows, MAC, and Linux flavors. openssl req -new > cert.csr openssl rsa -in privkey.pem -out key.pem openssl x509 -in cert.csr -out cert.pem -req -signkey key.pem -days 1001 echo key.pem>>cert.pem

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