Category Archives: Linux (Ubuntu)

How to setup a intermediate compatible SSL website with LetsEncrypt certificate

Zabihah Halal Vitamins
How to setup a intermediate compatible SSL website with LetsEncrypt certificate
Many people have decided to implement Let’s Encrypt into their production sites. I find this still a very bad idea to be done without being very (but really very) careful. Let’s Encrypt brings you freedom but also limits you in using the certificate with SHA-256 RSA Encryption. Support for SHA-2 has improved over the last few years. Most browsers, platforms, mail clients and mobile devices already support SHA-2. However, some older operating systems such as Windows XP pre-SP3 do not support SHA-2 encryption. Many organizations will be able to convert to SHA-2 without running into user experience issues, and many may want to encourage users running older, less secure systems to upgrade. In this tutorial, we are going to deal with this incompatibility in a simple, but still nasty way.

Powered by WPeMatico

Rollback an apt-get upgrade if something goes wrong on Debian / Ubuntu Linux

Rollback an apt-get upgrade if something goes wrong on Debian / Ubuntu Linux
Rolling back to the previous version may solve the problem or free the disk space. Both CentOS/RHEL support rollback feature, but I learned hard way both Debian and Ubuntu does not support rollback feature yet.


Halal Vitamins

Powered by WPeMatico

How to Install VestaCP on CentOS 7

Zabihah Halal Vitamins
How to Install VestaCP on CentOS 7
VestaCP is a Free Open Source Control panel for server systems. It can help ease the burden of common system administration tasks such as website creation, database deployment and management, and more. This guide will help you get up and running with VestaCP on your CentOS.

Powered by WPeMatico

How To Patch and Protect OpenSSH Client Vulnerability CVE-2016-0777 and CVE-2016-0778 [ 14/Jan/2016 ]

How To Patch and Protect OpenSSH Client Vulnerability CVE-2016-0777 and CVE-2016-0778 [ 14/Jan/2016 ]

A serious security problem has been found and patched in the OpenSSH software. Two vulnerabilities have been discovered in OpenSSH on 14/Jan/2016. The OpenSSH project released an ssh client bug info that can leak private keys to malicious servers. A man-in-the-middle kind of attack identified and fixed in OpenSSH are dubbed CVE-2016-0777 and CVE-2016-0778. How do I fix OpenSSH’s client vulnerability on a Linux or Unix-like operating system?
Halal Vitamins

Powered by WPeMatico

How to paste password easily when pasting into password input fields disabled on Google Chrome

How to paste password easily when pasting into password input fields disabled on Google Chrome

I use the gpass password manager to store my randomly generated unique password for each site. However, many sites such as net banking prevent you from pasting a password when signing up. The site owner or webmaster disables pasting into password input fields. Want to paste your password on such site? Give it a try to don’t f*ck with paste Google Chrome extension.
Halal Vitamins

Powered by WPeMatico

Ubuntu Linux check cron log file error or messages in /var/log/cron.log file

Ubuntu Linux check cron log file error or messages in /var/log/cron.log file

I am trying to find errors or message for my cron job on Ubuntu Linux server. Where is the cron log in Ubuntu Linux 12.04/14.04 LTS server? How do I check cron logs in Ubuntu server? How to check if crond server is enabled and/or is running properly on Ubuntu Linux server?
Halal Vitamins

Powered by WPeMatico

How to use curl command with proxy username and password on Linux or Unix

How to use curl command with proxy username and password on Linux or Unix

My sysadmin provided me the following proxy details:        IP: 202.54.1.1
       Port: 3128
       Username: foo
       Password: bar
The settings worked perfectly with Google Chrome and Firefox browser. How do I use it with the curl command? How do I tell the curl command to use my proxy settings from Google Chrome browser?
Halal Vitamins

Powered by WPeMatico

How to install and configure vsftpd with TLS on Debian 8 (Jessie)

Zabihah Halal Vitamins
How to install and configure vsftpd with TLS on Debian 8 (Jessie)
This article explains how to set up a TLS enabled vsftpd server on a Debian 8 server. FTP is a very insecure protocol by default because all passwords and all data are transferred in clear text. By using TLS, the whole communication can be encrypted, thus making FTP much more secure.

Powered by WPeMatico

How to Encrypt your Data with EncFS on Debian 8 (Jessie)

Zabihah Halal Vitamins
How to Encrypt your Data with EncFS on Debian 8 (Jessie)
EncFS provides an encrypted filesystem in user-space. It runs without any special permissions and uses the FUSE library and Linux kernel module to provide the filesystem interface. It is a pass-through filesystem, not an encrypted block device, which means it is created on top of an existing filesystem. This tutorial shows how you can use EncFS on Debian Jessie to encrypt your data.

Powered by WPeMatico