Author Archives: Ahmed Tawfik

Unknown's avatar

About Ahmed Tawfik

Cybersecurity Professional, Systems Engineer, OSS & Linux Geek

How to restart OpenVPN Service on CentOS 7

Posted on April 4, 2016 by Ahmed Tawfik

systemctl restart openvpn@server.service

Posted in Uncategorized | Leave a comment

Bypass Code Integrity Checking in ownCloud 9

Posted on March 22, 2016 by Ahmed Tawfik

This is an added security feature in ownCloud 9 to sign all the changes to avoid malicious code or files in ownCloud releases. However, due to a bug in ownCloud 9.0.0, this message appears by mistake when installing some official … Continue reading →

Posted in Cloud, owncloud, Uncategorized | Tagged , , , , , | Leave a comment

How to force usage of DNS name instead of IP in ownCloud

Posted on March 20, 2016 by Ahmed Tawfik

Sometimes when sharing a link in owncloud, especially on the mobile and desktop clients, the links are using the IP address instead of the DNS name. This behavior can be changed by using the overwritehost parameter in the config.php file … Continue reading →

Posted in Cloud, Uncategorized | Tagged , , , | Leave a comment

How to mount a file created using dd command

Posted on March 17, 2016 by Ahmed Tawfik

I created an exact copy of a bootable USB drive using the dd command (which is an extremely cool tool by the way) using the following command: dd if=/dev/sdb of=myFile.img After that, to mount it, you can simply use the … Continue reading →

Posted in Linux, Ubuntu | Tagged , , , | Leave a comment

How to reset your administrative user password in ubuntu

Posted on March 10, 2016 by Ahmed Tawfik

It’s useful in case you forget your password and unable to access your system. All you have to do is: startup your machine and select the kernel that you use at the grub menu press e to start editing Find … Continue reading →

Posted in Linux, Mint, Ubuntu | Tagged , , , | Leave a comment