Author Archives: Ahmed Tawfik

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About Ahmed Tawfik

Cybersecurity Professional, Systems Engineer, OSS & Linux Geek

Multi-hop SSH Connection

Posted on August 12, 2016 by Ahmed Tawfik

The case is as follows: You have a server, let’s name it “server2” that you need to SSH to, but unfortunately this server is not directly accessible, as you can SSH to it only through another server, let’s call it … Continue reading →

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Get to know your nearest AWS Location

Posted on July 29, 2016 by Ahmed Tawfik

Very useful to get the lowest network delay: http://turnkeylinux.github.io/aws-datacenters/

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The Fastest Way to Download a Website Offline

Posted on July 28, 2016 by Ahmed Tawfik

One Word & One Command: HTTrack, that’s the word To install it on Ubuntu: sudo apt install httrack Then, to run it: httrack http://www.xyz.com –max-rate=1000000000 –sockets=50 –disable-security-limits –display –max-rate is the download rate where 1000 = 1 KB/sec, so I am … Continue reading →

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How to check which ps is keeping nfs mount busy

Posted on April 4, 2016 by Ahmed Tawfik

sudo fuser -c /mount_point It will give an output like: /mount_point: 25422c then ps for the number before c That’s it! Enjoy!

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How to restart OpenVPN Service on CentOS 7

Posted on April 4, 2016 by Ahmed Tawfik

systemctl restart openvpn@server.service

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