Try to nail two boards together with your bare hands. Can't be done. You need a hammer. But the power is not the hammer's. It's yours, because the hammer is your tool. As a tool, it becomes part of you. That's what tools do: they enlarge your capacity for action and effect. That capacity is called agency. To have agency is to operate with […]
After years of making it clear that I'm not a developer in just about every article I've written here at Linux Journal, I do have a confession to make. I can write the "Hello World" equivalent in almost every programming language out there. In assembly, it might have been "1+1", but my lack of advanced skills should be evident. […]
A science center in Johannesburg, South Africa, has opened the doors to a five-month course in Linux-based Web apps and entrepreneurial skills. The training is available free of charge to underprivileged students from nearby townships; if it's successful, it will be rolled out nationwide. more>> […]
Would you change what you said on the phone, if you knew someone malicious was listening? Whether or not you view the NSA as malicious, I imagine that after reading the NSA coverage on Linux Journal, some of you found yourselves modifying your behavior. The same thing happened to me when I started deploying servers into a public cloud (EC2 in my case). more […]
In my last article (February 2015), I explained how to create a simple Django project ("atfproject") and inside that, create a simple application (atfapp). The application worked in that if you went to the URL http://localhost:8000/hello/Reuven, you got the text "hello, Reuven". more>> […]
With the price and size of computer hardware steadily decreasing, it's becoming more viable to use embedded Linux systems to control small robots and drones. There are plenty of projects for Raspberry Pi, but not everyone wants to build a drone from scratch. That's why enthusiasts will be pleased to hear about the new drones from Parrot. more> […]
I setup a web-server. I need to grant a user ssh access but I do not trust users. How can I limit user session to a specific directory such as /home/httpd/$USERNAME? How do I set up a ssh chroort jail on a Linux operating systems?
How do I use and jump through one server to reach another using ssh on a Linux or Unix-like systems? Is it possible to connect to another host via an intermediary so that the client can act as if the connection were direct using ssh?
I'm using Debian Linux server with Linux Containers (lxc). How do I disconnect and exit from an lxc-console to a shell prompt without closing ssh session? You need to use the to log in to a running Linux container. The syntax is as follows: lxc-console -n container-name lxc-console -n webserver lxc-console -n pgsql To exit […]
A very serious security problem has been found in the virtual floppy drive QEMU's code used by many computer virtualization platforms including Xen, KVM, VirtualBox, and the native QEMU client. It is called VENOM vulnerability. How can I fix VENOM vulnerability and protect my Linux server against the attack? How do I verify that my server has been fixed […]
I want to block Internet Explorer (MS-IE) browser on a squid proxy server running on a Linux or Unix-like systems. How can I block IE on a squid proxy server version 3.x? You need to setup an acl on a squid proxy server to block Microsoft Internet Explorer or any other browser of your choice. […]