Language Selection

English French German Italian Portuguese Spanish

TW My sysadmin toolbox

Filed under
Software

I started experimenting with Linux for fun, first with Slackware, but in the last few years more with Debian and its derivative distributions. Lately I've been using Linux increasingly in my job. As I've gotten more experienced with Linux, I've started teaching Linux courses to colleagues. Connectivity and fast package and file management are important components in my administration toolbox.

OpenSSH

OpenSSH is my all-time favorite set of tools. I often use it for port forwarding to networks I don't otherwise have direct access to. You can also use SSH as a SOCKS proxy using dynamic port forwarding, like this:
ssh -D 8080 remotehost
I can then set a SOCKS proxy in my browser to localhost, port 8080, and voilà -- my browser can access everything that remotehost can.

Socat

Socat has been described as "netcat on steroids." It can read from and write to files, pipes, and all kinds of sockets. I use it mostly for port forwarding (TCP relay). For example, to forward all incoming connections on port 1234 of my host to port 1234 of destination.host, I run:

Full Story.

More in Tux Machines

The Internet Without Connection, Free Endless OS For Emerging Markets

There are four billion people on the planet without PCs or access to affordable personal computers. That figure should surely be tempered with some contextualization i.e. not everybody actually wants to have an Internet connection and many traditional, native or bucolic ways of live do still exist on the planet. Regardless, there are a batch of global initiatives in existence which seek to give computer access to every man, woman and especially child. Endless OS is one such project. The free operating system has been designed explicitly to work in the expensive or restrictive Internet data conditions that often exist in emerging markets where fabulously affordable broadband has yet to arrive. The software itself is built to provide useful information and educational content, with or without an Internet connection. Read more