Hi !
Like many servers with an open SSH port on the Internet, there are always people/systems wanting to successfully connect. There are of course a whole bunch of possible security measures but I will talk here about a solution which has the merit of being able to apply to SSH and more if necessary.
Hi !
I can’t count the number of times that using the “conn state” and “history” fields together has allowed me to accurately diagnose what was happening on my network. One can only praise Zeek’s documentation which indicates precisely what is happening.
Hi !
The Covid-19 pandemic being (for the moment) behind us, it is time to start graphing medical data again.
Hi !
In an old blog entry (“R - install packages in different ways”), I had indicated that I had encountered a bug with the installation of the “httpuv” software. In fact, by digging into the subject, it is not the software that is at fault but rather the compilation of another software that the latter uses. I am talking here about “libuv” which is necessary for “httpuv”. The simplest method I found (lazy mode) to solve this issue is to install “libuv” via an “OpenBSD” package.
Hi !
Let’s use Zeek to see the geographic origins of connections to a Tor relay. Of course, I will use a Treemap representation to visualize things.
Hi !
A few months ago, I indicated that I wanted to show a way to represent treemaps in a slightly more advanced form.
Hi !
Recently I had to debug a problem installing R packages with OpenBSD. To put it simply, I needed to use “httpuv-1.6.6 and +” but at the very end of the installation I collected a “core dump”. Since I haven’t found the reason yet, I’ll come back to this in a later post.
Hi !
I recently had another request to make a single PDF file from some small PDF files.
Hi !
It’s time to talk a bit about the Zeek tool again. I’m not going to go into the details of what it is and allows you to do because there are sites that will be much better than me for this.
Hi !
When we talk about seeing things, it is tempting to imagine the presence of images, but this is not always the case. Take the network, for example, knowing what’s happening at the data level involves capturing that data and analyzing it.
