This is just for fun and practice. Let’s take a look at how docker implements the bridge networks. The environment I am using the same VM as before, running Ubuntu. I have docker installed with o...

In the previous post we looked at how to check network connections for a particular process from the /proc filesystem. Now let’s take a look at the other file descriptors and see what information w...

When I want to see the connections opened by some process I normally use commands like lsof and ss. But these commands are not always available. In these scenarios, I found that it’s not that diffi...

Many times while troubleshooting, we need to test if the network connection to a specific service is working or not. The result from such a test can show if I’m dealing with a problem on the networ...