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In this lecture of our course, you will learn how to install and create a network sniffer with Skype.

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So the first you can open a terminal and let's understand the few things first.

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So in Linux there are two user privileges, user and root.

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So and the environment for both users is different.

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So higher privileges are required for system level commands to send and receive packets.

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We will need to install Skype as a root user as well as a normal user.

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So we will write our program as a normal user and when we run it, we will run it as a root.

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So as sending packets requires higher privileges in Linux.

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So you can think of it as the running run as administrator equivalent in Windows.

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So you will see what I mean in the moment.

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So to install as a root user you will write sudo pip3 install scapy and here you will enter the password.

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And as you can see here, its requirement already satisfied.

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I already installed scapy.

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So running Pip as a root user can result in a broken permissions and conflicting behavior with the system

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pack age manager and it's recommended to use virtual environment instead.

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So it's you can just this is just a warning here, not an error.

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So here if you don't have installed so this code, this command will install Skype with administrator

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root privileges.

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So once this is done, open your PyCharm or Visual Studio code or your IDE for Python.

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And here to create a new project.

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This is the new project, empty project here.

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And keep in mind that if you face problems you will need to update your systems python with this command

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here sudo apt get update and sudo apt get upgrade and sudo apt get install python three where virtual

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env here and as you can see sudo we need to write this here firstly.

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There's a there's a spelling error here.

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In my system, the Python virtual environment is already installed, but maybe it's not up to date,

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so it's good.

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Action to check the virtual environment and the packages and operate them.

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And here, as you can see, it's 44.6MB.

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It's almost done.

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Fetched 65.4MB in 36 seconds.

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And that's it.

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So after the operation, you said you want to continue?

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Yes.

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As you can see, all of these plugins will update now.

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Here.

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As you can see, it's almost six minutes and 27 seconds.

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And I will stop the lecture here and we'll continue after done.

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And now, since our installation and upgrade process is done, we can go back to PyCharm to write our

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programs.

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So now here we will create a new virtual environment for this specific project.

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But here in PyCharm, we will we are automatically creating this virtual environment when you are creating

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the.

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New project here.

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And as you can see here, we are creating new environment with this here and in with PyCharm.

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You don't need to create that environment.

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So after that, we will firstly install a scapy for this project.

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And here we will open terminal from here and we will type pip3 install CP.

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And as you can see, it's downloaded and installed.

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So in this lecture, we have learned how to how we can install scapy in our virtual environment and

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how to see whether it has been installed properly.

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And you also keep in mind that some functionalities of scapy require the program to be run with higher

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privileges, otherwise they won't work.

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In next lecture we will learn more about how Scapy is used and how we can manipulate network packets

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with Scapy.