Learning Linux distribution information

The lsb_release command is used to get information about the operating system on Linux. Using this command alone does not mean anything, for this, it is necessary to use the relevant parameters after the command.

lsb_release [parametre]

Let’s see the lsb_release --help the command to see the available parameters:

If we want to see all the information, the lsb_release -a the command is used for this.

Learning kernel knowledge on Linux

It is learned by using the uname (Unix Name) the command to learn kernel information.

Before starting the routing and switching issues, it is useful to learn the basic configuration commands first. The operating system running on Huawei routers and switches is called VRP (Versatile Routing Platform).

Switches and routers are opened by default in user-view mode at first boot. In this mode, basic settings can be made, display commands can be used and operating system settings can be viewed. When working in user-view mode, the workspace will appear within the <> sign.

What is localhost, what does it do?

Localhost is the computer’s ability to operate as a server thanks to the software installed on the computer. We cannot run PHP files on a normal computer and do not perform operations on the database. Thanks to the installation of the localhost, our computer will gain a server feature and we will be able to run files such as PHP, MySQL.

We can access the localhost by typing http://localhost in our browser or at http://127.0.0.1.

John Ripper is a fast password cracker currently available for many variants of Unix, macOS, Windows, DOS, BeOS, and OpenVMS. Its primary purpose is to detect weak Unix passwords. In addition to the hash type of several crypt passwords most commonly found in various Unix codes, Kerberos / AFS and Windows LM hashes, as well as DES-based tripcodes and hundreds of additional hash and encryption versions in -jumbo.

In this article, we will now see how to crack and obtain a PDF password by attacking Brute Force with John The Ripper.

Scenario:

There are 2 WAN ports belonging to the Mikrotik and the IP information will be sent to the specified IP address by SMS /mail-in both ports.
If the device is rebooted in any way, the information of this situation will be sent as SMS when it reaches the time specified in the uptime variable.

Mikrotik reboot alert / UPTIME CHECK SCRIPT, with the prevention of sending FALSE ALARM with optional Email and SMS Alert.
You need to use Gmail for sending mail, and an SMS Platform for Sending Sms.