Linux System Hardening

Walkthrough summary

Linux System Hardening TryHackMe walkthrough with 20 answered prompts and lab methodology notes.

Sample prompts covered

• What command can you use to create a password for the GRUB bootloader?
  Open the walkthrough page to inspect the full answer and command flow.
• What does PBKDF2 stand for?
  Open the walkthrough page to inspect the full answer and command flow.
• What does LUKS stand for?
  Open the walkthrough page to inspect the full answer and command flow.
• We cannot attach external storage to the VM, so we have created a /home/tryhackme/secretvault.img file instead. It is encrypted with the password 2N9EdZYNkszEE3Ad. To access it, you need to open it using cryptsetup and then mount it to an empty directory, such as myvault. What is the flag in the secret vault?
  Open the walkthrough page to inspect the full answer and command flow.
• There is a firewall running on the Linux VM. It is allowing port 22 TCP as we can ssh into the machine. It is allowing another TCP port; what is it?
  Open the walkthrough page to inspect the full answer and command flow.