Hardening Basics Part 1 TryHackme
By Shamsher khna This is a Writeup of Tryhackme room “Hardening Basics Part 1”
Machine Credential spooky:tryhackme
Task 11. Chapter 1 Quiz
Question 1. What group are users automatically added to in Ubuntu?
Answer: sudo
Question 2. What would be the command to add an existing user, nick, to the sudo group? You’re running as root
Answer: usermode -aG sudo nick
Question 3.What command as a user can we enter to see what we are allowed to execute with sudo?
Answer: sudo -l
Question 4. Where is the sudo policy file stored?
Answer: /etc/sudoers
Question 5. When in visudo and you see %____, what does the % sign indicate that you are dealing with?
Answer: group
Question 6. This Alias lets the user assign a name, like “ADMINS” to a group of people
Answer: user
Question 7. Which Alias allows you to create a set of commands that you can then assign to a User Alias?
Answer: command
Question 8. Yey/Ney — emacs has a shell escape
Answer: Yey
Question 9. What is the minimum recommended password length set by NIST?
Answer: 8
Question 10. When using the pwhistory module, which file will contain the previous passwords for the user?
Answer: opasswd
Question 11. What principle states that every user only has enough access to do their daily duties and tasks
Answer: principle of least privilege
Task 15. Basic Uncomplicated Firewall for Ubuntu & Chapter 2 Quiz
Question 1. This type of Firewall typically has two NIC cards
Answer: Network-Based
Question 2. This type of Firewall is typically installed on a host computer and rules apply to that specific host only
Answer: Host-Based
Question 3. Web Application Firewalls help add an extra layer of security to your web servers. Where should these be installed?
Answer: demilitarized zone
Question 4. iptables is not the name of the Linux Firewall. What is the framework that iptables allows us to interact with?
Answer: netfilter
Question 5. This 3 letter acronym is a set of rules that defines what the Firewall should allow and what it should deny
Answer: ACL
Question 6. Which iptables option allows us to keep track of the connection state?
Answer: — ctstate
Question 7. Which iptable Chain is responsible for packets on the local network that are being carried onwards?
Answer: Forward
Question 8. Which table mashes up the packets as they go through the Firewall?
Answer: mangle
Question 9. What is the last rule that should be added to an access control list?
Answer: implicity deny
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