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👉 You’re considering getting into cybersecurity but don’t know where to start? In this video, we review the 7 most common mistakes beginners make…
You Should Know:
1. Not Mastering Basic Linux Commands
Beginners often jump into advanced tools without understanding Linux fundamentals. Practice these essential commands:
File inspection cat /etc/passwd head -n 5 /var/log/auth.log tail -f /var/log/syslog Network analysis netstat -tuln ss -plant tcpdump -i eth0 Permissions & users chmod 600 sensitive_file.txt sudo adduser new_sec_user passwd --status root
2. Ignoring Log Analysis
Logs reveal attacks. Use these commands to monitor security logs:
Check failed login attempts grep "Failed password" /var/log/auth.log Detect brute-force attacks journalctl -u sshd --since "1 hour ago" | grep "Failed" Analyze web attacks cat /var/log/apache2/access.log | grep "wp-admin"
3. Weak Password Policies
Enforce strong passwords with:
Install & configure password policies sudo apt install libpam-pwquality sudo nano /etc/security/pwquality.conf Set minimum password length minlen = 12
4. Skipping Firewall Configurations
Secure your system with `ufw` or `iptables`:
Enable & configure UFW sudo ufw enable sudo ufw allow 22/tcp sudo ufw deny 3306 Block an IP sudo iptables -A INPUT -s 192.168.1.100 -j DROP
5. Not Using Encryption
Encrypt files and disks:
Encrypt a file with GPG gpg -c secret_document.txt Check disk encryption status lsblk -o NAME,FSTYPE,MOUNTPOINT,ENC
6. Misconfiguring SSH Security
Harden SSH access:
sudo nano /etc/ssh/sshd_config Disable root login PermitRootLogin no Allow only specific users AllowUsers sec_admin
7. Not Practicing in a Lab Environment
Set up a virtual lab with:
Create a Kali Linux VM sudo apt install virtualbox wget https://kali.download/virtual-images/kali-2023.3/kali-linux-2023.3-virtualbox-amd64.ova
What Undercode Say:
Cybersecurity requires hands-on practice. Avoid rushing into advanced topics without mastering basics. Use Linux commands daily, analyze logs, enforce strong passwords, and secure services like SSH. A well-configured lab environment is crucial for testing attacks and defenses safely.
Expected Output:
A structured cybersecurity guide with actionable commands and best practices for beginners.
References:
Reported By: Bertrand Leclercq – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
