If you’re looking to enhance your cybersecurity skills without breaking the bank, Cybrary offers a range of free courses that can help you prepare for some of the most sought-after certifications in the industry. These courses often include certificates of completion and, in some cases, access to hands-on labs.
Link: Cybrary Free Cybersecurity Courses
Practice-Verified Commands and Codes
To complement your learning, here are some practical commands and tools you can use to practice cybersecurity skills:
1. Nmap (Network Mapper)
Scan a network for open ports and services:
nmap -sV 192.168.1.1
2. Metasploit Framework
Launch Metasploit and search for exploits:
msfconsole search exploit_name
3. Wireshark
Capture and analyze network traffic:
wireshark
4. Linux Firewall (iptables)
Block an IP address using iptables:
sudo iptables -A INPUT -s 192.168.1.100 -j DROP
5. Password Cracking with John the Ripper
Crack a password hash:
john --format=md5 hashes.txt
6. Windows Command Line for Security
Check open ports on a Windows machine:
[cmd]
netstat -an
[/cmd]
7. Linux File Integrity Check
Use `tripwire` to monitor file changes:
sudo tripwire --check
8. Encrypt Files with GPG
Encrypt a file using GPG:
gpg -c secretfile.txt
What Undercode Says
Cybersecurity is a dynamic field that requires continuous learning and hands-on practice. Platforms like Cybrary provide an excellent starting point for aspiring professionals to gain knowledge and certifications. However, theoretical knowledge must be complemented with practical skills. Here are some additional commands and tools to deepen your expertise:
- Linux Security Tools
- Use `chkrootkit` to scan for rootkits:
sudo chkrootkit
- Harden SSH security by editing
/etc/ssh/sshd_config:sudo nano /etc/ssh/sshd_config
Windows Security Tools
- Use `Windows Defender` to scan for malware:
[cmd]
MpCmdRun.exe -Scan -ScanType 2
[/cmd] Enable Windows Firewall logging:
[cmd]
netsh advfirewall set allprofiles logging filename %windir%\system32\LogFiles\Firewall\pfirewall.log
[/cmd]Network Security
- Use `tcpdump` to capture packets:
sudo tcpdump -i eth0 -w capture.pcap
Analyze network traffic with
tshark:tshark -r capture.pcap
Incident Response
- Use `logwatch` to monitor system logs:
sudo logwatch --detail high --mailto [email protected]
Check for suspicious processes with
ps:ps aux | grep suspicious_process
Web Application Security
- Use `OWASP ZAP` for web vulnerability scanning:
zap.sh
- Test for SQL injection with
sqlmap:sqlmap -u http://example.com/page?id=1
By combining free resources like Cybrary with hands-on practice, you can build a strong foundation in cybersecurity. Remember, the field is ever-evolving, so staying updated with the latest tools, techniques, and certifications is crucial. For further reading, explore Cybrary’s official website and other cybersecurity blogs like Krebs on Security.
References:
Hackers Feeds, Undercode AI
