A firewall is a network security device that analyzes incoming and outgoing network traffic and determines whether specific traffic should be allowed or blocked based on a set of security rules.
For more than 25 years, firewalls have served as the first line of defense in network security. They create a barrier between secure, controlled internal networks that can be trusted and untrustworthy external networks like the Internet.
A firewall might be hardware, software, or a combination of the two.
The CEH course will teach you the most up-to-date commercial-grade hacking tools, techniques, and methodologies used by hackers and information security professionals to lawfully hack an organization.See More
The Linux Professional Institute is a non-profit organization based in Canada that was founded on October 25, 1999 to provide certifications for Linux, BSD, and open source software-based technologies.