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Firewall
Firewall
Q1: What is a firewall?
A firewall is a security device that monitors and controls incoming and outgoing network traffic based on predefined security rules — it acts as a barrier between a trusted network and an untrusted network (like the internet).
Q2: What are the types of firewalls?
Hardware Firewalls – physical devices installed between your network and the internet.
Software Firewalls – programs installed on computers or servers.
Next-Generation Firewalls (NGFW) – advanced firewalls that include features like intrusion prevention and deep packet inspection.
Q3: Why is a firewall important?
It protects your network from unauthorized access, malware, hacking attempts, and other cyber threats.
Q4: How does a firewall work?
It inspects data packets entering or leaving your network and allows or blocks them based on defined security rules.
Q5: Can a firewall stop viruses?
Firewalls can block suspicious or malicious traffic, but antivirus software is still required for full protection on individual devices.
Q6: What are some popular firewall brands?
Cisco, Fortinet, Palo Alto Networks, Sophos, SonicWall, and Check Point are among the leading firewall manufacturers.
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