What is a Firewall? | Types of Firewall? | InfosecTrain

A firewall is a hardware or software device that may be configured to block data from specified sites, applications, or ports while allowing important data to get through. Firewalls protect networks with varying levels of trust from unauthorized access. They use security measures to prevent malicious actors from gaining access to private networks connected to the Internet. Facebook: https://www.facebook.com/Infosectrain/ Twitter: https://twitter.com/Infosec_Train LinkedIn: https://www.linkedin.com/company/infosec-train Instagram: https://www.instagram.com/infosectrain/ Telegram: https://t.me/infosectrains