👉🔥👨‍💻A firewall is a network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules. It acts as a barrier between a trusted internal network and untrusted external networks, such as the internet, to prevent unauthorized access and protect against cyber threats.
👉Here are some types of firewalls with corresponding emojis:
1. Packet Filtering Firewall 📦🔒- Examines packets of data and filters them based on predefined rules.
2. Stateful Inspection Firewall 🔄🔍:Keeps track of the state of active connections and makes decisions based on the context of the traffic.
3. Proxy Firewall 🌐🔒:- Acts as an intermediary between internal and external systems.
4. Application Layer Firewall 🔄📲🔒:Operates at the application layer of the OSI model.Analyzes and filters traffic based on the specific application or service.
5. Next-Generation Firewall🔮🔥:
Integrates additional features beyond traditional firewalls, such as intrusion prevention, deep packet inspection, and application awareness.