FireWall
A firewall is a security system that monitors and controls incoming and outgoing network traffic based on predefined security rules.

Functions of a Firewall
- Blocks unauthorized access
- Monitors network traffic
- Prevents cyber threats (malware, hacking attempts)
- Enforces security policies
- Filters harmful content
Most Common Firewall In Sri Lanka
Fortinet is a leading cybersecurity company known for its FortiGate firewalls and network security solutions. It provides enterprise-level firewall protection, intrusion prevention, and threat intelligence to businesses of all sizes.
Key Features of Fortinet (FortiGate) Firewalls
- Next-Generation Firewall (NGFW) – Includes deep packet inspection (DPI), intrusion prevention (IPS), and web filtering.
- Unified Threat Management (UTM) – Combines firewall, antivirus, VPN, content filtering, and more.
- AI-Powered Security – Uses FortiGuard AI-driven threat intelligence to detect and mitigate cyber threats in real time.
- Secure SD-WAN – Provides fast and secure branch connectivity, optimizing bandwidth and reducing costs.
- Zero Trust Network Access (ZTNA) – Ensures only authorized users and devices can access the network.
- Cloud Security – Protects cloud environments, including AWS, Azure, and Google Cloud.
Sophos is a cybersecurity company that provides firewalls, endpoint protection, and network security solutions. Its Sophos XG Firewall (now Sophos Firewall) is a popular choice for businesses looking for advanced threat protection, secure VPN access, and easy management.
Key Features of Sophos Firewalls
- Next-Generation Firewall (NGFW) – Includes deep packet inspection (DPI), intrusion prevention (IPS), and web filtering.
- Synchronized Security – Integrates with Sophos Endpoint Protection to detect and isolate compromised devices automatically.
- AI-Powered Threat Detection – Uses Sophos Labs Threat Intelligence to block malware, ransomware, and zero-day attacks.
- Xstream Architecture – Speeds up traffic inspection without slowing down the network, ideal for high-bandwidth applications like CCTV streaming.
- SD-WAN Support – Optimizes bandwidth usage for remote offices and branch networks.
- Web and Application Filtering – Blocks malicious websites and limits non-work-related browsing.
- Cloud-Based Management – Managed through Sophos Central, a user-friendly cloud platform for centralized security control.

