FortiGate SSL VPN
Guidance
DocumentFortiGate
Overview:
DocumentFortiGate SSL VPN enables secure remote access to enterprise networks, ensuringprotection against various attack scenarios.
FortiGate SSL VPN helps protect against multiple security threats, such as brute forceattacks, exploits, and unauthorized access, by offering detailed profiling of user behavior.
Security Considerations:
Brute Force Protection: Implement measures to prevent brute force attempts on the system.
Exploit Prevention: Block malicious activities targeting system vulnerabilities.
Geolocation-Based Restrictions:
– Option 1: Deny access to countries with no business relevance.
– Option 2: Enable geolocation restrictions for accessing specific network resources.
– Option 3: Strengthen monitoring and analysis for suspicious activities from specific countries.
How to Configure Geolocation in FortiGate SSL VPN:
1. Setting Up IP Filtering:
– Access Policies & Objects.
– Define new policies under "Services" to restrict access based on
– TCP/UDP 443 (SSL-VPN traffic)
2. Blocking Specific Countries:
– Navigate to *Policy & Objects > Addresses.
– Create a new address group (e.g., “Blocked_Countries”).
– In the "Geography" tab, specify the countries you want to block.
3. Configuring SSL VPN Settings
– Go to the VPN tab and open SSL-VPN Settings.
– Under Restrict Access, select "Limit Access to Specific Countries" and apply the geolocationrestrictions.
4. Validate Configuration
– ConfigurationTest and verify the configurations to ensure all blocked countries areappropriately restricted.
Best Practices:
– Enable Multi-Factor Authentication (MFA) to secure VPN access.
– Regularly monitor suspicious activity through SIEM integration.
– Enforce strict access policies for all VPN users to minimize security risks.
Key Insights:
– Geolocation-based restrictions in FortiGate SSL VPN allow administrators to improve security and prevent unauthorized access.
– Assisting tools like dashboards and automated alerts make it easier to manage incidents efficiently.
