Configuring SSL VPN: Remote VPN with FortiGate

📖 Medium https://lnkd.in/egc49zh5

As part of my firewall journey, I explored setting up an SSL VPN on FortiGate to enable secure remote access for users. This hands-on experience helped me understand key configurations, including:

• 🎯 Web Mode Configuration for browser-based VPN access
• 🔐 Creating and Installing a Server Certificate for secure authentication
• ⚙️ User and Group Policies to control access
• 🌍 Firewall and Routing Configurations for seamless connectivity

You Should Know:

1. Web Mode Configuration

To enable Web Mode for SSL VPN on FortiGate, use the following commands:

config vpn ssl settings 
set tunnel-ip-pools "SSLVPN_TUNNEL_ADDR1" 
set tunnel-ipv6-pools "SSLVPN_TUNNEL_IPv6_ADDR1" 
set source-interface "port1" 
set source-address "all" 
set default-portal "web-access" 
end 

This allows users to access the VPN via a web browser without installing a VPN client.

#### **2. Creating and Installing a Server Certificate**

Generate a self-signed certificate or use a trusted CA certificate:

config vpn certificate local 
edit "SSL_VPN_CERT" 
set certificate "--BEGIN CERTIFICATE-- ... --END CERTIFICATE--" 
set private-key "--BEGIN RSA PRIVATE KEY-- ... --END RSA PRIVATE KEY--" 
next 
end 

Apply the certificate to the SSL VPN settings:

config vpn ssl settings 
set servercert "SSL_VPN_CERT" 
end 

#### **3. User and Group Policies**

Create user groups and assign policies:

config user group 
edit "SSL_VPN_Users" 
set member "user1" "user2" 
next 
end 

Configure firewall policies for SSL VPN access:

config firewall policy 
edit 1 
set name "SSL_VPN_Policy" 
set srcintf "ssl.root" 
set dstintf "port1" 
set srcaddr "all" 
set dstaddr "all" 
set action accept 
set schedule "always" 
set service "ALL" 
set groups "SSL_VPN_Users" 
next 
end 

#### **4. Firewall and Routing Configurations**

Ensure proper routing for VPN traffic:

config router static 
edit 1 
set dst 0.0.0.0/0 
set gateway 192.168.1.1 
set device "port1" 
next 
end 

### **What Undercode Say:**

Configuring SSL VPN on FortiGate is a critical skill for network and security engineers. It ensures secure remote access while maintaining robust encryption and access control. The steps above provide a solid foundation for setting up SSL VPN, but always test configurations in a lab environment before deploying them in production. For further reading, refer to the FortiGate documentation.

Explore more about SSL VPN and FortiGate configurations in the detailed Medium article: https://lnkd.in/egc49zh5.

References:

Reported By: Malinduduwage Fortigate – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅

Join Our Cyber World:

💬 Whatsapp | 💬 Telegram