FortiGate
FortiGate Next Generation Firewall utilizes purpose-built security processors and threat intelligence security services from FortiGuard labs to deliver top-rated protection and high performance, including encrypted traffic.
btey
Staff
Staff
Article Id 258239
Description This article describes how to setup DNS Database(Split DNS) for SSL VPN Client.
Scope FortiGate.
Solution

Diagram:

 

Internet ---- <SSLVPN Connection> ------ [Port1]FortiGate[Port3 IP x.x.3.23]----------Internal

 

1) Enable 'DNS Database' from Feature Visibility:

 

Feature Visibility.PNG

 

2) Go to Network -> DNS Server:

 

DNS Server.PNG

 

3) Go to DNS Service on Interface, select 'New',  Add port3 and SSL-VPN tunnel interface:

 

Internal Interface.PNG

 

SSLVPN Interface.PNG

 

DNS Services Interface.PNG

 

4) Go to DNS Database and select 'New':

Configure DNS Zone and Domain Name.

 

DNS Zone.PNG

5) Go to DNS Entries and select 'New':

 

DNS Entry.PNG

 

6) Select 'OK':

 

DNS Zone_ok.PNG

 

7) Go to SSL-VPN Portals, select the respective portal and enable DNS Split Tunneling:

 

Enable Spit DNS.PNG

 

8)  Go to Split DNS, select 'New' and enter the domains and FortiGate port3 interface IP:

 

SplitDNS.PNG

 

9) Create a firewall policy to allow SSL VPN client to access DNS server IP x.x.3.23:

 

fw policy.PNG

10) Connect to FortiClient SSLV PN. Test ping to pc01.labtest.local.

SSL VPN client can now resolve the domain name from FortiGate DNS Database:

 

DNS resolved.PNG

 

 

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