SMB SSL-VPN: Setting up SSl-VPN behind SonicWall UTM Appliance with multiple portals with unique Ce

03/26/2020 3 12275

DESCRIPTION:
SMB SSL-VPN: Setting up SSl-VPN behind SonicWall UTM Appliance with multiple portals with unique Certificate per portal.

RESOLUTION:

Introduction

This technote is an example of how to stup an SSL-VPN device with multiple portals, and a unique certificate per portal behind a SonicWall UTM device.
It is possible to set up 2 portals with 2 separate certificates if you have more that one public IP available to use. In order to do this, first import the certificates. 

Setup

1) Create and import certificates
For step by step instructions for importing certificates click here SSL_VPN: Creating and Installing Digital Certificates on SonicWall SSL VPN Appliances

2) Create the portals
In this example we’ll create two portals, one for sales and one for accounting.

Go to Portals and click add. 
In this example we will call the portal sales. 
Modify the HTML for the login message if you would wish to customize the login page. 
Now click on the virtual host tab. 
Type in sales for the Virtual Host Domain Name. 
Set the drop down menu for Virtual Host Interface to X0. 
For the virtual host IP put in an IP address that is in the same subnet as the SSL's X0 IP, in this example 192.168.200.254. 
Now choose the sales certificate from the Virtual Host Certificate drop down menu. 
Click OK.

Repeat this process for accounting, only make the virtual host IP different than sales, in this case 192.168.200.253.

3) Setup the UTM device

In order to complete this install, you will need to make Nat policies mapping the public IP’s to the private virtual IP’s of the Portals on the SSL.

Create an inbound and outbound NAT policy per portal.
In this example two NAT policy pairs must be created, one for sales and one for accounting. 
In this example we will Nat the public IP of 75.42.50.26 to the virtual host IP for sales which was 192.168.200.254. and we will Nat the public IP of 75.42.50.25 to the virtual host IP for accounting which was 192.168.200.253.

Inbound NAT Policy

From Network>Nat policies click Add.

Original source is.............. any

Translated source is .........Original

Original destination is.......Create a new address object

Call the object.....................sales public

Zone assignment is ............WAN

Type is................................. Host

Ip Address...........................75.42.50.26

Click OK.

Translated destination is.....Create a new address object

Call the object..................... sales private

Zone assignment is.............. LAN

Type is..................................Host

Ip address is..........................192.168.200.254

Click OK

Original service is.................HTTPS

Translated service is..............Original

Inbound interface is..............Wan or X1

Outbound interface is............Any

Comment...............................Inbound sales ssl

Click OK

Outbound NAT policy

From Network>Nat policies click Add.

Original source is .................sales private

Translated source is ...............sales public

Original destination is ............Any

Translated destination is.........Original

Original service is ....................HTTPS

Translated service is ................Original

Inbound interface is..................LAN or X0

Outbound interface is................WAN or X1

Comment...................................Outbound sales ssl

Click OK.

 Above needs to be repeated for the Accounting portal using address object pair: accounting public/private 75.42.50.25/192.168.200.253

In our example the SSL-VPN device is on the LAN zone, thus WAN to LAN firewall rules will also be needed to allow HTTPS to the public IP address objects “sales public” and “accounting public” 

From Firewall>Access Rules in matrix view, WAN to LAN.

Click Add

Action is....................................Allow

Service is ..................................HTTPS

Source is....................................Any

Destination is.............................sales public

Check the “Allow Fragmented Packets” check box.

Click OK

Duplicate this rule for a destination of accounting public.