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Barracuda NextGen Firewall X

This Firmware Version Is End-Of-Support

As of December 1st, 2018, all new sales for Barracuda NextGen Firewall X Series products have ceased. Only renewals of software and hardware subscriptions for a maximum of one year are available for a limited time. December 1st 2019: All Barracuda Firewall X-Series sales will cease; neither new sales nor any renewals will be available. If you currently hold a maintenance and support contract, you will continue to receive our award-winning support and services until your contract expires, or until the End of Life definition as described in the End of Support and End of Life Information.

How to Set Up a Guest Access Confirmation Page

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When setting up a guest network, you can configure the Barracuda NextGen Firewall X-Series to use a confirmation page that prompts guests to agree to the Terms of Service before they can access the network. A confirmation page is typically used to grant network access to anonymous users.

Guest_access_conf.png

Before You Begin

  • Ensure that the X-Series Firewall has one unused network interface (Wi-Fi, Ethernet, or virtual, e.g., ath3, p3, or p3.100).
  • Identify the guest network that you want to use (e.g., 192.168.225.0/24).

Step 1. Set up the Guest Network Interface

You can use Wi-Fi or a wired network for guest access.

Configure a static network interface or a Wi-Fi interface. In the Static Interface Configuration, ensure that you specify the following settings:

  • Network – The guest network (e.g., 192.168.225.0/24).
  • Services to Allow – Select DNS Server.
  • Classification – Click Trusted.

Step 2. Enable the DHCP Server for the Guest Network

To automatically assign IP addresses for guests, enable a DHCP server for the guest network.

  1. Go to the NETWORK > DHCP Server page.
  2. In the DHCP Server section, enable the DHCP server.
  3. In the Add DHCP Server Subnet section, configure the DHCP subnet. Ensure that you specify the following settings:
    • Beginning IP Address and Ending IP Address – The range of IP addresses to be assigned to clients. For example, if your guest network is 192.168.225.0 with a netmask 255.255.255.0, the Beginning IP Address is 192.168.225.1 and the Ending IP Address is 192.168.225.254.
    • DNS Servers – The IP addresses of the DNS servers.
  4. Click Save. The guest network subnet appears in the DHCP Server Subnets section.

For more information on setting up a DHCP server, see How to Configure the DHCP Server.

Step 3. Set up the Guest Network

Specify the network using the confirmation page for guest access.

  1. Go to the USERS > Guest Access page.
  2. In the Guest Networks section, select your guest network (e.g., 192.168.225.1/24) from the Network column.
  3. From the Type column, select Confirmation Message.
  4. Click Add.
  5. Click Save. The network then appears in the second Network table.

confirmation_page.png

Step 4. (Optional) Configure the Confirmation Page

On the USERS > Guest Access page, you can configure the page that is displayed to guests when they log into the network.

In the Login Page Options section, edit the Welcome Message and upload a Welcome Image. The image can be up to 1 MB and must be in JPG, GIF, or PNG format. The suggested image size is 170 x 40 pixels.

Step 5. Create a PASS Access Rule for DNS Traffic

Create an access rule to always allow DNS traffic from the guest network to the Internet.

  1. Go to the FIREWALL > Firewall Rules page.
  2. Click Add Access Rule to create a new access rule.
  3. In the Add Access Rule window, enter a name for the rule. E.g.: GUEST-DNS-2-INTERNET
  4. Specify the following settings:

    ActionConnectionAdjust BandwidthSourceNetwork ServicesDestination
    AllowDefault (SNAT)InternetGuest NetworkDNSInternet

    GuestDNS-2-INTERNET.png

    To allow connections from the guest network to the Internet, the X-Series Firewall must perform source-based NAT. The source IP address of outgoing packets is changed from that of the client residing in the network to the WAN IP address of the X-Series Firewall, so the connection is established between the WAN IP address and the destination IP address. The destination address of reply packets belonging to this session is rewritten with the client's IP address.

  5. At the bottom of the rule editor window, click Save.

Step 6. Create a PASS Access Rule for Authenticated Users

Create an access rule to allow HTTP/S traffic from guest network users to the Internet.

  1. Go to the FIREWALL > Firewall Rules page.
  2. Click Add Access Rule to create a new access rule.
  3. In the Add Access Rule window, enter a name for the rule. E.g.: GUESTNET-2-INTERNET
  4. Specify the following settings:

    ActionConnectionAdjust BandwidthSourceNetwork ServicesDestination
    AllowDefault (SNAT)InternetGuest NetworkHTTP+SInternet

    GuestNET-2-INTERNET.png

  5. In the rule editor window, click the ADVANCED tab.
  6. In the Valid for Users section, select All Authenticated Users and click +.
    user_access.png
  7. At the bottom of the rule editor window, click Save.

Because rules are processed from top to bottom in the rule list, ensure that the rule to allow DNS traffic is placed above the rule to allow users, and that both rules are placed above the BLOCKALL rule; otherwise, the rules are blocked. For more information, see Firewall Rules Order.

rules_order.png

After adjusting the order of the rules, click Save.

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