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Barracuda CloudGen Firewall

How to Make an F-Series Firewall Centrally Manageable Without a Control Center

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If you are managing only one or two remote Barracuda NextGen F-Series Firewalls and are not using a Barracuda NextGen Control Center, use Site-to-Site VPN tunnels to securely manage the remote units. Exchange the box certificates to authenticate the Site-to-Site VPN tunnel.

Step 1. Export the Public Key

Export the box identification certificate from the remote box. The certificate is used to authenticate the remote Barracuda NextGen Firewall F-Series.

  1. Go to CONFIGURATION > Configuration Tree > Box > Identity.
  2. From Box Private Key, click Ex/Import and select Export Public to Clipboard.

Step 2. Configure a Site-to-Site Tunnel at the VPN Server Peer

Configure the Site-to-Site VPN tunnel on the central unit. The remote management tunnel is a site-to-site tunnel.

  1. Go to CONFIGURATION > Configuration Tree > Box > Virtual Servers > your virtual server > Assigned Services > VPN-Service > Site to Site
  2. Click Lock.
  3. Right-click the table and select New TINA tunnel.
  4. Enter a Name for the tunnel.
  5. Under the Local Networks tab, select Passive from the Call Direction list.
  6. In the Network Address section, enter the LAN and any other connected private subnets you wish to connect from, and click Add.
  7. Click the Local tab.
  8. In the IP Address or Interface used section, select or enter the external IP address which the remote box will connect to (reference: first or second server IP, or select Explicit List (ordered) and enter below).
  9. Click the Peer Identification tab. 
  10. From Public Key, click Ex/Import and select Import from Clipboard.
    • If necessary, change Identity > Identification Type: Public Key.
  11. Click the Identify tab.
  12. From the Server Protocol Key list, click Ex/Import and select an RSA key or create a new key.
    • Keys in the dropdown menu are created/imported under VPN Settings > Service Certificates/Keys.
  13. In the Server Protocol Key section, export the public key to clipboard.
  14. Click the Remote tab.
  15. In the Remote Peer IP Addresses field, enter either 0.0.0.0/0 (if the remote partner uses a dynamic IP), or the external IP of the remote partner (if static), and click Add.
  16. Click the Remote Networks tab.
  17. Choose a free IP address for your virtual IP (VIP) address, enter this address in the Remote Network section, and click Add.

    The VIP may be either routed (it is within a network range not used on either local or remote sites) or it may be part of the local LAN connected to your central firewall. In this case, you must create a Proxy ARP to be able to connect (see: How to Create Proxy ARP Objects). Do not use the remote Management IP from the remote LAN.

  18. Click OK.
  19. Click Send Changes and Activate.

For more information about TINA tunnels, see How to Create a TINA VPN Tunnel between F-Series Firewalls.

Step 3. Configure Remote Access

Configure the remote partner to connect to the central firewall:

  1. Go to CONFIGURATION > Configuration Tree > Box > Network.
  2. In the left menu, select Management Access.
  3. In the left menu, expand Configuration Mode, and click Switch to Advanced.
  4. Click Lock.
  5. From the Enable Tunnel list, select yes.
  6. In the Virtual IP (VIP) field, enter the VIP address chosen in Step 2.17.
  7. From Tunnel Details, click Set.
    1. From VPN Server Key, click Ex/Import and select Import from Clipboard.
    2. In the VPN Server table, add the point of entry to reach the central gateway (defined under step 2.8).
    3. In the Remote Networks table, add the remote LANs (defined under step 2.7).
    4. Add an IP address of the central firewall to the list of Reachable IPs. This IP address will be used as probing target to keep the tunnel alive. If no probing target is defined, the tunnel will be restarted periodically.
  8. Click OK.
  9. Click Send Changes and Activate.

Go to VPN > Status and verify that the site-to-site tunnel is ACTIVE in the state column.

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