The Barracuda NextGen Firewall F-Series supports IPv6 along with its predecessor IPv4. By default, IPv6 is disabled and only traffic from IPv4 networks is accepted. When IPv6 is enabled, the Barracuda NextGen Firewall F-Series accepts both IPv4 and IPv6 traffic. IPv6 addresses can only be used via Barracuda NextGen Admin and not via command line tools. To configure IPv6 services, you must first assign non-link-local IPv6 addresses to the interfaces. IPv6 is supported for the following services:
- Firewall Service
- VPN Service (envelope only)
- Virus Scanner (not in combination with Application Control)
- DNS Service
- DHCP Service
- DHCP Relay
- Dynamic Routing: OSPF/RIP/BGP
- SNMP Service
- Mail Gateway
- NextGen Firewall F-Series Management
- NextGen Firewall F-Series High Availability Clusters
- HTTP Proxy (forwarding mode only)
By default, IPv6 is disabled on the F-Series Firewall and Control Center. After enabling IPv6, all interfaces automatically create link local IP addresses. A reboot is required after enabling IPv6 to ensure the kernel modules are loaded properly.
For more information, see How to Enable IPv6.
Stateless IPv6 autoconfiguration
The F-Series Firewall can act as the router in the IPv6 stateless autoconfiguration process. The Firewall answers the router solicitation request on the link local address of the interface and helps the client determine its global Internet address.
For more information, see How to Configure IPv6 Stateless Autoconfiguration.
Stateful IPv6 autoconfiguration with DHCPv6
The F-Series Firewall can act as the router in the IPv6 stateful autoconfiguration process. The Firewall answers the router solicitation request on the link local address of the interface and sends the client a prefix. The rest of the configuration parameters are then retrieved by the client from the DHCPv6 server.
For more information, see How to Configure IPv6 Stateful Autoconfiguration with DHCPv6
Configure IPv6 management IP address
In addition to the IPv4 management IP address, you can configure an IPv6 management IP address and use it to manage your F-Series Firewall and Control Center.
For more information, see How to Add an IPv6 Management IP Address.