Configuring network settings

The Network submenu provides options to configure network connectivity and administrative access to the web UI or CLI of the FortiMail unit through each network interface.

This section includes:

• About IPv6 Support
• About the management IP
• About FortiMail logical interfaces
• Configuring the network interfaces
• Configuring link status monitoring
• Configuring static routes
• Configuring DNS
• Configuring port forwarding

About IPv6 Support

IP version 6 (IPv6) handles issues that weren’t around decades ago when IPv4 was created such as running out of IP addresses, fair distributing of IP addresses, built-in quality of service (QoS) features, better multimedia support, and improved handling of fragmentation. A bigger address space, bigger default packet size, and more optional header extensions provide these features with flexibility to customize them to any needs.

IPv6 has 128-bit addresses compared to IPv4’s 32-bit addresses, effectively eliminating address exhaustion. This new very large address space will likely reduce the need for network address translation (NAT) since IPv6 provides more than a billion IP addresses for each person on Earth. All hardware and software network components must support this new address size, an upgrade that may take a while to complete and will force IPv6 and IPv4 to work side-by-side during the transition period.

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The FortiMail 4.0 MR3 release supports the following IPv6 features:

• Network interface
• Network routing
• High Availability
• DNS
• Admin access
• Webmail access
• Mail routing — multiple combinations of IPv4/6 Server, IPv4/6 Remote Gateway
• Access Control Lists
• Grey list
• Local sender reputation
• IPv6 based policies
• Black/white list
• LDAP
• IP pool (starting from 4.0 MR3 Patch 3 release)

FortiMail will support the following IPv6 feature in future releases:

• Port forwarding for IPv6
• FortiGuard antispam database populated with IPv6 addresses