Arguably the most important new feature in this build is the floating IP support implemented with Virtual Router Redundancy Protocol (VRRP). This is the last piece of the puzzle in making the DHCPatriot completely high availability.
Previously, the router would need to be changed to force authentication traffic to one DHCPatriot device or the other in the case of outage. Using VRRP allows a third IP address to “float” between the two devices. This allows the router to be configured to force authentication traffic to this third IP address. The IP address never goes down as long as at least one DHCPatriot device is functional.
Other enhancements in this version include: Searchable Option 82 information that is stored with the sessions; Template based configuration of static address definitions in standard DHCP for quick configuration of ONT networks, for example; Optional protection of the authentication page against automated clients via a simple math problem; Checking stored credentials against the RADIUS server during an un-suspend operation; Optionally send RADIUS ALIVE (interim-update) packets upon DHCP client lease renewal; Optional RADIUS forwarding to external devices that need a RADIUS accounting stream.
Patch notes for this release:
- Floating IP (VRRP) implemented. It is now possible to add a third IP address to the DHCPatriot system that will float between the two devices. This IP address should be used with the captive portal page and possibly as the destination address when administrating the machine. Restrictions to using VRRP are that the DHCPatriot system devices must both be in the same subnet and the floating IP must be in that same subnet as well.
- Optional simple page for protecting the database from being accessed by pre-auth / unauthenticated automated clients such as Weatherbug. This page asks a simple math problem before proceeding to the actual authentication page for pre-auth users. The page has no images and no database access. Automated clients such as Weatherbug will not answer the question and proceed to the login page. Continue reading