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What is Palo Alto FW High Availability?

FOR IMMEDIATE RELEASE
January 10, 2022


What is Palo Alto FW High Availability?


What is Palo Alto FW High Availability?

What is Palo Alto FW High Availability?
High availability (HA), is a configuration in which two firewalls are connected and their configurations are synchronized. This prevents your network from experiencing a single point failure. A heartbeat link between the firewall peers allows for smooth failover in the event of one of the firewall peers going down. Two firewalls in a high availability pair provides redundancy and business continuity.
You can reduce downtime by ensuring that a peer firewall is available in case the primary firewall fails. The firewalls in a pair use dedicated or in-band ports to synchronize data (network, object, policy configurations) and keep state information.
Firewall-specific settings such as management interface IP addresses, administrator profiles, HA configuration, log data, ACC information, and other configurations are not shared among peers.
Two firewalls from Palo Alto Networks can be connected to create an HA pair. Both HA peers must be running the same version PAN-OS.
A failover occurs when one firewall in a HA pair goes down and the peer firewall assumes responsibility for traffic protection. These are the circumstances that can cause a failover. Palo Alto Networks Certified Network Security Engineer (PCNSE)
One or more of these interfaces fail
The firewall is not responding correctly to polls' heartbeats
It is impossible to access any of the designated destinations for firewalls
Hardware fails

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