In today's business environment, downtime anywhere in the network is simply not an option. This includes your network security enforcement points. This chapter focuses on making firewalls highly available. I will touch on the issues that arise when you have more than one firewall in parallel and outline a strategy for load balancing traffic across multiple firewalls.
By the end of this chapter, you should be able to:
Configure FireWall-1 State Synchronization
Identify vendors that provide High-Availability and load-balancing solutions
Understand asymmetric routing and why it is bad for firewalls
Establish a method for load balancing across multiple firewalls