Also understand the capacity of your firewalls and how other
resource-consuming features such as decryption affect the number of
connections each firewall can control. As a general rule, the closer
a firewall is to the perimeter, the greater its capacity needs to be
because it handles more traffic. The datasheet for each firewall
model includes the total new sessions per second (CPS) the firewall supports
and the
Firewall Comparison Tool enables
you to compare the CPS (and other metrics) of different firewall models.