Firewalls are old hat these days. The majority of firewall vendors are now leveraging their firewall technologies and hardware as a basis for security appliances that provide services far in excess of the tasks a humble firewall used to provide.
Likewise a security administrator who mis-configures one of the services may also cause detrimental effects on other services running on that box. Even minor glitches, which may require the redundant system to kick in and take over, can be a nightmare -- particularly when all the various connection states need to be maintained in a mirrored environment. This is where loads really need to be considered. Careful evaluation and testing needs to be performed before committing to any single security appliance.
Gondoruwo
