Configuring the active-standby pair of firewalls

At this point, I am going to assume the firewalls have undergone the out-of-the-box initial setup and hardening. The details on getting this accomplished can be found at https://www.cisco.com/c/en/us/support/security/asa-5500-series-next-generation-firewalls/products-installation-and-configuration-guides-list.html:

  1. Configure the EtherChannel interfaces for the enterprise and Industrial Zones.
  1. Connect to the ASA firewall with ASDM and navigate to the interfaces configuration page and add an EtherChannel interface for the Enterprise Zone interface:
  1. Note that Security Level is set to 0, which ...

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