1.1 Establish and implement firewall and router configuration standards that include the following:

Requirement 1: Install and maintain a firewall configuration to protect cardholder data

1.1 Inspect the firewall and router configuration standards and
other documentation specified below and verify that standards
are complete and implemented as follows:

Firewalls and routers are key components of the
architecture that controls entry to and exit from the
network. These devices are software or hardware
devices that block unwanted access and manage
authorized access into and out of the network.
Configuration standards and procedures will help
to ensure that the organization’s first line of
defense in the protection of its data remains