Cisco Firepower 2100, Getting Started Manual

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The following example shows a default route for IPv4. In this example, isp-gateway is a network object that
identifies the IP address of the ISP gateway (you must obtain the address from your ISP). You can create this
object by clicking
Create New Network at the bottom of the Gateway drop-down list.
Figure 8: Default Route
Step 5 Choose Policies and configure the security policies for the network.
The device setup wizard enables traffic flow between the inside-zone and outside-zone, and interface NAT
for all interfaces when going to the outside interface. Even if you configure new interfaces, if you add them
to the inside-zone object, the access control rule automatically applies to them.
However, if you have multiple inside interfaces, you need an access control rule to allow traffic flow from
inside-zone to inside-zone. If you add other security zones, you need rules to allow traffic to and from those
zones. These would be your minimum changes.
In addition, you can configure other policies to provide additional services, and fine-tune NAT and access
rules to get the results that your organization requires. You can configure the following policies:
• SSL Decryption —If you want to inspect encrypted connections (such as HTTPS) for intrusions, malware,
and so forth, you must decrypt the connections. Use the SSL decryption policy to determine which
connections need to be decrypted. The system re-encrypts the connection after inspecting it.
• Identity —If you want to correlate network activity to individual users, or control network access based
on user or user group membership, use the identity policy to determine the user associated with a given
source IP address.
• Security Intelligence —Use the Security Intelligence policy to quickly drop connections from or to
blacklisted IP addresses or URLs. By blacklisting known bad sites, you do not need to account for them
in your access control policy. Cisco provides regularly updated feeds of known bad addresses and URLs
so that the Security Intelligence blacklist updates dynamically. Using feeds, you do not need to edit the
policy to add or remove items in the blacklist.
• NAT (Network Address Translation) —Use the NAT policy to convert internal IP addresses to externally
routeable addresses.
Cisco Firepower 2100 Getting Started Guide
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Firepower Threat Defense Deployment with FDM
Configure the Firewall in Firepower Device Manager