Prepare to Deploy Network Packet Broker
Take the following actions to prepare to deploy Network Packet Broker:
- Obtain and activate the free Network Packet Broker license.
- Selecton the left-hand navigation pane.AssetsDevices
- Find the device on which you want to enable decryption broker or decryption port mirroring and selectActions(the pencil icon).
- Under Activate Licenses, selectActivate Feature License
- Select theNetwork Packet Brokerfree license.
- ClickAgree and Submit.
- Install the license on the firewall.
- ClickRetrieve license keys from the license server.
- Verify that thepage shows that theDeviceLicensesNetwork Packet Brokerlicense is now active on the firewall.
- Restart the firewall (). Network Packet Broker is not available for configuration until the firewall restarts.DeviceSetupOperationsYou can push the Network Packet Broker license from Panorama to managed firewalls. You must reboot the firewalls to make the license take effect and update the user interface.
- Enable the App-ID cache for Network Packet Broker.
Verify the settings show thatApplication cacheis set toyesandUse cache for appidis set toyes:admin@PA-3260> show running application setting Application setting: Application cache : yes Supernode : yes Heuristics : yes Cache Threshold : 1 Bypass when exceeds queue limit: no Traceroute appid : yes Traceroute TTL threshold : 30 Use cache for appid : yes Use simple appsigs for ident : yes Use AppID cache on SSL/SNI : no Unknown capture : on Max. unknown sessions : 5000 Current unknown sessions : 33 Application capture : offCurrent APPID Signature Memory Usage : 16768 KB (Actual 16461 KB) TCP 1 C2S : regex 11898 states TCP 1 S2C : regex 4549 states UDP 1 C2S : regex 4263 states UDP 1 S2C : regex 1605 states
- The App-ID cache is disabled by default. Enable it using the configuration mode CLI command:admin@PA-3260# set deviceconfig setting application cache yes
- Enable the firewall to use the App-ID cache to identify applications:admin@PA-3260# set deviceconfig setting application use-cache-for-identification yes
- Enable the firewall toAllow forwarding of decrypted content().DeviceSetupContent-ID
- Identify the traffic that you want to forward to one or multiple security chains.
- Identify the topology for each security chain and determine whether to use layer 1 Transparent Bridge forwarding or routed layer 3 forwarding, which determines what type of security chain you configure on the firewall. Considerations include:
- Whether you want to load-balance traffic across multiple chains (use a routed layer 3 security chain to distribute sessions across multiple chains through a router, switch, or other routing device), use a single chain, or use different security chains for different types of traffic. For multiple layer 1 Transparent Bridge chains, you need a pair of dedicated firewall interfaces for each security chain because the layer 1 connection is not routed.
- Whether to use unidirectional or bidirectional traffic flow through the security chain.
- Decide which pairs of firewall interfaces to use as dedicated Network Packet Broker forwarding interfaces.
Security policy must allow traffic between each paired set of Network Packet Broker interfaces. Theintrazone-defaultSecurity policy rule allows traffic within the same zone by default. However, if you have a “deny all” policy rule earlier in the policy rulebase, then you must create an explicit allow rule to allow the Network Packet Broker traffic.
- For layer 1 Transparent Bridge chains, you need a pair of dedicated firewall interfaces for each layer 1 security chain. You can configure policy rules to send specific traffic to different security chains.
- For routed layer 3 chains, one dedicated pair of firewall interfaces can load balance traffic among multiple layer 3 security chains through a switch, router, or other routing-capable device.
- For routed layer 3 chains, you can use multiple pairs of dedicated firewall interfaces to send specific traffic to different security chains using different policy rules.
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