Configure Transparent Bridge Security Chains
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Next-Generation Firewall Docs
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PAN-OS 11.1 & Later
- PAN-OS 11.1 & Later
- PAN-OS 11.0 (EoL)
- PAN-OS 10.2
- PAN-OS 10.1
- PAN-OS 10.0 (EoL)
- PAN-OS 9.1 (EoL)
- Cloud Management of NGFWs
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- Management Interfaces
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- Launch the Web Interface
- Use the Administrator Login Activity Indicators to Detect Account Misuse
- Manage and Monitor Administrative Tasks
- Commit, Validate, and Preview Firewall Configuration Changes
- Commit Selective Configuration Changes
- Export Configuration Table Data
- Use Global Find to Search the Firewall or Panorama Management Server
- Manage Locks for Restricting Configuration Changes
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- Define Access to the Web Interface Tabs
- Provide Granular Access to the Monitor Tab
- Provide Granular Access to the Policy Tab
- Provide Granular Access to the Objects Tab
- Provide Granular Access to the Network Tab
- Provide Granular Access to the Device Tab
- Define User Privacy Settings in the Admin Role Profile
- Restrict Administrator Access to Commit and Validate Functions
- Provide Granular Access to Global Settings
- Provide Granular Access to the Panorama Tab
- Provide Granular Access to Operations Settings
- Panorama Web Interface Access Privileges
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- Reset the Firewall to Factory Default Settings
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- Plan Your Authentication Deployment
- Pre-Logon for SAML Authentication
- Configure SAML Authentication
- Configure Kerberos Single Sign-On
- Configure Kerberos Server Authentication
- Configure TACACS+ Authentication
- Configure TACACS Accounting
- Configure RADIUS Authentication
- Configure LDAP Authentication
- Configure Local Database Authentication
- Configure an Authentication Profile and Sequence
- Test Authentication Server Connectivity
- Troubleshoot Authentication Issues
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- Keys and Certificates
- Default Trusted Certificate Authorities (CAs)
- Certificate Deployment
- Configure the Master Key
- Export a Certificate and Private Key
- Configure a Certificate Profile
- Configure an SSL/TLS Service Profile
- Configure an SSH Service Profile
- Replace the Certificate for Inbound Management Traffic
- Configure the Key Size for SSL Forward Proxy Server Certificates
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- HA Overview
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- Prerequisites for Active/Active HA
- Configure Active/Active HA
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- Use Case: Configure Active/Active HA with Route-Based Redundancy
- Use Case: Configure Active/Active HA with Floating IP Addresses
- Use Case: Configure Active/Active HA with ARP Load-Sharing
- Use Case: Configure Active/Active HA with Floating IP Address Bound to Active-Primary Firewall
- Use Case: Configure Active/Active HA with Source DIPP NAT Using Floating IP Addresses
- Use Case: Configure Separate Source NAT IP Address Pools for Active/Active HA Firewalls
- Use Case: Configure Active/Active HA for ARP Load-Sharing with Destination NAT
- Use Case: Configure Active/Active HA for ARP Load-Sharing with Destination NAT in Layer 3
- HA Clustering Overview
- HA Clustering Best Practices and Provisioning
- Configure HA Clustering
- Refresh HA1 SSH Keys and Configure Key Options
- HA Firewall States
- Reference: HA Synchronization
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- Use the Dashboard
- Monitor Applications and Threats
- Monitor Block List
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- Report Types
- View Reports
- Configure the Expiration Period and Run Time for Reports
- Disable Predefined Reports
- Custom Reports
- Generate Custom Reports
- Generate the SaaS Application Usage Report
- Manage PDF Summary Reports
- Generate User/Group Activity Reports
- Manage Report Groups
- Schedule Reports for Email Delivery
- Manage Report Storage Capacity
- View Policy Rule Usage
- Use External Services for Monitoring
- Configure Log Forwarding
- Configure Email Alerts
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- Configure Syslog Monitoring
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- Traffic Log Fields
- Threat Log Fields
- URL Filtering Log Fields
- Data Filtering Log Fields
- HIP Match Log Fields
- GlobalProtect Log Fields
- IP-Tag Log Fields
- User-ID Log Fields
- Decryption Log Fields
- Tunnel Inspection Log Fields
- SCTP Log Fields
- Authentication Log Fields
- Config Log Fields
- System Log Fields
- Correlated Events Log Fields
- GTP Log Fields
- Audit Log Fields
- Syslog Severity
- Custom Log/Event Format
- Escape Sequences
- Forward Logs to an HTTP/S Destination
- Firewall Interface Identifiers in SNMP Managers and NetFlow Collectors
- Monitor Transceivers
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- User-ID Overview
- Enable User-ID
- Map Users to Groups
- Enable User- and Group-Based Policy
- Enable Policy for Users with Multiple Accounts
- Verify the User-ID Configuration
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- App-ID Overview
- App-ID and HTTP/2 Inspection
- Manage Custom or Unknown Applications
- Safely Enable Applications on Default Ports
- Applications with Implicit Support
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- Prepare to Deploy App-ID Cloud Engine
- Enable or Disable the App-ID Cloud Engine
- App-ID Cloud Engine Processing and Policy Usage
- New App Viewer (Policy Optimizer)
- Add Apps to an Application Filter with Policy Optimizer
- Add Apps to an Application Group with Policy Optimizer
- Add Apps Directly to a Rule with Policy Optimizer
- Replace an RMA Firewall (ACE)
- Impact of License Expiration or Disabling ACE
- Commit Failure Due to Cloud Content Rollback
- Troubleshoot App-ID Cloud Engine
- Application Level Gateways
- Disable the SIP Application-level Gateway (ALG)
- Maintain Custom Timeouts for Data Center Applications
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- Decryption Overview
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- Keys and Certificates for Decryption Policies
- SSL Forward Proxy
- SSL Forward Proxy Decryption Profile
- SSL Inbound Inspection
- SSL Inbound Inspection Decryption Profile
- SSL Protocol Settings Decryption Profile
- SSH Proxy
- SSH Proxy Decryption Profile
- Profile for No Decryption
- SSL Decryption for Elliptical Curve Cryptography (ECC) Certificates
- Perfect Forward Secrecy (PFS) Support for SSL Decryption
- SSL Decryption and Subject Alternative Names (SANs)
- TLSv1.3 Decryption
- High Availability Not Supported for Decrypted Sessions
- Decryption Mirroring
- Configure SSL Forward Proxy
- Configure SSL Inbound Inspection
- Configure SSH Proxy
- Configure Server Certificate Verification for Undecrypted Traffic
- Post-Quantum Cryptography Detection and Control
- Enable Users to Opt Out of SSL Decryption
- Temporarily Disable SSL Decryption
- Configure Decryption Port Mirroring
- Verify Decryption
- Activate Free Licenses for Decryption Features
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- Policy Types
- Policy Objects
- Track Rules Within a Rulebase
- Enforce Policy Rule Description, Tag, and Audit Comment
- Move or Clone a Policy Rule or Object to a Different Virtual System
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- External Dynamic List
- Built-in External Dynamic Lists
- Configure the Firewall to Access an External Dynamic List
- Retrieve an External Dynamic List from the Web Server
- View External Dynamic List Entries
- Exclude Entries from an External Dynamic List
- Enforce Policy on an External Dynamic List
- Find External Dynamic Lists That Failed Authentication
- Disable Authentication for an External Dynamic List
- Register IP Addresses and Tags Dynamically
- Use Dynamic User Groups in Policy
- Use Auto-Tagging to Automate Security Actions
- CLI Commands for Dynamic IP Addresses and Tags
- Application Override Policy
- Test Policy Rules
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- Network Segmentation Using Zones
- How Do Zones Protect the Network?
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PAN-OS 11.1 & Later
- PAN-OS 11.1 & Later
- PAN-OS 11.0 (EoL)
- PAN-OS 10.2
- PAN-OS 10.1
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- Tap Interfaces
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- Layer 2 and Layer 3 Packets over a Virtual Wire
- Port Speeds of Virtual Wire Interfaces
- LLDP over a Virtual Wire
- Aggregated Interfaces for a Virtual Wire
- Virtual Wire Support of High Availability
- Zone Protection for a Virtual Wire Interface
- VLAN-Tagged Traffic
- Virtual Wire Subinterfaces
- Configure Virtual Wires
- Configure a PPPoE Client on a Subinterface
- Configure an IPv6 PPPoE Client
- Configure an Aggregate Interface Group
- Configure Bonjour Reflector for Network Segmentation
- Use Interface Management Profiles to Restrict Access
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- DHCP Overview
- Firewall as a DHCP Server and Client
- Firewall as a DHCPv6 Client
- DHCP Messages
- Dynamic IPv6 Addressing on the Management Interface
- Configure an Interface as a DHCP Server
- Configure an Interface as a DHCPv4 Client
- Configure an Interface as a DHCPv6 Client with Prefix Delegation
- Configure the Management Interface as a DHCP Client
- Configure the Management Interface for Dynamic IPv6 Address Assignment
- Configure an Interface as a DHCP Relay Agent
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- DNS Overview
- DNS Proxy Object
- DNS Server Profile
- Multi-Tenant DNS Deployments
- Configure a DNS Proxy Object
- Configure a DNS Server Profile
- Use Case 1: Firewall Requires DNS Resolution
- Use Case 2: ISP Tenant Uses DNS Proxy to Handle DNS Resolution for Security Policies, Reporting, and Services within its Virtual System
- Use Case 3: Firewall Acts as DNS Proxy Between Client and Server
- DNS Proxy Rule and FQDN Matching
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- NAT Rule Capacities
- Dynamic IP and Port NAT Oversubscription
- Dataplane NAT Memory Statistics
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- Translate Internal Client IP Addresses to Your Public IP Address (Source DIPP NAT)
- Create a Source NAT Rule with Persistent DIPP
- PAN-OS
- Strata Cloud Manager
- Enable Clients on the Internal Network to Access your Public Servers (Destination U-Turn NAT)
- Enable Bi-Directional Address Translation for Your Public-Facing Servers (Static Source NAT)
- Configure Destination NAT with DNS Rewrite
- Configure Destination NAT Using Dynamic IP Addresses
- Modify the Oversubscription Rate for DIPP NAT
- Reserve Dynamic IP NAT Addresses
- Disable NAT for a Specific Host or Interface
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- Network Packet Broker Overview
- How Network Packet Broker Works
- Prepare to Deploy Network Packet Broker
- Configure Transparent Bridge Security Chains
- Configure Routed Layer 3 Security Chains
- Network Packet Broker HA Support
- User Interface Changes for Network Packet Broker
- Limitations of Network Packet Broker
- Troubleshoot Network Packet Broker
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- Enable Advanced Routing
- Logical Router Overview
- Configure a Logical Router
- Create a Static Route
- Configure BGP on an Advanced Routing Engine
- Create BGP Routing Profiles
- Create Filters for the Advanced Routing Engine
- Configure OSPFv2 on an Advanced Routing Engine
- Create OSPF Routing Profiles
- Configure OSPFv3 on an Advanced Routing Engine
- Create OSPFv3 Routing Profiles
- Configure RIPv2 on an Advanced Routing Engine
- Create RIPv2 Routing Profiles
- Create BFD Profiles
- Configure IPv4 Multicast
- Configure MSDP
- Create Multicast Routing Profiles
- Create an IPv4 MRoute
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PAN-OS 11.2
- PAN-OS 11.2
- PAN-OS 11.1
- PAN-OS 11.0 (EoL)
- PAN-OS 10.2
- PAN-OS 10.1
- PAN-OS 10.0 (EoL)
- PAN-OS 9.1 (EoL)
- PAN-OS 9.0 (EoL)
- PAN-OS 8.1 (EoL)
- Cloud Management and AIOps for NGFW
Configure Transparent Bridge Security Chains
A layer 1 Transparent Bridge security chain
forwards traffic from one firewall interface through a directly
connected series of data inspection and processing security devices
and then back through a different firewall interface without the
need to route the traffic.
Before you configure a layer 1
Transparent Bridge security chain, take the steps to Prepare to Deploy Network Packet Broker, including
ensuring that the physical connections between the firewall and
the security chain devices are correct and that you allow the firewall
to forward decrypted content.
To distribute sessions across
multiple Transparent Bridge security chains, create one layer 1
Transparent Bridge security chain on the firewall for each of the security
chains you want to use to load balance traffic. Each Transparent
Bridge security chain on the firewall requires two dedicated layer
3 Ethernet interfaces. Check to ensure that you have enough free
Ethernet interfaces for the topology you want to configure.
Layer
1 Transparent Bridge security chains cannot failover to another
security chain because they are not routed.
- Enable two Layer 3 Ethernet interfaces as Network Packet Broker forwarding interfaces.
- Select NetworkInterfacesEthernet.
- Select an unused Ethernet interface to use as one of the two Network Packet Broker forwarding interfaces.
- Set the Interface Type to Layer3.
- On the Config tab, select a zone to assign the interface to.You must configure both of the security chain interfaces in the same zone.Security policy must allow traffic between each paired set of Network Packet Broker interfaces. The intrazone-default Security 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.
- On the Config tab, as a best practice, use or create a dedicated Virtual Router to assign the interface to. Using a dedicated Virtual Router ensures that the Network Packet Broker interface traffic remains separate from other traffic.
- Select Advanced and then select Network Packet Broker to enable the interface.
- Click OK to save the interface configuration.
- Repeat this procedure on another unused Ethernet interface to configure the other Network Packet Broker forwarding interface.
- Configure a Packet Broker profile to control how to forward the traffic to the layer 1 Transparent Bridge security chain.
- Select ObjectsPacket Broker Profile and Add a new profile or modify an existing profile.
- Give the profile a Name and Description so that you easily identify its purpose.
- On the General tab:
- Select Transparent Bridge (Layer 1) as the Security Chain Type.
- Enable IPv6 if the traffic is IPv6 traffic.
- Select the Flow Direction.Your network topology determines whether to use unidirectional or bidirectional flows. The performance is approximately the same using either method.To use one firewall interface to forward both the c2s and s2c session flows to the security chain and use the other firewall interface to receive both session flows back from the security chain, select Unidirectional.To use Interface #1 to forward the c2s flow to the security chain and receive the s2c flow from the security chain, and use Interface #2 to forward the s2c flow to the security chain and receive the c2s flow from the security chain, select Bidirectional.
- Specify the Network Packet Broker forwarding interface pair in Interface #1 and Interface #2. Both interfaces must already be enabled for Network Packet Broker (see Prepare to Deploy Network Packet Broker) to be available for use. Be careful to pay attention to the directionality of flow when you configure which interface is Interface #1 and which interface is Interface #2.
- The Security Chains tab is not used for Transparent Bridges.
- On the Health Monitor tab:
- Select the type or types of health monitoring you want to perform so that you can control what happens if the security chain experiences a failure. You can select one, two, or all from Path Monitoring, HTTP Monitoring, and HTTP Monitoring Latency.Path Monitoring—Checks device connectivity using pings.HTTP Monitoring—Checks device availability and response time.HTTP Monitoring Latency—Checks device processing speed and efficiency. When you select this option, HTTP Monitoring is automatically enabled as well.
- Enabling one or more types of health monitoring activates the On Health Check Failure options, which determine how the firewall handles security chain traffic if there is a security chain health failure. The options are Bypass Security Chain and Block Session.Bypass Security Chain—The firewall forwards the traffic to its destination instead of to the security chain and the applies any configured Security profiles and protections to the traffic.Block Session—The firewall blocks the session.The method you select depends on how you want to treat the traffic if you can’t run the traffic through the security chain.
- If you select more than one health check option, select whether you want the firewall to consider the health check as failed (Health Check Failed Condition) if any one of the monitoring options records a failed condition (OR Condition) or only if all of the selected monitoring options record a failed condition (AND Condition). For example, if you enable all three health check options and one of the options records a failed condition, if you selected OR Condition, the firewall considers the security chain connection to be failed and executes the action you specified in On Health Check Failure. If you selected AND Condition, the firewall would still consider the connection to be healthy because two of the health metrics are still OK.
- Click OK to save the profile.
- Configure a Packet Broker policy to define the traffic to forward to the layer 1 Transparent Bridge security chain.
- Select PoliciesNetwork Packet Broker and Add a new policy rule or modify an existing policy rule.
- On the General tab, give the policy rule a Name and Description so that you easily identify its purpose, add an Audit Comment, and apply tags if you use them.
- On the Source tab, identify the source zones, IP addresses, users, and devices of the traffic that you want the rule to forward to the security chain.
- On the Destination tab, identify the destination zones, IP addresses, and devices of the traffic that you want the rule to forward to the security chain.
- On the Application/Service/Traffic tab, identify the applications and services you want the rule to forward to the security chain. Unless the rule control applications that you expect to use non-standard ports such as internal custom applications, the best practice is to set the Service to Application Default so that applications that exhibit evasive behavior by using non-standard ports are blocked.For the Traffic Type, select all of the types of traffic that you want the rule to forward to the security chain. Forward TLS(Decrypted) Traffic is the default selection. You can select any combination of Forward TLS(Decrypted) Traffic, Forward TLS(Non-Decrypted), and Forward Non-TLS Traffic to forward to the security chain.
- On the Path Selection tab, select the Packet Broker profile you created inStep 2or create a new profile to control how to send the traffic that the policy rule controls to the security chain.
- RepeatStep 1throughStep 3to create more layer 1 Transparent Bridge security chains.For each layer 1 Transparent Bridge security chain:
- The two Ethernet interfaces used as Network Packet Broker forwarding interfaces must be dedicated to each security chain. Ethernet interfaces used for a Transparent Bridge security chain cannot be used for any other purpose or carry any other traffic.
- Each pair of Network Packet Broker forwarding interfaces connects to one layer 1 Transparent Bridge security chain.
You can load balance traffic by creating Network Packet Broker policy rules that divide traffic relatively equally among the Transparent Bridge security chains. You can also use policy rules to direct specific traffic and types of traffic through specific security chains.Layer 1 Transparent Bridge security chains cannot failover to another security chain because they are not routed. Use the Health Monitor tab in the Packet Broker profile to configure how to handle traffic if a Transparent Bridge security chain fails.