Decryption Log
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Next-Generation Firewall Docs
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PAN-OS 10.0 (EoL)
- 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
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- Define Access to the Web Interface Tabs
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- Define User Privacy Settings in the Admin Role Profile
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- Panorama Web Interface Access Privileges
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- Reset the Firewall to Factory Default Settings
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- Plan Your Authentication Deployment
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- Keys and 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
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- Use the Dashboard
- Monitor Applications and Threats
- Monitor Block List
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- Report Types
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- Configure Syslog Monitoring
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- Traffic Log Fields
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- URL Filtering Log Fields
- Data Filtering Log Fields
- HIP Match Log Fields
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- IP-Tag Log Fields
- User-ID Log Fields
- Decryption Log Fields
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- Monitor Transceivers
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- User-ID Overview
- Enable User-ID
- Map Users to Groups
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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
- Application Level Gateways
- Disable the SIP Application-level Gateway (ALG)
- Maintain Custom Timeouts for Data Center Applications
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- Best Practices for Securing Your Network from Layer 4 and Layer 7 Evasions
- Set Up Antivirus, Anti-Spyware, and Vulnerability Protection
- Set Up File Blocking
- Prevent Brute Force Attacks
- Customize the Action and Trigger Conditions for a Brute Force Signature
- Enable Evasion Signatures
- Monitor Blocked IP Addresses
- Threat Signature Categories
- Create Threat Exceptions
- Custom Signatures
- Share Threat Intelligence with Palo Alto Networks
- Threat Prevention Resources
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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 Support for Decrypted Sessions
- Decryption Mirroring
- Configure SSL Forward Proxy
- Configure SSL Inbound Inspection
- Configure SSH Proxy
- Configure Server Certificate Verification for Undecrypted Traffic
- Enable Users to Opt Out of SSL Decryption
- Temporarily Disable SSL Decryption
- Configure Decryption Port Mirroring
- Verify Decryption
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- How Decryption Broker Works
- Layer 3 Security Chain Guidelines
- Configure Decryption Broker with One or More Layer 3 Security Chain
- Transparent Bridge Security Chain Guidelines
- Configure Decryption Broker with a Single Transparent Bridge Security Chain
- Configure Decryption Broker with Multiple Transparent Bridge Security Chains
- Activate Free Licenses for Decryption Features
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- About Palo Alto Networks URL Filtering Solution
- How Advanced URL Filtering Works
- URL Filtering Inline ML
- URL Filtering Use Cases
- Plan Your URL Filtering Deployment
- URL Filtering Best Practices
- Activate The Advanced URL Filtering Subscription
- Test URL Filtering Configuration
- Configure URL Filtering
- Configure URL Filtering Inline ML
- Log Only the Page a User Visits
- Create a Custom URL Category
- URL Category Exceptions
- Use an External Dynamic List in a URL Filtering Profile
- Allow Password Access to Certain Sites
- URL Filtering Response Pages
- Customize the URL Filtering Response Pages
- HTTP Header Logging
- Request to Change the Category for a URL
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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
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- Virtual Wire Subinterfaces
- Configure Virtual Wires
- Configure an Aggregate Interface Group
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- Use Interface Management Profiles to Restrict Access
- Virtual Routers
- Service Routes
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- Route Redistribution
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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
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- DNS Proxy Rule and FQDN Matching
- Dynamic DNS Overview
- Configure Dynamic DNS for Firewall Interfaces
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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)
- 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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- 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
- 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
-
- NAT Rule Capacities
- Dynamic IP and Port NAT Oversubscription
- Dataplane NAT Memory Statistics
-
- 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
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- Enable Advanced Routing
- Logical Router Overview
- Configure a Logical Router
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- Create RIPv2 Routing Profiles
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- 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
End-of-Life (EoL)
Decryption Log
The Decryption Log (MonitorLogsDecryption)
provides comprehensive information about sessions that match a Decryption
policy to help you gain context about that traffic so you can accurately
and easily diagnose and resolve decryption issues. The firewall
does not log traffic if the traffic does not match a Decryption
policy. If you want to log traffic that you don’t decrypt, create
a policy-based decryption exclusion and
for policies that govern TLSv1.2 and earlier traffic, apply a No Decryption profile to
the traffic.
PAN-OS supports Decryption logs for the following types of traffic:
- Forward Proxy—Several fields only display information for Forward Proxy traffic, including Root CA (for trusted certificates only) and Server Name Identification (SNI).
- Inbound Inspection.
- No Decrypt (traffic excluded from decryption by Decryption policy).Because the session remains encrypted, the firewall displays less information. For undecrypted TLSv1.3 traffic, there is no certificate information because TLSv1.3 encrypts certificate information.
- GlobalProtect—Covers GlobalProtect Gateway, GlobalProtect Portal, and GlobalProtect Clientless VPN (client-to-firewall only).GlobalProtect does not support TLSv1.3.
- Decryption Mirror
- Decryption Broker (shown as Forward Proxy in the Proxy Type column).
Not all types of traffic support every parameter. Unsupported Parameters by Proxy Type and TLS Version provides
a complete list of unsupported parameters for each type of decryption
traffic.
The data for Forward Proxy traffic is based on whether the TLS
handshake is successful or unsuccessful. For unsuccessful TLS handshakes,
the firewall sends error data for the leg of the transaction that
caused the error, either client-to-firewall or firewall-to-server.
For successful TLS handshakes, the data is from the leg that successfully
completes first, which is usually client-to-firewall.
Decryption logs are not supported for SSH Proxy traffic.
In addition, certificate information is not available for session
resumption logs.
By default, the firewall logs all unsuccessful
TLS handshake traffic. You can also log successful TLS handshake
traffic if you choose to do so. You can view up to 62 columns of
log information such as application, SNI, Decryption Policy Name,
error index, TLS version, key exchange version, encryption algorithm,
certificate key types, and many other characteristics:
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Click the magnifying glass icon (
) to see the Detailed
Log View of a session.
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The Decryption log learns each session’s App-ID from the
Traffic log, so Traffic logs must be enabled to see the App-ID in
the Decryption log. If Traffic logs are disabled, the App-ID shows
as incomplete. For example, a lot of GlobalProtect
traffic is intrazone traffic (Untrust zone to Untrust zone), but
the default intra-zone policy does not enable Traffic logs. To see
the App-ID for GlobalProtect intrazone traffic, you need to enable
the Traffic log for intrazone traffic.
Another reason that
the App-ID may display as incomplete is that
for long sessions, the firewall may generate the Decryption log
before the Traffic log is complete (the Traffic log is usually generated
at session end). In those cases, the App-ID is not available for
the Decryption log. In addition, when the TLS handshake fails and
generates an error log, the App-ID is not available because the
failure terminates the session before the firewall can determine
the App-ID. In these cases, the application may display as ssl or
as incomplete.
To troubleshoot issues, use the Decryption ACC
widgets (ACCSSL Activity)
to identify traffic that causes decryption issues and then use the
Decryption log and Custom Report Templates for Decryption to drill
down into details.
When you forward Decryption logs for storage, ensure that you
properly secure log transport and storage because Decryption logs
contain sensitive information.
When the Decryption logs are enabled, the firewall sends
HTTP/2 logs as Tunnel Inspection logs (when Decryption logs are
disabled, HTTP/2 logs are sent as Traffic logs), so you need to
check the Tunnel Inspection logs instead of the Traffic logs for
HTTP/2 events. In addition, you must enable Tunnel Content Inspection to
obtain the App-ID for HTTP/2 traffic.