NDP Monitoring
Table of Contents
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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 an Aggregate Interface Group
- Configure Bonjour Reflector for Network Segmentation
- Use Interface Management Profiles to Restrict Access
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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)
- 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
- Create Multicast Routing Profiles
- Create an IPv4 MRoute
NDP
Monitoring
Neighbor Discovery Protocol (NDP) for IPv6 (RFC 4861) performs functions similar
to ARP functions for IPv4. The firewall by default runs NDP, which
uses ICMPv6 packets to discover and track the link-layer addresses
and status of neighbors on connected links.
Enable NDP Monitoring so
you can view the IPv6 addresses of devices on the link local network,
their MAC address, associated username from User-ID (if the user
of that device used the directory service to log in), reachability
Status of the address, and Last Reported date and time the NDP monitor
received a Router Advertisement from this IPv6 address. The username
is on a best-case basis; there can be many IPv6 devices on a network
with no username, such as printers, fax machines, servers, etc.
If you want to quickly track a device and user who has violated
a security rule, it is very useful to have the IPv6 address, MAC
address and username displayed all in one place. You need the MAC
address that corresponds to the IPv6 address in order to trace the
MAC address back to a physical switch or Access Point.
NDP monitoring is not guaranteed to discover all devices
because there could be other networking devices between the firewall
and the client that filter out NDP or Duplicate Address Detection
(DAD) messages. The firewall can monitor only the devices that it
learns about on the interface.
NDP monitoring also monitors Duplicate Address Detection (DAD)
packets from clients and neighbors. You can also monitor IPv6 ND
logs to make troubleshooting easier.
NDP monitoring is supported for Ethernet interfaces, subinterfaces,
Aggregated Ethernet interfaces, and VLAN interfaces on all PAN-OS
models.