Next-Generation Firewall
DHCP Messages
Table of Contents
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Next-Generation Firewall Docs
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Cloud Management of NGFWs
- 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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- Configure a Filter Access List
- Configure a Filter Prefix List
- Configure a Filter Community List
- Configure a BGP Filter Route Map
- Configure a Filter Route Maps Redistribution List
- Configure a Filter AS Path Access List
- Configure an Address Family Profile
- Configure a BGP Authentication Profile
- Configure a BGP Redistribution Profile
- Configure a BGP Filtering Profile
- Configure an OSPF Authentication Profile
- Configure a Logical Router
- Configure a Static Route
- Configure OSPF
- Configure BGP
- Configure an IPSec Tunnel
- Web Proxy
- Cheat Sheet: GlobalProtect for Cloud Management of NGFWs
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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
DHCP Messages
Review the DHCP messages from the server to client.
Contact your account team to enable Cloud Management for NGFWs using Strata
Cloud Manager.
| Where Can I Use This? | What Do I Need? |
|---|---|
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One of these:
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DHCP uses eight standard message types identified by an option type number in the
DHCP message. For example, when a client wants to find a DHCP server, it broadcasts
DHCPDISCOVER messages on its local physical subnetwork.
If there’s no DHCP server on its subnet and if the DHCP Helper or DHCP Relay is
configured properly, the message is forwarded to DHCP servers on a different physical
subnet. Otherwise, the message will go no further than the subnet on which it
originated. One or more DHCP servers respond with a
DHCPOFFER message that contains an available network
address and other configuration parameters.
When the client needs an IP address, it sends a DHCPREQUEST to one
or more servers. If the client is requesting an IP address, it doesn’t have one yet, so
RFC 2131 requires that the broadcast message the client
sends out have a source address of 0 in its IP header.
When a client requests configuration parameters from a server, it might receive responses from
more than one server. Once a client has received its IP address, it’s said that the
client has at least an IP address and possibly other configuration parameters
bound to it. DHCP servers manage such binding of
configuration parameters to clients.
DHCP Message | Description |
|---|---|
DHCPDISCOVER | Client broadcast to find available DHCP
servers. |
DHCOPOFFER | Server responds to client’s DHCPDISCOVER, offering configuration
parameters. |
DHCPREQUEST | Client message to one or more servers to
do any of the following:
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DHCPACK | Server to client acknowledgment message
containing configuration parameters, including a confirmed network address. |
DHCPNAK | Server to client negative acknowledgment
indicating the client’s understanding of the network address is incorrect
(for example, if the client has moved to a new subnet), or a client’s
lease has expired. |
DHCPDECLINE | Client to server message indicating the
network address is already being used. |
DHCPRELEASE | Client to server message giving up the user
of the network address and canceling the remaining time on the lease. |
DHCPINFORM | Client to server message requesting only
local configuration parameters; client has an externally configured
network address. |