End-of-Life (EoL)

DoS Protection Profiles

DoS protection profiles provide detailed control for Denial of Service (DoS) protection policies. DoS policies allow you to control the number of sessions between interfaces, zones, addresses, and countries based on aggregate sessions or source and/or destination IP addresses. There are two DoS protection mechanisms that the Palo Alto Networks firewalls support.
  • Flood Protection
    —Detects and prevents attacks where the network is flooded with packets resulting in too many half-open sessions and/or services being unable to respond to each request. In this case the source address of the attack is usually spoofed. See DoS Protection Against Flooding of New Sessions.
  • Resource Protection
    — Detects and prevents session exhaustion attacks. In this type of attack, a large number of hosts (bots) are used to establish as many fully established sessions as possible to consume all of a system’s resources.
You can enable both types of protection mechanisms in a single DoS protection profile.
The DoS profile is used to specify the type of action to take and details on matching criteria for the DoS policy. The DoS profile defines settings for SYN, UDP, and ICMP floods, can enable resource protect and defines the maximum number of concurrent connections. After you configure the DoS protection profile, you then attach it to a DoS policy.
When configuring DoS protection, it is important to analyze your environment in order to set the correct thresholds and due to some of the complexities of defining DoS protection policies, this guide will not go into detailed examples. For more information, refer to the Threat Prevention Tech Note.

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