anti-ddos udp-fingerprint-learn

Function

The anti-ddos udp-fingerprint-learn command configures the dynamic fingerprint learning mode.

Format

anti-ddos udp-fingerprint-learn offset offset fingerprint-length fingerprint-length

Parameters

Parameter	Description	Value
offset	Specifies the offset of the fingerprint. The offset starts from the bit where the UDP header ends.	The value is an integer ranging from 0 to 1500, in bytes.
fingerprint-length	Specifies the fingerprint length.	It is an integer ranging from 1 to 8.

Views

System view

Default Level

2: Configuration level

Usage Guidelines

By default, the fingerprint learning learns the last eight bytes of the data field in a packet.

Example

# Configure the dynamic fingerprint learning mode to learn the fingerprint whose length is four bytes and the offset starts 40 bytes behind the bit where the UDP header ends.

<sysname> system-view
[sysname] anti-ddos udp-fingerprint-learn offset 40 fingerprint-length 4