Udp-Flood Threshold - H3C MSR Series Command Reference Manual
Comware 7 security
Hide thumbs
Also See for MSR Series:
- Command reference manual (174 pages) ,
- Configuration manual (80 pages) ,
- Manual (33 pages)
Table of Contents
Advertisement
Usage guidelines
The global UDP flood attack detection applies to all IP addresses except for those specified by the
udp-flood detect command. The global detection uses the global trigger threshold set by the
udp-flood threshold command and global actions specified by the udp-flood action command.
Examples
# Enable global UDP flood attack detection in the attack defense policy atk-policy-1.
<Sysname> system-view
[Sysname] attack-defense policy atk-policy-1
[Sysname-attack-defense-policy-atk-policy-1] udp-flood detect non-specific
Related commands
udp-flood action
udp-flood detect
udp-flood threshold
udp-flood threshold
Use udp-flood threshold to set the global threshold for triggering UDP flood attack prevention.
Use undo udp-flood threshold to restore the default.
Syntax
udp-flood threshold threshold-value
undo udp-flood threshold
Default
The global threshold is 1000 for triggering UDP flood attack prevention.
Views
Attack defense policy view
Predefined user roles
network-admin
Parameters
threshold-value: Specifies the threshold value. The value range is 1 to 64000 in units of UDP packets
sent to an IP address per second.
Usage guidelines
The global threshold applies to global UDP flood attack detection. Adjust the threshold according to
the application scenarios. If the number of UDP packets sent to a protected server, such as an HTTP
or FTP server, is normally large, set a large threshold. A small threshold might affect the server
services. For a network that is unstable or susceptible to attacks, set a small threshold.
With global UDP flood attack detection configured, the device is in attack detection state. When the
sending rate of UDP packets to an IP address reaches the threshold, the device enters prevention
state and takes the specified actions. When the rate is below the silence threshold (three-fourths of
the threshold), the device returns to the attack detection state.
Examples
# Set the global threshold to 100 for triggering UDP flood attack prevention in the attack defense
policy atk-policy-1.
<Sysname> system-view
[Sysname] attack-defense policy atk-policy-1
1090
Advertisement
Table of Contents
