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The global threshold applies to global SYN flood attack detection. Adjust the threshold according to
the application scenarios. If the number of SYN 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.
Examples
# Set the global threshold to 100 for triggering SYN flood attack prevention in attack defense policy
atk-policy-1
.
<Sysname> system-view
[Sysname] attack-defense policy atk-policy-1
[Sysname-attack-defense-policy-atk-policy-1] syn-flood threshold 100
Related commands
syn-flood action
syn-flood detect
syn-flood detect non-specific
udp-flood action
Use
udp-flood action
to specify global actions against UDP flood attacks.
Use
undo udp-flood action
to restore the default.
Syntax
udp-flood action
{
drop
|
logging
} *
undo udp-flood action
Default
No global action is specified for UDP flood attacks.
Views
Attack defense policy view
Predefined user roles
network-admin
mdc-admin
Parameters
drop
: Drops subsequent UDP packets destined for the victim IP addresses.
logging
: Enables logging for UDP flood attack events.
Examples
# Specify
drop
as the global action against UDP flood attacks in 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 action drop
Related commands
udp-flood detect
udp-flood detect non-specific
udp-flood threshold
