
475
You can configure flood attack detection and prevention for a specific IP address. For non-specific IP
addresses, the device uses the global attack prevention settings.
Configuring a SYN flood attack defense policy
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter attack defense policy
view.
attack-defense policy
policy-name
N/A
3.
Enable global SYN flood
attack detection.
syn-flood detect non-specific
By default, global SYN flood attack
detection is disabled.
4.
Set the global trigger
threshold for SYN flood
attack prevention.
syn-flood threshold
threshold-value
The default setting is 1000.
5.
Specify global actions
against SYN flood attacks.
syn-flood action
{
drop
|
logging
} *
By default, no global action is
specified for SYN flood attacks.
6.
Configure IP
address-specific SYN flood
attack detection.
syn-flood
detect
{
ip
ipv4-address
|
ipv6
ipv6-address
} [
vpn-instance
vpn-instance-name
] [
threshold
threshold-value
] [
action
{
drop
|
logging
} * ]
By default, IP address-specific SYN
flood attack detection is not
configured.
Configuring an ACK flood attack defense policy
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter attack defense policy
view.
attack-defense policy
policy-name
N/A
3.
Enable global ACK flood
attack detection.
ack-flood detect non-specific
By default, global ACK flood attack
detection is disabled.
4.
Set the global trigger
threshold for ACK flood
attack prevention.
ack-flood threshold
threshold-value
The default setting is 1000.
5.
Specify global actions
against ACK flood attacks.
ack-flood action
{
drop
|
logging
} *
By default, no global action is
specified for ACK flood attacks.
6.
Configure IP
address-specific ACK flood
attack detection.
ack-flood
detect
{
ip
ipv4-address
|
ipv6
ipv6-address
} [
vpn-instance
vpn-instance-name
] [
threshold
threshold-value
] [
action
{
drop
|
logging
} * ]
By default, IP address-specific ACK
flood attack detection is not
configured.
Configuring a SYN-ACK flood attack defense policy
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter attack defense policy
view.
attack-defense policy
policy-name
N/A
3.
Enable global SYN-ACK
flood attack detection.
syn-ack-flood detect
non-specific
By default, global SYN-ACK flood
attack detection is disabled.
Содержание 10500 series
Страница 326: ...312 No duration limit for this SA ...