Configuring ICMP Flood Attack Screen

date_range 18-Aug-21

arrow_backward

arrow_forward

This topic describes how to configure detection of an ICMP flood attack.

An ICMP flood typically occurs when an ICMP echo request overloads the victim with many requests such that the ICMP echo request spends all its resources responding until it can no longer process valid network traffic. When enabling the ICMP flood protection feature, you can set a threshold that, once exceeded, invokes the ICMP flood attack protection feature.

To enable detection of an ICMP flood attack:

Configure interfaces and assign an IP address to interfaces.

content_copy zoom_out_map
[edit]
user@host# set interfaces ge-0/0/1 unit 0 family inet address 192.0.2.0/24
user@host# set interfaces ge-0/0/3 unit 0 family inet address 198.51.100.0/24

Configure security zones trustZone and untrustZone and assign interfaces to them.

content_copy zoom_out_map
[edit]
user@host# set security zones security-zone trustZone host-inbound-traffic system-services all
user@host# set security zones security-zone trustZone host-inbound-traffic protocols all
user@host# set security zones security-zone trustZone interfaces ge-0/0/1.0
user@host# set security zones security-zone untrustZone host-inbound-traffic system-services all
user@host# set security zones security-zone untrustZone host-inbound-traffic protocols all
user@host# set security zones security-zone untrustZone interfaces ge-0/0/3.0

Configure security policies from untrustZone to trustZone.

content_copy zoom_out_map
[edit]
user@host# set security policies from-zone untrustZone to-zone trustZone policy policy1 match source-address any
user@host# set security policies from-zone untrustZone to-zone trustZone policy policy1 match destination-address any
user@host# set security policies from-zone untrustZone to-zone trustZone policy policy1 match application any
user@host# set security policies from-zone untrustZone to-zone trustZone policy policy1 then permit
user@host# set security policies default-policy deny-all

Configure security screens and attach them to untrustZone.

content_copy zoom_out_map
[edit]
user@host# set security screen ids-option untrustScreen icmp flood
user@host# set security screen ids-option untrustScreen alarm-without-drop
user@host# set security zones security-zone untrustZone screen untrustScreen

Configure syslog.

content_copy zoom_out_map
[edit]
user@host# set system syslog file syslog any any
user@host# set system syslog file syslog archive size 10000000
user@host# set system syslog file syslog structured-data
user@host# set security policies from-zone untrustZone to-zone trustZone policy policy1 then log session-init
user@host# set security policies from-zone untrustZone to-zone trustZone policy policy1 then log session-close

Commit the configuration.
```
[edit]
user@host# commit
```

arrow_backward PREVIOUS Configuring TCP SYN and RST Attack Screen

NEXT arrow_forward Configuring TCP SYN Flood Attack Screen

Common Criteria Configuration Guide for NFX350 Network Services Platform

Configuring ICMP Flood Attack Screen

Stay in touch

Helped me install or use the product
Accelerated my deployment

Discuss the product with a co-worker
Make a purchase inquiry

Common Criteria Configuration Guide for NFX350 Network Services Platform

Configuring ICMP Flood Attack Screen

Related Documentation

Stay in touch