""ET WEB_CLIENT Possible Apache DDos UA Observed (DDos Apache) Inbound""

SID: 2029984

Revision: 3

Class Type: attempted-dos

Metadata: affected_product Web_Server_Applications, attack_target Web_Server, created_at 2020_04_21, deployment Perimeter, signature_severity Major, updated_at 2024_01_27

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: any

Destination Network: [$HOME_NET,$HTTP_SERVERS]

Destination Port: $HTTP_PORTS

Flow: established,to_client

Contents:

  • Value: "User-Agent|3a 20|DDos Apache"

Within:

PCRE:

Special Options:

  • http_header

source