""GPL FTP PORT bounce attempt""

SID: 2103441

Revision: 2

Class Type: misc-attack

Metadata: created_at 2010_09_23, updated_at 2012_07_30

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: any

Destination Network: $HOME_NET

Destination Port: 21

Flow: to_server,established

Contents:

  • Value: "PORT"

Within:

PCRE: "/^PORT/smi"

Special Options:

  • nocase

  • ftpbounce

source