""ET INFO Applied Privacy DNS over HTTPS Certificate Inbound""

SID: 2035125

Revision: 2

Class Type: misc-activity

Metadata: attack_target Client_Endpoint, created_at 2022_02_08, deployment Perimeter, performance_impact Low, signature_severity Informational, tag DoH, updated_at 2022_02_08

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: 443

Destination Network: $HOME_NET

Destination Port: any

Flow: established,to_client

Contents:

  • Value: "|16|"

  • Value: "|0b|"

  • Value: "|06 03 55 04 03|"

  • Value: "|17|doh.applied-privacy.net"

  • Value: "|06 03 55 04 06|"

  • Value: "|02|US"

  • Value: "|06 03 55 04 0a|"

  • Value: "|0d|Let's Encrypt"

  • Value: "|06 03 55 04 03|"

  • Value: "|02|R3"

Within: 3

PCRE:

Special Options:

  • fast_pattern

source