description: Pipeline for parsing junipersrx firewall logs (idp pipeline)
processors:
#######################
## ECS Event Mapping ##
#######################
- set:
    field: event.kind
    value: event
- set:
    field: event.outcome
    value: success
    if: "ctx.juniper?.srx?.tag != null"
- append:
    field: event.category
    value: network
- set:
    field: event.kind
    value: alert
    if: '["IDP_ATTACK_LOG_EVENT", "IDP_APPDDOS_APP_STATE_EVENT", "IDP_APPDDOS_APP_ATTACK_EVENT", "IDP_ATTACK_LOG_EVENT_LS", "IDP_APPDDOS_APP_STATE_EVENT_LS", "IDP_APPDDOS_APP_ATTACK_EVENT_LS"].contains(ctx.juniper?.srx?.tag)'
- append:
    field: event.category
    value: intrusion_detection
    if: '["IDP_ATTACK_LOG_EVENT", "IDP_APPDDOS_APP_STATE_EVENT", "IDP_APPDDOS_APP_ATTACK_EVENT", "IDP_ATTACK_LOG_EVENT_LS", "IDP_APPDDOS_APP_STATE_EVENT_LS", "IDP_APPDDOS_APP_ATTACK_EVENT_LS"].contains(ctx.juniper?.srx?.tag)'
- append:
    field: event.type
    value:
      - info
      - denied
      - connection
    if: '["IDP_ATTACK_LOG_EVENT", "IDP_APPDDOS_APP_STATE_EVENT", "IDP_APPDDOS_APP_ATTACK_EVENT", "IDP_ATTACK_LOG_EVENT_LS", "IDP_APPDDOS_APP_STATE_EVENT_LS", "IDP_APPDDOS_APP_ATTACK_EVENT_LS"].contains(ctx.juniper?.srx?.tag)'
- append:
    field: event.type
    value:
     - allowed
     - connection
    if: '!["IDP_ATTACK_LOG_EVENT", "IDP_APPDDOS_APP_STATE_EVENT", "IDP_APPDDOS_APP_ATTACK_EVENT", "IDP_ATTACK_LOG_EVENT_LS", "IDP_APPDDOS_APP_STATE_EVENT_LS", "IDP_APPDDOS_APP_ATTACK_EVENT_LS"].contains(ctx.juniper?.srx?.tag)'
- set:
    field: event.action
    value: application_ddos
    if: '["IDP_APPDDOS_APP_STATE_EVENT", "IDP_APPDDOS_APP_ATTACK_EVENT", "IDP_APPDDOS_APP_STATE_EVENT_LS", "IDP_APPDDOS_APP_ATTACK_EVENT_LS"].contains(ctx.juniper?.srx?.tag)'
- set:
    field: event.action
    value: security_threat
    if: '["IDP_ATTACK_LOG_EVENT", "IDP_ATTACK_LOG_EVENT_LS"].contains(ctx.juniper?.srx?.tag)'


####################################
## ECS Server/Destination Mapping ##
####################################
- rename:
    field: juniper.srx.destination_address
    target_field: destination.ip
    ignore_missing: true
    if: "ctx.juniper?.srx?.destination_address != null"
- set:
    field: server.ip
    value: '{{destination.ip}}'
    if: "ctx.destination?.ip != null"
- rename:
    field: juniper.srx.nat_destination_address
    target_field: destination.nat.ip
    ignore_missing: true
    if: "ctx.juniper?.srx?.nat_destination_address != null"
- convert:
    field: juniper.srx.destination_port
    target_field: destination.port
    type: long
    ignore_failure: true
    ignore_missing: true
    if: "ctx.juniper?.srx?.destination_port != null"
- set:
    field: server.port
    value: '{{destination.port}}'
    if: "ctx.destination?.port != null"
- convert:
    field: server.port
    target_field: server.port
    type: long
    ignore_failure: true
    ignore_missing: true
    if: "ctx.server?.port != null"
- convert:
    field: juniper.srx.nat_destination_port
    target_field: destination.nat.port
    type: long
    ignore_failure: true
    ignore_missing: true
    if: "ctx.juniper?.srx['nat_destination_port'] != null"
- set:
    field: server.nat.port
    value: '{{destination.nat.port}}'
    if: "ctx.destination?.nat?.port != null"
- convert:
    field: server.nat.port
    target_field: server.nat.port
    type: long
    ignore_failure: true
    ignore_missing: true
    if: "ctx.server?.nat?.port != null"
- convert:
    field: juniper.srx.inbound_bytes
    target_field: destination.bytes
    type: long
    ignore_failure: true
    ignore_missing: true
    if: "ctx.juniper?.srx?.inbound_bytes != null"
- set:
    field: server.bytes
    value: '{{destination.bytes}}'
    if: "ctx.destination?.bytes != null"
- convert:
    field: server.bytes
    target_field: server.bytes
    type: long
    ignore_failure: true
    ignore_missing: true
    if: "ctx.server?.bytes != null"
- convert:
    field: juniper.srx.inbound_packets
    target_field: destination.packets
    type: long
    ignore_failure: true
    ignore_missing: true
    if: "ctx.juniper?.srx?.inbound_packets !=null"
- set:
    field: server.packets
    value: '{{destination.packets}}'
    if: "ctx.destination?.packets != null"
- convert:
    field: server.packets
    target_field: server.packets
    type: long
    ignore_failure: true
    ignore_missing: true
    if: "ctx.server?.packets != null"

###############################
## ECS Client/Source Mapping ##
###############################
- rename:
    field: juniper.srx.source_address
    target_field: source.ip
    ignore_missing: true
    if: "ctx.juniper?.srx?.source_address != null"
- set:
    field: client.ip
    value: '{{source.ip}}'
    if: "ctx.source?.ip != null"
- rename:
    field: juniper.srx.nat_source_address
    target_field: source.nat.ip
    ignore_missing: true
    if: "ctx.juniper?.srx?.nat_source_address != null"
- rename:
    field: juniper.srx.sourceip
    target_field: source.ip
    ignore_missing: true
    if: "ctx.juniper?.srx?.sourceip != null"
- convert:
    field: juniper.srx.source_port
    target_field: source.port
    type: long
    ignore_failure: true
    ignore_missing: true
    if: "ctx.juniper?.srx?.source_port != null"
- set:
    field: client.port
    value: '{{source.port}}'
    if: "ctx.source?.port != null"
- convert:
    field: client.port
    target_field: client.port
    type: long
    ignore_failure: true
    ignore_missing: true
    if: "ctx.client?.port != null"
- convert:
    field: juniper.srx.nat_source_port
    target_field: source.nat.port
    type: long
    ignore_failure: true
    ignore_missing: true
    if: "ctx.juniper?.srx?.nat_source_port != null"
- set:
    field: client.nat.port
    value: '{{source.nat.port}}'
    if: "ctx.source?.nat?.port != null"
- convert:
    field: client.nat.port
    target_field: client.nat.port
    type: long
    ignore_failure: true
    ignore_missing: true
    if: "ctx.client?.nat?.port != null"
- convert:
    field: juniper.srx.outbound_bytes
    target_field: source.bytes
    type: long
    ignore_failure: true
    ignore_missing: true
    if: "ctx.juniper?.srx?.outbound_bytes != null"
- set:
    field: client.bytes
    value: '{{source.bytes}}'
    if: "ctx.source?.bytes != null"
- convert:
    field: client.bytes
    target_field: client.bytes
    type: long
    ignore_failure: true
    ignore_missing: true
    if: "ctx.client?.bytes != null"
- convert:
    field: juniper.srx.outbound_packets
    target_field: source.packets
    type: long
    ignore_failure: true
    ignore_missing: true
    if: "ctx.juniper?.srx?.outbound_packets != null"
- set:
    field: client.packets
    value: '{{source.packets}}'
    if: "ctx.source?.packets != null"
- convert:
    field: client.packets
    target_field: client.packets
    type: long
    ignore_failure: true
    ignore_missing: true
    if: "ctx.client?.packets != null"
- rename:
    field: juniper.srx.username
    target_field: source.user.name
    ignore_missing: true
    if: "ctx.juniper?.srx?.username != null"

######################
## ECS Rule Mapping ##
######################
- rename:
    field: juniper.srx.rulebase_name
    target_field: rule.name
    ignore_missing: true
    if: "ctx.juniper?.srx?.rulebase_name != null"
- rename:
    field: juniper.srx.rule_name
    target_field: rule.id
    ignore_missing: true
    if: "ctx.juniper?.srx?.rule_name != null"

#########################
## ECS Network Mapping ##
#########################
- rename:
    field: juniper.srx.protocol_name
    target_field: network.protocol
    ignore_missing: true
    if: "ctx.juniper?.srx?.protocol_name != null"

#########################
## ECS message Mapping ##
#########################
- rename:
    field: juniper.srx.message
    target_field: message
    ignore_missing: true
    if: "ctx.juniper?.srx?.message != null"

#############
## Cleanup ##
#############
- remove:
    field:
    - juniper.srx.destination_port
    - juniper.srx.nat_destination_port
    - juniper.srx.outbound_bytes
    - juniper.srx.outbound_packets
    - juniper.srx.source_port
    - juniper.srx.nat_source_port
    - juniper.srx.inbound_bytes
    - juniper.srx.inbound_packets
    ignore_missing: true

on_failure:
- set:
    field: error.message
    value: '{{ _ingest.on_failure_message }}'