Collect Cisco IronPort logs

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This document explains how to ingest Cisco IronPort logs to Google Security Operations using Bindplane. The parser extracts fields from the syslog messages, specifically those related to AccessLogs_chron events. It uses grok patterns to parse the message, converts data types, and maps the extracted fields to the Unified Data Model (UDM), handling various Cisco Ironport-specific fields like policy groups and access decisions. It also performs basic error handling and sets metadata fields like vendor and product name.

Before you begin

Make sure you have the following prerequisites:

  • Google SecOps instance
  • Windows 2016 or later, or a Linux host with systemd
  • If running behind a proxy, ensure firewall ports are open
  • Privileged access to Cisco IronPort

Get Google SecOps ingestion authentication file

  1. Sign in to the Google SecOps console.
  2. Go to SIEM Settings > Collection Agents.
  3. Download the Ingestion Authentication File.
    • Save the file securely on the system where Bindplane will be installed.

Get Google SecOps customer ID

  1. Sign in to the Google SecOps console.
  2. Go to SIEM Settings > Profile.
  3. Copy and save the Customer ID from the Organization Details section.

Install the Bindplane agent

Install the Bindplane agent on your Windows or Linux operating system according to the following instructions.

Windows installation

  1. Open the Command Prompt or PowerShell as an administrator.
  2. Run the following command:

    msiexec /i "https://github.com/observIQ/bindplane-agent/releases/latest/download/observiq-otel-collector.msi" /quiet
    

Linux installation

  1. Open a terminal with root or sudo privileges.
  2. Run the following command:

    sudo sh -c "$(curl -fsSlL https://github.com/observiq/bindplane-agent/releases/latest/download/install_unix.sh)" install_unix.sh
    

Additional installation resources

For additional installation options, consult the installation guide.

Configure the Bindpolane agent to ingest Syslog and send to Google SecOps

  1. Access the configuration file:
    • Locate the config.yaml file. Typically, it's in the /etc/bindplane-agent/ directory on Linux or in the installation directory on Windows.
    • Open the file using a text editor (for example, nano, vi, or Notepad).
  2. Edit the config.yaml file as follows:

    receivers:
        udplog:
            # Replace the port and IP address as required
            listen_address: "0.0.0.0:514"
    
    exporters:
        chronicle/chronicle_w_labels:
            compression: gzip
            # Adjust the path to the credentials file you downloaded in Step 1
            creds_file_path: '/path/to/ingestion-authentication-file.json'
            # Replace with your actual customer ID from Step 2
            customer_id: <customer_id>
            endpoint: malachiteingestion-pa.googleapis.com
            # Add optional ingestion labels for better organization
            log_type: 'CISCO_IRONPORT'
            raw_log_field: body
            ingestion_labels:
    
    service:
        pipelines:
            logs/source0__chronicle_w_labels-0:
                receivers:
                    - udplog
                exporters:
                    - chronicle/chronicle_w_labels
    
    • Replace the port and IP address as required in your infrastructure.
    • Replace <customer_id> with the actual customer ID.
    • Update /path/to/ingestion-authentication-file.json to the path where the authentication file was saved in the Get Google SecOps ingestion authentication file section.

Restart the Bindplane agent to apply the changes

  • To restart the Bindplane agent in Linux, run the following command:

    sudo systemctl restart bindplane-agent
    
  • To restart the Bindplane agent in Windows, you can either use the Services console or enter the following command:

    net stop BindPlaneAgent && net start BindPlaneAgent
    

Configure Syslog on Cisco IronPort

  1. Sign in to the Cisco IronPort web UI.
  2. Click System Administration > Log Subscriptions.
  3. Click Add Log Subscription.
  4. Provide the following configuration details:
    • Log Type: Select Access Logs or other logs you would like export.
    • Log Style: Select Squid.
    • File Name: Provide a filename if not provided by default.
    • Retrieval Method: Select Syslog Push (uses default port 514).
    • Hostname: Enter the Bindplane agent IP address.
    • Protocol: Select UDP.
    • Facility: Select local0 or syslog.
  5. Click Submit.

UDM mapping table

Log Field UDM Mapping Logic
AccessLogs_chron metadata.product_event_type Directly mapped from the product_event field extracted by the first grok parser.
acl_decision_tag security_result.detection_fields.key Value is "ACL Decision Tag". Parser logic sets this value when acl_decision_tag is present in the logs.
acl_decision_tag security_result.detection_fields.value Directly mapped from the acl_decision_tag field extracted by the second grok parser.
access_or_decryption_policy_group security_result.detection_fields.key Value is "AccessOrDecryptionPolicyGroup". Parser logic sets this value when access_or_decryption_policy_group is present in the logs.
access_or_decryption_policy_group security_result.detection_fields.value Directly mapped from the access_or_decryption_policy_group field extracted by the second grok parser.
authenticated_user principal.user.userid Extracted from the authenticated_user field using grok and gsub to remove backslashes and quotes.
cache_hierarchy_retrieval security_result.detection_fields.key Value is "Cache Hierarchy Retrieval". Parser logic sets this value when cache_hierarchy_retrieval is present in the logs.
cache_hierarchy_retrieval security_result.detection_fields.value Directly mapped from the cache_hierarchy_retrieval field extracted by the second grok parser.
data_security_policy_group security_result.detection_fields.key Value is "DataSecurityPolicyGroup". Parser logic sets this value when data_security_policy_group is present in the logs.
data_security_policy_group security_result.detection_fields.value Directly mapped from the data_security_policy_group field extracted by the second grok parser.
external_dlp_policy_group security_result.detection_fields.key Value is "ExternalDlpPolicyGroup". Parser logic sets this value when external_dlp_policy_group is present in the logs.
external_dlp_policy_group security_result.detection_fields.value Directly mapped from the external_dlp_policy_group field extracted by the second grok parser.
hostname principal.asset.hostname Directly mapped from the hostname field extracted by the first grok parser.
hostname principal.hostname Directly mapped from the hostname field extracted by the first grok parser.
http_method network.http.method Directly mapped from the http_method field extracted by the second grok parser.
http_response_code network.http.response_code Directly mapped from the http_response_code field extracted by the second grok parser and converted to integer.
identity_policy_group security_result.detection_fields.key Value is "IdentityPolicyGroup". Parser logic sets this value when identity_policy_group is present in the logs.
identity_policy_group security_result.detection_fields.value Directly mapped from the identity_policy_group field extracted by the second grok parser. Copied from the timestamp field after the date filter processes it. Set to "STATUS_UPDATE" if has_principal is true, otherwise set to "GENERIC_EVENT". Constant value: "Cisco Ironport". Constant value: "Cisco".
outbound_malware_scanning_policy_group security_result.detection_fields.key Value is "OutboundMalwareScanningPolicyGroupS". Parser logic sets this value when outbound_malware_scanning_policy_group is present in the logs.
outbound_malware_scanning_policy_group security_result.detection_fields.value Directly mapped from the outbound_malware_scanning_policy_group field extracted by the second grok parser.
request_method_uri target.url Directly mapped from the request_method_uri field extracted by the second grok parser.
result_code security_result.detection_fields.key Value is "Result Code". Parser logic sets this value when result_code is present in the logs.
result_code security_result.detection_fields.value Directly mapped from the result_code field extracted by the second grok parser.
routing_policy_group security_result.detection_fields.key Value is "RoutingPolicyGroup". Parser logic sets this value when routing_policy_group is present in the logs.
routing_policy_group security_result.detection_fields.value Directly mapped from the routing_policy_group field extracted by the second grok parser.
severity security_result.severity Mapped from the severity field. If the value is "Info", it's set to "INFORMATIONAL".
source_ip principal.asset.ip Directly mapped from the source_ip field extracted by the second grok parser.
source_ip principal.ip Directly mapped from the source_ip field extracted by the second grok parser.
timestamp timestamp Extracted from the message field using grok and then parsed using the date filter.
total_bytes network.sent_bytes Directly mapped from the total_bytes field extracted by the second grok parser and converted to unsigned integer. Only mapped if not empty or "0".

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