Collect Cisco vManage SD-WAN logs

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This document explains how to ingest Cisco vManage SD-WAN logs to Google Security Operations using Amazon S3.

Before you begin

Make sure you have the following prerequisites:

  • A Google SecOps instance
  • Privileged access to the Cisco vManage SD-WAN management console
  • Privileged access to AWS (S3, IAM, Lambda, EventBridge)

Collect Cisco vManage SD-WAN prerequisites (credentials and base URL)

  1. Sign in to the Cisco vManage Management Console.
  2. Go to Administration > Settings > Users.
  3. Create a new user or use an existing admin user with API access privileges.
  4. Copy and save in a secure location the following details:
    • Username
    • Password
    • vManage Base URL (for example, https://your-vmanage-server:8443)

Configure AWS S3 bucket and IAM for Google SecOps

  1. Create Amazon S3 bucket following this user guide: Creating a bucket
  2. Save bucket Name and Region for future reference (for example, cisco-sdwan-logs-bucket).
  3. Create a user following this user guide: Creating an IAM user.
  4. Select the created User.
  5. Select the Security credentials tab.
  6. Click Create Access Key in the Access Keys section.
  7. Select Third-party service as the Use case.
  8. Click Next.
  9. Optional: add a description tag.
  10. Click Create access key.
  11. Click Download CSV file to save the Access Key and Secret Access Key for later use.
  12. Click Done.
  13. Select the Permissions tab.
  14. Click Add permissions in the Permissions policies section.
  15. Select Add permissions.
  16. Select Attach policies directly
  17. Search for and select the AmazonS3FullAccess policy.
  18. Click Next.
  19. Click Add permissions.

Configure the IAM policy and role for S3 uploads

  1. In the AWS console, go to IAM > Policies > Create policy > JSON tab.

  2. Enter the following policy:

    {
  "Version": "2012-10-17",
  "Statement": [
    {
      "Sid": "AllowPutObjects",
      "Effect": "Allow",
      "Action": "s3:PutObject",
      "Resource": "arn:aws:s3:::cisco-sdwan-logs-bucket/*"
    },
    {
      "Sid": "AllowGetStateObject",
      "Effect": "Allow",
      "Action": "s3:GetObject",
      "Resource": "arn:aws:s3:::cisco-sdwan-logs-bucket/cisco-sdwan/state.json"
    }
  ]
}
    • Replace cisco-sdwan-logs-bucket if you entered a different bucket name.

  3. Click Next > Create policy.

  4. Go to IAM > Roles.

  5. Click Create role > AWS service > Lambda.

  6. Attach the newly created policy.

  7. Name the role cisco-sdwan-lambda-role and click Create role.

Create the Lambda function

  1. In the AWS Console, go to Lambda > Functions > Create function.
  2. Click Author from scratch.

  3. Provide the following configuration details:

    Setting Value
    Name cisco-sdwan-log-collector
    Runtime Python 3.13
    Architecture x86_64
    Execution role cisco-sdwan-lambda-role

  4. After the function is created, open the Code tab, delete the stub and enter the following code (cisco-sdwan-log-collector.py):

    import json
import boto3
import os
import urllib3
import urllib.parse
from datetime import datetime, timezone
from botocore.exceptions import ClientError

# Disable SSL warnings for self-signed certificates
urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)

# Environment variables
VMANAGE_HOST = os.environ['VMANAGE_HOST']
VMANAGE_USERNAME = os.environ['VMANAGE_USERNAME']  
VMANAGE_PASSWORD = os.environ['VMANAGE_PASSWORD']
S3_BUCKET = os.environ['S3_BUCKET']
S3_PREFIX = os.environ['S3_PREFIX']
STATE_KEY = os.environ['STATE_KEY']

s3_client = boto3.client('s3')
http = urllib3.PoolManager(cert_reqs='CERT_NONE')

class VManageAPI:
    def __init__(self, host, username, password):
        self.host = host.rstrip('/')
        self.username = username
        self.password = password
        self.cookies = None
        self.token = None

    def authenticate(self):
        """Authenticate with vManage and get session tokens"""
        try:
            # Login to get JSESSIONID
            login_url = f"{self.host}/j_security_check"
            login_data = urllib.parse.urlencode({
                'j_username': self.username,
                'j_password': self.password
            })

            response = http.request(
                'POST',
                login_url,
                body=login_data,
                headers={'Content-Type': 'application/x-www-form-urlencoded'},
                timeout=30
            )

            # Check if login was successful (vManage returns HTML on failure)
            if b'<html>' in response.data or response.status != 200:
                raise Exception("Authentication failed")

            # Extract cookies
            self.cookies = {}
            if 'Set-Cookie' in response.headers:
                cookie_header = response.headers['Set-Cookie']
                for cookie in cookie_header.split(';'):
                    if 'JSESSIONID=' in cookie:
                        self.cookies['JSESSIONID'] = cookie.split('JSESSIONID=')[1].split(';')[0]
                        break

            if not self.cookies.get('JSESSIONID'):
                raise Exception("Failed to get JSESSIONID")

            # Get XSRF token
            token_url = f"{self.host}/dataservice/client/token"
            headers = {
                'Content-Type': 'application/json',
                'Cookie': f"JSESSIONID={self.cookies['JSESSIONID']}"
            }

            response = http.request('GET', token_url, headers=headers, timeout=30)

            if response.status == 200:
                self.token = response.data.decode('utf-8')
                return True
            else:
                raise Exception(f"Failed to get XSRF token: {response.status}")

        except Exception as e:
            print(f"Authentication error: {e}")
            return False

    def get_headers(self):
        """Get headers for API requests"""
        return {
            'Content-Type': 'application/json',
            'Cookie': f"JSESSIONID={self.cookies['JSESSIONID']}",
            'X-XSRF-TOKEN': self.token
        }

    def get_audit_logs(self, last_timestamp=None):
        """Get audit logs from vManage"""
        try:
            url = f"{self.host}/dataservice/auditlog"
            headers = self.get_headers()

            # Build query for recent logs
            query = {
                "query": {
                    "condition": "AND",
                    "rules": []
                },
                "size": 10000
            }

            # Add timestamp filter if provided
            if last_timestamp:
                # Convert timestamp to epoch milliseconds for vManage API
                if isinstance(last_timestamp, str):
                    try:
                        dt = datetime.fromisoformat(last_timestamp.replace('Z', '+00:00'))
                        epoch_ms = int(dt.timestamp() * 1000)
                    except:
                        epoch_ms = int(last_timestamp)
                else:
                    epoch_ms = int(last_timestamp)

                query["query"]["rules"].append({
                    "value": [str(epoch_ms)],
                    "field": "entry_time",
                    "type": "date",
                    "operator": "greater"
                })
            else:
                # Get last 1 hour of logs by default
                query["query"]["rules"].append({
                    "value": ["1"],
                    "field": "entry_time", 
                    "type": "date",
                    "operator": "last_n_hours"
                })

            response = http.request(
                'POST',
                url,
                body=json.dumps(query),
                headers=headers,
                timeout=60
            )

            if response.status == 200:
                return json.loads(response.data.decode('utf-8'))
            else:
                print(f"Failed to get audit logs: {response.status}")
                return None

        except Exception as e:
            print(f"Error getting audit logs: {e}")
            return None

    def get_alarms(self, last_timestamp=None):
        """Get alarms from vManage"""
        try:
            url = f"{self.host}/dataservice/alarms"
            headers = self.get_headers()

            # Build query for recent alarms
            query = {
                "query": {
                    "condition": "AND",
                    "rules": []
                },
                "size": 10000
            }

            # Add timestamp filter if provided
            if last_timestamp:
                # Convert timestamp to epoch milliseconds for vManage API
                if isinstance(last_timestamp, str):
                    try:
                        dt = datetime.fromisoformat(last_timestamp.replace('Z', '+00:00'))
                        epoch_ms = int(dt.timestamp() * 1000)
                    except:
                        epoch_ms = int(last_timestamp)
                else:
                    epoch_ms = int(last_timestamp)

                query["query"]["rules"].append({
                    "value": [str(epoch_ms)],
                    "field": "entry_time",
                    "type": "date",
                    "operator": "greater"
                })
            else:
                # Get last 1 hour of alarms by default
                query["query"]["rules"].append({
                    "value": ["1"],
                    "field": "entry_time",
                    "type": "date", 
                    "operator": "last_n_hours"
                })

            response = http.request(
                'POST',
                url,
                body=json.dumps(query),
                headers=headers,
                timeout=60
            )

            if response.status == 200:
                return json.loads(response.data.decode('utf-8'))
            else:
                print(f"Failed to get alarms: {response.status}")
                return None

        except Exception as e:
            print(f"Error getting alarms: {e}")
            return None

    def get_events(self, last_timestamp=None):
        """Get events from vManage"""
        try:
            url = f"{self.host}/dataservice/events"
            headers = self.get_headers()

            # Build query for recent events
            query = {
                "query": {
                    "condition": "AND",
                    "rules": []
                },
                "size": 10000
            }

            # Add timestamp filter if provided  
            if last_timestamp:
                # Convert timestamp to epoch milliseconds for vManage API
                if isinstance(last_timestamp, str):
                    try:
                        dt = datetime.fromisoformat(last_timestamp.replace('Z', '+00:00'))
                        epoch_ms = int(dt.timestamp() * 1000)
                    except:
                        epoch_ms = int(last_timestamp)
                else:
                    epoch_ms = int(last_timestamp)

                query["query"]["rules"].append({
                    "value": [str(epoch_ms)],
                    "field": "entry_time",
                    "type": "date",
                    "operator": "greater"
                })
            else:
                # Get last 1 hour of events by default
                query["query"]["rules"].append({
                    "value": ["1"],
                    "field": "entry_time",
                    "type": "date",
                    "operator": "last_n_hours"
                })

            response = http.request(
                'POST',
                url,
                body=json.dumps(query),
                headers=headers,
                timeout=60
            )

            if response.status == 200:
                return json.loads(response.data.decode('utf-8'))
            else:
                print(f"Failed to get events: {response.status}")
                return None

        except Exception as e:
            print(f"Error getting events: {e}")
            return None

def get_last_run_time():
    """Get the last successful run timestamp from S3"""
    try:
        response = s3_client.get_object(Bucket=S3_BUCKET, Key=STATE_KEY)
        state_data = json.loads(response['Body'].read())
        return state_data.get('last_run_time')
    except ClientError as e:
        if e.response['Error']['Code'] == 'NoSuchKey':
            print("No previous state found, collecting last hour of logs")
            return None
        else:
            print(f"Error reading state: {e}")
            return None
    except Exception as e:
        print(f"Error reading state: {e}")
        return None

def update_last_run_time(timestamp):
    """Update the last successful run timestamp in S3"""
    try:
        state_data = {
            'last_run_time': timestamp,
            'updated_at': datetime.now(timezone.utc).isoformat()
        }

        s3_client.put_object(
            Bucket=S3_BUCKET,
            Key=STATE_KEY,
            Body=json.dumps(state_data),
            ContentType='application/json'
        )

        print(f"Updated state with timestamp: {timestamp}")

    except Exception as e:
        print(f"Error updating state: {e}")

def upload_logs_to_s3(logs_data, log_type, timestamp):
    """Upload logs to S3 bucket"""
    try:
        if not logs_data or 'data' not in logs_data or not logs_data['data']:
            print(f"No {log_type} data to upload")
            return

        # Create filename with timestamp
        dt = datetime.now(timezone.utc)
        filename = f"{S3_PREFIX}{log_type}/{dt.strftime('%Y/%m/%d')}/{log_type}_{dt.strftime('%Y%m%d_%H%M%S')}.json"

        # Upload to S3
        s3_client.put_object(
            Bucket=S3_BUCKET,
            Key=filename,
            Body=json.dumps(logs_data),
            ContentType='application/json'
        )

        print(f"Uploaded {len(logs_data['data'])} {log_type} records to s3://{S3_BUCKET}/{filename}")

    except Exception as e:
        print(f"Error uploading {log_type} to S3: {e}")

def lambda_handler(event, context):
    """Main Lambda handler function"""
    print(f"Starting Cisco vManage log collection at {datetime.now(timezone.utc)}")

    try:
        # Get last run time
        last_run_time = get_last_run_time()

        # Initialize vManage API client
        vmanage = VManageAPI(VMANAGE_HOST, VMANAGE_USERNAME, VMANAGE_PASSWORD)

        # Authenticate
        if not vmanage.authenticate():
            return {
                'statusCode': 500,
                'body': json.dumps('Failed to authenticate with vManage')
            }

        print("Successfully authenticated with vManage")

        # Current timestamp for state tracking (store as epoch milliseconds)
        current_time = int(datetime.now(timezone.utc).timestamp() * 1000)

        # Collect different types of logs
        log_types = [
            ('audit_logs', vmanage.get_audit_logs),
            ('alarms', vmanage.get_alarms), 
            ('events', vmanage.get_events)
        ]

        total_records = 0

        for log_type, get_function in log_types:
            try:
                print(f"Collecting {log_type}...")
                logs_data = get_function(last_run_time)

                if logs_data:
                    upload_logs_to_s3(logs_data, log_type, current_time)
                    if 'data' in logs_data:
                        total_records += len(logs_data['data'])

            except Exception as e:
                print(f"Error processing {log_type}: {e}")
                continue

        # Update state with current timestamp
        update_last_run_time(current_time)

        print(f"Collection completed. Total records processed: {total_records}")

        return {
            'statusCode': 200,
            'body': json.dumps({
                'message': 'Log collection completed successfully',
                'total_records': total_records,
                'timestamp': datetime.now(timezone.utc).isoformat()
            })
        }

    except Exception as e:
        print(f"Lambda execution error: {e}")
        return {
            'statusCode': 500,
            'body': json.dumps(f'Error: {str(e)}')
        }

  5. Go to Configuration > Environment variables.

  6. Click Edit > Add new environment variable.

  7. Enter the following environment variables, replacing with your values:

    Key Example value
    S3_BUCKET cisco-sdwan-logs-bucket
    S3_PREFIX cisco-sdwan/
    STATE_KEY cisco-sdwan/state.json
    VMANAGE_HOST https://your-vmanage-server:8443
    VMANAGE_USERNAME your-vmanage-username
    VMANAGE_PASSWORD your-vmanage-password

  8. After the function is created, stay on its page (or open Lambda > Functions > cisco-sdwan-log-collector).

  9. Select the Configuration tab.

  10. In the General configuration panel click Edit.

  11. Change Timeout to 5 minutes (300 seconds) and click Save.

Create an EventBridge schedule

  1. Go to Amazon EventBridge > Scheduler > Create schedule.
  2. Provide the following configuration details:
    • Recurring schedule: Rate (1 hour)
    • Target: your Lambda function cisco-sdwan-log-collector
    • Name: cisco-sdwan-log-collector-1h
  3. Click Create schedule.

Optional: Create read-only IAM user & keys for Google SecOps

  1. In the AWS Console. go to IAM > Users > Add users.
  2. Click Add users.
  3. Provide the following configuration details:
    • User: secops-reader
    • Access type: Access key — Programmatic access
  4. Click Create user.
  5. Attach minimal read policy (custom): Users > secops-reader > Permissions > Add permissions > Attach policies directly > Create policy.

  6. In the JSON editor, enter the following policy:

    {
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": ["s3:ListBucket"],
      "Resource": "arn:aws:s3:::cisco-sdwan-logs-bucket",
      "Condition": {
        "StringLike": {
          "s3:prefix": ["cisco-sdwan/*"]
        }
      }
    },
    {
      "Effect": "Allow",
      "Action": ["s3:GetObject"],
      "Resource": "arn:aws:s3:::cisco-sdwan-logs-bucket/cisco-sdwan/*"
    }
  ]
}

  7. Name the policy secops-reader-policy.

  8. Click Create policy.

  9. Go back to the user creation, search for and select secops-reader-policy.

  10. Click Next: Tags.

  11. Click Next: Review.

  12. Click Create user.

  13. Download the CSV (these values are entered into the feed).

Configure a feed in Google SecOps to ingest Cisco vManage SD-WAN logs

  1. Go to SIEM Settings > Feeds.
  2. Click + Add New Feed.
  3. In the Feed name field, enter a name for the feed (for example, Cisco SD-WAN logs).
  4. Select Amazon S3 V2 as the Source type.
  5. Select Cisco vManage SD-WAN as the Log type.
  6. Click Next.
  7. Specify values for the following input parameters:
    • S3 URI: s3://cisco-sdwan-logs-bucket/cisco-sdwan/
    • Source deletion options: Select the deletion option according to your preference.
    • Maximum File Age: Include files modified in the last number of days. Default 180 Days.
    • Access Key ID: User access key with access to the S3 bucket.
    • Secret Access Key: User secret key with access to the S3 bucket.
    • Asset namespace: the asset namespace.
    • Ingestion labels: the label applied to the events from this feed.
  8. Click Next.
  9. Review your new feed configuration in the Finalize screen, and then click Submit.

Need more help? Get answers from Community members and Google SecOps professionals.