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Co-authored by Tejas Sheth, Sr. Security Specialist, Amazon Web Services – AISPL.
Risk-based Vulnerability Management (RBVM) represents a strategic approach to cyber security that focuses on… Read more on Cisco Blogs
Cisco supports the Open Cybersecurity Schema Framework and is a launch partner of AWS Security Lake
The Cisco Secure Technical Alliance supports the open ecosystem and AWS is a valued technology alliance partner, with integrations across the Cisco Secure portfolio, including SecureX, Secure Firewall, Secure Cloud Analytics, Duo, Umbrella, Web Security Appliance, Secure Workload, Secure Endpoint, Identity Services Engine, and more.
We are proud to be a launch partner of AWS Security Lake, which allows customers to build a security data lake from integrated cloud and on-premises data sources as well as from their private applications. With support for the Open Cybersecurity Schema Framework (OCSF) standard, Security Lake reduces the complexity and costs for customers to make their security solutions data accessible to address a variety of security use cases such as threat detection, investigation, and incident response. Security Lake helps organizations aggregate, manage, and derive value from log and event data in the cloud and on-premises to give security teams greater visibility across their organizations.
With Security Lake, customers can use the security and analytics solutions of their choice to simply query that data in place or ingest the OCSF-compliant data to address further use cases. Security Lake helps customers optimize security log data retention by optimizing the partitioning of data to improve performance and reduce costs. Now, analysts and engineers can easily build and use a centralized security data lake to improve the protection of workloads, applications, and data.
Cisco Secure Firewall serves as an organization’s centralized source of security information. It uses advanced threat detection to flag and act on malicious ingress, egress, and east-west traffic while its logging capabilities store information on events, threats, and anomalies. By integrating Secure Firewall with AWS Security Lake, through Secure Firewall Management Center, organizations will be able to store firewall logs in a structured and scalable manner.
The eNcore client provides a way to tap into message-oriented protocol to stream events and host profile information from the Cisco Secure Firewall Management Center. The eNcore client can request event and host profile data from a Management Center, and intrusion event data only from a managed device. The eNcore application initiates the data stream by submitting request messages, which specify the data to be sent, and then controls the message flow from the Management Center or managed device after streaming begins.
These messages are mapped to OCSF Network Activity events using a series of transformations embedded in the eNcore code base, acting as both author and mapper personas in the OCSF schema workflow. Once validated with an internal OCSF schema the messages are then written to two sources, first a local JSON formatted file in a configurable directory path, and second compressed parquet files partitioned by event hour in the S3 Amazon Security Lake source bucket. The S3 directories contain the formatted log are crawled hourly and the results are stored in an AWS Security Lake database. From there you can get a visual of the schema definitions extracted by the AWS Glue Crawler, identify fieldnames, data types, and other metadata associated with your network activity events. Event logs can also be queried using Amazon Athena to visualize log data.
To utilize the eNcore client with AWS Security Lake, first go to the Cisco public GitHub repository for Firepower eNcore, OCSF branch.
Download and run the cloud formation script eNcoreCloudFormation.yaml.
The Cloud Formation script will prompt for additional fields needed in the creation process, they are as follows:
Cidr Block: IP Address range for the provisioned client, defaults to the range shown below
Instance Type: The ec2 instance size, defaults to t2.medium
KeyName A pem key file that will permit access to the instance
AmazonSecurityLakeBucketForCiscoURI: The S3 location of your Data Lake S3 container.
FMC IP: IP or Domain Name of the Cisco Secure Firewall Mangement Portal
After the Cloud Formation setup is complete it can take anywhere from 3-5 minutes to provision resources in your environment, the cloud formation console provides a detailed view of all the resources generated from the cloud formation script as shown below.
Once the ec2 instance for the eNcore client is ready, we need to whitelist the client IP address in our Secure Firewall Server and generate a certificate file for secure endpoint communication.
In the Secure Firewall Dashboard, navigate to Search->eStreamer, to find the allow list of Client IP Addresses that are permitted to receive data, click Add and supply the Client IP Address that was provisioned for our ec2 instance. You will also be asked to supply a password, click Save to create a secure certificate file for your new ec2 instance.
Download the Secure Certificate you just created, and copy it to the /encore directory in your ec2 instance.
Use CloudShell or SSH from your ec2 instance, navigate to the /encore directory and run the command bash encore.sh test
You will be prompted for the certificate password, once that is entered you should see a Successful Communication message as shown below.
Run the command bash encore.sh foreground
This will begin the data relay and ingestion process. We can then navigate to the S3 Amazon Security Lake bucket we configured earlier, to see OCSF compliant logs formatted in gzip parquet files in a time-based directory structure. Additionally, a local representation of logs is available under /encore/data/* that can be used to validate log file creation.
Amazon Security Lake then runs a crawler task every hour to parse and consume the logs files in the target s3 directory, after which we can view the results in Athena Query.
More information on how to configure and tune the encore eStreamer client can be found on our official website, this includes details on how filter certain event types to focus your data retention policy, and guidelines for performance and other detailed configuration settings.
You can participate in the AWS Security Lake public preview. For more information, please visit the Product Page and review the User Guide.
While you are at AWS re:Invent, go see a demo video of the Security Lake integrations in the Cisco Booth #2411, from November 29 to December 2, 2022, at the Cloud, Network and User Security with Duo demo station.
Learn more about Cisco and AWS on the Cisco Secure Technical Alliance website for AWS.
Thank you to Seyed Khadem-Djahaghi, who spend long hours working with the beta to develop this integration and is the primary for developer of eNore.
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Organizations embrace the public cloud for the agility, scalability, and reliability it offers when running applications. But just as organizations need these capabilities to ensure their applications operate where needed and as needed, they also require their security does the same. Organizations may introduce multiple individual firewalls into their AWS infrastructure to produce this outcome. In theory, this may be a good decision, but in practice—this could lead to asymmetric routing issues. Complex SNAT configuration can mitigate asymmetric routing issues, but this isn’t practical for sustaining public cloud operations. Organizations are looking out for their long-term cloud strategies by ruling out SNAT and are calling for a more reliable and scalable solution for connecting their applications and security for always-on protection.
To solve these challenges, Cisco created stateful firewall clustering with Secure Firewall in AWS.
Firewall clustering for Secure Firewall Threat Defense Virtual provides a highly resilient and reliable architecture for securing your AWS cloud environment. This capability lets you group multiple Secure Firewall Threat Defense Virtual appliances together as a single logical device, known as a “cluster.”
A cluster provides all the conveniences of a single device (management and integration into a network) while taking advantage of the increased throughput and redundancy you would expect from deploying multiple devices individually. Cisco uses Cluster Control Link (CCL) for forwarding asymmetric traffic across devices in the cluster. Clusters can go up to 16 members, and we use VxLAN for CCL.
In this case, clustering has the following roles:
The above diagram explains traffic flow between the client and the server with the insertion of the firewall cluster in the network. Below defines the roles of clustering and how packet flow interacts at each step.
Owner: The Owner is the node in the cluster that initially receives the connection.
Backup Owner: The node that stores TCP/UDP state information received from the Owner so that the connection can be seamlessly transferred to a new owner in case of failure.
Director: The Director is the node in the cluster that handles owner lookup requests from the Forwarder(s).
Forwarder: The Forwarder is a node in the cluster that redirects packets to the Owner.
Fragment Owner: For fragmented packets, cluster nodes that receive a fragment determine a Fragment Owner using a hash of the fragment source IP address, destination IP address, and the packet ID. All fragments are then redirected to the Fragment Owner over Cluster Control Link.
Cisco brought support for AWS Gateway Load Balancer (Figure 2). This feature enables organizations to scale their firewall presence as needed to meet demand (see details here).
Building off the previous figure, organizations can take advantage of the AWS Gateway Load Balancer with Secure Firewall’s clustering capability to evenly distribute traffic at the Secure Firewall cluster. This enables organizations to maximize the benefits of clustering capabilities including increased throughput and redundancy. Figure 3 shows how positioning a Secure Firewall cluster behind the AWS Gateway Load Balancer creates a resilient architecture. Let’s take a closer look at what is going on in the diagram.
Figure 3 shows an Internet user looking to access a workload. Before the user can access the workload, the user’s traffic is routed to Firewall Node 2 for inspection. The traffic flow for this example includes:
User -> IGW -> GWLBe -> GWLB -> Secure Firewall (2) -> GLWB -> GWLBe -> Workload
In the event of failure, the AWS Gateway Load Balancer cuts off existing connections to the failed node, making the above solution non-stateful.
Recently, AWS announced a new feature for their load balancers known as Target Failover for Existing Flows. This feature enables forwarding of existing connections to another target in the event of failure.
Cisco is an early adaptor of this feature and has combined Target Failover for Existing Flows with Secure Firewall clustering capabilities to create the industry’s first stateful cluster in AWS.
Figure 4 shows a firewall failure event and how the AWS Gateway Load Balancer uses the Target Failover for Existing Flows feature to switch the traffic flow from Firewall Node 2 to Firewall Node 3. The traffic flow for this example includes:
User -> IGW -> GWLBe -> GWLB -> Secure Firewall (3) -> GLWB -> GWLBe -> Workload
Organizations need reliable and scalable security to protect always-on applications in their AWS cloud environment. With stateful firewall clustering capabilities from Cisco, organizations can protect their applications while maintaining cloud benefits such as agility, scalability, and reliability.
Cisco Secure Firewall Threat Defense Virtual is available in the AWS marketplace, providing features like firewalling, application visibility & control, IPS, URL filtering, and malware defense. Cisco offers flexible options for firewall licensing, such as pay-as-you-go (PAYG) and bring-your-own-license (BYOL). To learn more about how Cisco Secure Firewall clustering capabilities can help protect your AWS applications, see our additional resources, check out our 30-day free trial, or speak to your Cisco sales representative.
Cisco Secure Firewall Clustering in the Cloud
Introducing AWS Gateway Load Balancer Target Failover for Existing Flows
Secure Firewall for Public Cloud webpage
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We’ve all seen the headlines like “race to the cloud” and “cloud-first.” These articles and publications are true, more and more customers have adopted cloud strategies, but there is more to the story. In these customer conversations, cloud security and network security are often discussed in unison. Why is that?
Customers desire freedom and choice when establishing resilience across every aspect of their business, and this requires both the ability to remain agile, and maintain control of their organization’s most sensitive data. Neither of these can be achieved with just the cloud, or private data center. Organizations are investing in hybrid-multicloud environments to ensure continuity amidst unpredictable threats and change. But these investments will fall short if they do not include security.
The modern enterprise relies on the network more than ever before, and it looks a lot different than it did 10 years ago. According to our 2022 Global Hybrid Cloud Trends Report, where 2,500 global IT leaders were interviewed across 13 countries, 82% said they have adopted hybrid cloud architectures, and 47% of organizations use between two and three public IaaS clouds1. As organizations have grown more dependent on the network, the more complex it has become, making firewall capabilities the most critical element of the hybrid-multicloud security strategy. And Cisco has a firewall capability for every strategy, protecting your most important assets no matter where you choose to deploy it.
In May, Cisco brought offerings from Umbrella and Duo to the AWS Marketplace. Today at AWS Re:Inforce, Cisco Secure announced furthering its partnership with AWS to drive innovation with the goal to protect the integrity of your business. Validating our commitment to hybrid-multicloud security, Cisco has received the AWS Security Competency Partner designation for Network and Infrastructure Security. This designation was awarded through our demonstrated success with customer engagements and rigorous technical validations of Secure Firewall.
This week at AWS Re:Inforce, customers can stop by our booth to see our latest firewall innovation. Cisco Secure Firewall as-a-service on AWS builds on our existing portfolio, giving organizations greater flexibility and choice with a radically simplified SaaS offering. If organizations are truly to embrace security across the multi-environment IT, customers demand simplification without compromising security. With a SaaS-based form factor, management and deployment complexity is reduced. NetOps and SecOps teams will enjoy a simplified security architecture where provisioning of firewalls and control plane infrastructure are managed by Cisco. This will save your teams time by removing the need to rearchitect the network, freeing them to focus on protecting the integrity of your business.
As organizations continue to move more of their day-to-day operations to the cloud, Cisco and AWS are committed to ensure that security is an integral part of their hybrid multi-cloud strategy. We all have seen the impact of security that is bolted on, or too complex. If we are truly to find that balance between agility and protection to ensure business continuity, we need to ensure the same protections we have in the private infrastructure are easily consumed no matter where your data may roam.
Product page: Cisco Secure Firewall for Public Cloud
Partner page: Cisco solutions on AWS
Blog: Securing cloud is everyone’s responsibility
Quick Start page: Cisco solutions on AWS
Amazon Partner Network page: Cisco solutions on AWS
2022 Global Hybrid Cloud Trends Report
1 Henderson, N. & Hanselman, E. (2022, May 25). 2022 Global Hybrid Cloud Trends Report.
S&P Global Market Intelligence, commissioned by Cisco Systems.
https://www.cisco.com/c/en/us/solutions/hybrid-cloud/2022-trends.html ‘
We’d love to hear what you think. Ask a Question, Comment Below, and Stay Connected with Cisco Secure on social!
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