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­­A Hybrid Approach Is the Future of MSSPs

June 14, 2016

Beyond the troubling data breach statistics, businesses of all sizes face a serious cyber security issue—a cyber skills shortage and the cost of hiring rare security network experts. The level of difficulty to build an expert in-house security operations center is leading companies across all industries to consider other means of improving cyber security.

One approach is to hire a third-party managed security service provider (MSSP). 

While many organizations fall into the trap of thinking an MSSP can take over all security functions for them, the future belongs to a hybrid model where you partner with your MSSP to ensure you have comprehensive protection and response plans in place.

The Need for a MSSP Liaison

While there are multiple benefits of hiring an MSSP—cost savings, security expertise, and 24/7 customer support to name a few—the added value is only as good as your ability to integrate MSSP functions into your own security operations. What this means is that beyond having your own security team, you need a manager of some sort (whether it’s a CISO or a lower-level head of security) to coordinate functions with the MSSP.

According to IBM’s Senior Manager of Security Services, Michael Sanders, the functions shared between your internal security operations team and an external MSSP include:

  • Rule and device administration
  • Real-time collection and analysis of activities that impact IT security
  • Sweeping for incidents
  • Threat monitoring
  • Threat analysis
  • Incident response management
  • Emergency incident response planning

The actual distribution of security functions will vary depending on the size of your company. A large Fortune 500 company might have the strength of a well-developed in-house security team and need an MSSP for its ability to monitor around the clock. 

How to Guide: Optimizing Network Design in Security ProjectsAn SMB, on the other hand, might need an MSSP more for its expertise in designing a security infrastructure. Regardless of your specific needs, you need a liaison that can ensure your service level agreement (SLA) is being met and that you stay in control of your data

Here’s an example of how you could split up security responsibilities with an MSSP according to Sanders:

MSSP Functions In-House Security Team Functions
Admin support (tool integration and rule administration) Operational governance
Threat monitoring (threat analysis and impact analysis) Analytics and incident reporting
Security intelligence (incident hunting and use case recommendations) Incident response management
Supported appliance/software deployment and management Threat response (advanced event analytics, escalations, incident management)
   Threat triage (investigations)

Visibility and Transparency Are Always Essential to Your MSSP Partnership 

Thinking about your work with an MSSP as a partnership rather than simply outsourcing security means you have flexibility in the SLA. No matter how the functional distribution is planned out, operational transparency between the two sides is essential to realizing true value.

However, even the greatest communication between your in-house security team and your MSSP can be hindered by improper network architecture. Always ensure that your in-line security appliances and out-of-band monitoring devices are connected via proper networks TAPs. With network TAPs in place, you know that you have guaranteed visibility into every bit, byte and packet® of network traffic allowing the security tools to do their job while maintaining 100% network uptime, even when the appliance requires updates or trouble-shooting.

If you want to learn more about how network TAPs should fit into your security strategy, download our free white paper, Optimizing Network Design in Security Projects

 

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Heartbeats Packets Inside the Bypass TAP

If the inline security tool goes off-line, the TAP will bypass the tool and automatically keep the link flowing. The Bypass TAP does this by sending heartbeat packets to the inline security tool. As long as the inline security tool is on-line, the heartbeat packets will be returned to the TAP, and the link traffic will continue to flow through the inline security tool.

If the heartbeat packets are not returned to the TAP (indicating that the inline security tool has gone off-line), the TAP will automatically 'bypass' the inline security tool and keep the link traffic flowing. The TAP also removes the heartbeat packets before sending the network traffic back onto the critical link.

While the TAP is in bypass mode, it continues to send heartbeat packets out to the inline security tool so that once the tool is back on-line, it will begin returning the heartbeat packets back to the TAP indicating that the tool is ready to go back to work. The TAP will then direct the network traffic back through the inline security tool along with the heartbeat packets placing the tool back inline.

Some of you may have noticed a flaw in the logic behind this solution!  You say, “What if the TAP should fail because it is also in-line? Then the link will also fail!” The TAP would now be considered a point of failure. That is a good catch – but in our blog on Bypass vs. Failsafe, I explained that if a TAP were to fail or lose power, it must provide failsafe protection to the link it is attached to. So our network TAP will go into Failsafe mode keeping the link flowing.

Glossary

  1. Single point of failure: a risk to an IT network if one part of the system brings down a larger part of the entire system.

  2. Heartbeat packet: a soft detection technology that monitors the health of inline appliances. Read the heartbeat packet blog here.

  3. Critical link: the connection between two or more network devices or appliances that if the connection fails then the network is disrupted.

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