<img height="1" width="1" style="display:none;" alt="" src="https://px.ads.linkedin.com/collect/?pid=2975524&amp;fmt=gif">
BLOG

Arm Your Critical Apps To Combat Network Security Issues

May 12, 2015

Network security issues are as rampant as ever, but a certain kind of attack is both the most common and the most destructive, and they are DOS and DDOS attacks – also known as Denial Of Service and Distributed Denial Of Service attacks . They are strategies that hackers use to overwhelm your website, take it down, and inject it with malware as it’s restarting.

This rebooting phase is when your network is most susceptible to security issues, but it is exponentially more vulnerable if you don’t have complete network visibility, especially outside of your firewall.

A network TAP placed outside of your firewall gives you insight into what types of attacks hackers are testing on your network. With this knowledge, you have the power to take down your website gracefully and bring it back up yourself rather than letting hackers take complete control.

Plus, should an attacker succeed, you want to be the first person in your organization to know.

Consider leveraging the following applications to bolster your network security. Ensure that they have a complete, uninterrupted flow of traffic data from a strategically placed network TAP.

Next-Generation Firewalls (NGFW)

Next-generation firewalls integrate additional functions beyond a basic firewall, including SSL decryption, advanced blocking technology, application-focused capabilities, and IPS. These protect both hardware and software, and they have a great focus on your application layer. Their issue, though, is that they don’t have any recognition software, so they generally cover application awareness only.

Intrusion Prevention And Detection Systems (IPS and IDS)

IPS is used to identify specific behavioral patterns that typically foreshadow an attack. Should the system discover such a pattern, it would then alert you to take action. Moreover, it’s usually installed in-band and can start blocking attacks on its own if configured to do so.

More data is becoming encrypted, especially with next-gen firewalls, IPS, and other in-line devices. For instance, the use of an S-line box is very popular at banking institutions. It brings in traffic, pushes it through SSL encryption, then through IPS, and back through encryption.

IDS, on the other hand, is normally implemented out-of-band. It is used only to detect issues (as the name would suggest) and alert you.

>> Download now: Learn how to improve your IT security with better threat detection and prevention tool deployment.

 

Web Application Firewalls (WAF)

Firewalls are an important component of your perimeter security. They’re like the bouncers to your bar. But, while bouncers do their best to keep out rowdy visitors, some unwanted company still makes its way in.

Unfortunately, all firewalls are capable of being hacked. You can’t rely on active components. Unlike firewalls and similar devices, though, network TAPs are not hackable. They always tell you the unbiased truth.

Forensics, Packet Capture, And Lawful Intercept

With forensics, data capture, and lawful intercept, data is captured via a recorder. Leveraging a network TAP for these applications and products is paramount. Without complete data, you might as well throw out your forensics and data capture.

Combating network security issues is critical to your organization, from both a reputational and monetary perspective. If you invest in these security applications, you must protect and maximize your investment by arming them with the data they need.

Attackers tend to have the upper hand, but with a strategic approach and sound network design, you stand a better chance of protecting your data and business from network security issues.

Looking to add inline and out-of-band Security solutions to your security deployment, but not sure where to start? Join us for a brief network Design-IT consultation or demo. No obligation - it’s what we love to do!

IT security garland Technology tool deployment

See Everything. Secure Everything.

Contact us now to secure and optimized your network operations

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.

NETWORK MANAGEMENT | THE 101 SERIES