Tag Archive for: cloud network segmentation

Keep it Separate, Keep it Safe: How to Implement and Validate Cloud Network Segmentation

The distributed nature of cloud computing makes it a must-have for business, thanks to on-demand resource availability, network connectivity, and compute scalability.

But the cloud also introduces unique security challenges. First is a rapidly-expanding attack surface: As the number of connected third-party services powered by open-source code and APIs increases, so does the risk of compromise. According to the 2021 IBM Security X-Force Cloud Threat Landscape Report, more than 1,200 of the 2,500 known cloud vulnerabilities had been found within the proceeding 18 months. Additionally, 100 percent of penetration testing efforts by IBM X-Force teams found issues with cloud policies or passwords.

Cloud network segmentation offers a way for companies to reduce the risk of cloud threats. By dividing larger networks into smaller subnets — each of which can be managed individually — businesses can boost protection without sacrificing performance. Here’s how it works.

Why Is Cloud Network Segmentation Valuable to Network Security?

Cloud segmentation is part of larger defense-in-depth (DiD) security practices that look to lower total risk by creating multi-layered frameworks which help protect key data from compromise. DiD is built on the concept that there’s no such thing as a “perfect” security solution — since, with enough time and patience, attackers can compromise any protective process. By layering multiple security measures onto network access points or data storage locations, however, the effort required for compromise increases exponentially, in turn reducing total risk.

And by breaking larger cloud networks down into smaller subnets, the scale of necessary defense decreases, making it possible for teams to differentiate lower-risk subnets from those that need greater protection. Segmentation offers practical benefits for businesses.

Reduced Complexity

Segmenting larger cloud frameworks into smaller cloud networks allows teams to reduce the overall complexity that comes with managing cloud solutions at scale. Instead of trying to find one policy or process that works for cloud networks end-to-end — without introducing security risks to protected data or limiting users’ ease of access — teams can create purpose-built security policies for each network segment.

Increased Granular Control

Segmentation also offers more granular control over network defenses. For example, teams could choose to deploy next-generation firewall tools, such as those capable of discovering and analyzing specific user behaviors, or implement runtime application self-protection (RASP) functions on a case-by-case basis.

Improved Responsiveness

Smaller subnets additionally make it possible for IT professionals to identify and respond to security issues quickly. Here’s why: Given the geographically disparate nature of cloud services — one provider might house their servers locally, while another might be states or countries away — tracking down the root cause of detected issues becomes like finding a digital needle in a virtual haystack. While it’s possible using advanced detection tools and techniques, it could take days or weeks. Segmentation, meanwhile, allows teams to identify and respond to issues on a segment-by-segment basis quickly.

Enhanced Operations

Network segmentation also helps companies enhance operations by aligning with cloud security best practices such as zero trust. Under a zero trust model, user identity is never assumed; instead, it must be proven and verified through authentication. Segmentation makes it possible to apply zero trust where necessary — such as gaining access to network segments that store personally identifiable information (PII) or intellectual property (IP) — in turn helping streamline cloud access without introducing security risk.

How to Implement Network Segmentation

Network segmentation isn’t a new concept — companies have been leveraging physical segmentation of networks for years to reduce the impacts of a potential breach. As the name implies, this type of segmentation uses physical controls such as firewalls to create separate subnets and control traffic flows.

Cloud segmentation, meanwhile, comes with a bigger challenge: Creating network segments across digital environments that may be separated by substantial physical distance. As a result, cloud segmentation was often deemed too complex to work since the sheer amount of unique cloud services, solutions, and environments combined with the dynamic nature of cloud resources meant it was impossible to effectively portion out and protect these subnets.

With the right strategy, however, it’s possible for businesses to both segment and secure their cloud networks. Here, logical rather than physical segmentation is vital. Using either virtual local area networks (VLANs) or more in-depth network addressing schemes, IT teams can create logical subnetworks across cloud services that behave as if they’re physically separate, in turn increasing overall defense.

Worth noting? Validation of these virtual networks is critical to ensure protective measures are working as intended. In practice, this means deploying tools and technologies that make it possible to visualize access across all network environments — local or otherwise — to understand network topology and explore traffic paths. Validation also requires the identification and remediation of issues as they arise. Consider a subnet that includes multiple cloud services. If even one of these services contains vulnerabilities to threats such as Log4j, the entire subnetwork could be at risk. Regular vulnerability scanning paired with active threat identification and remediation is critical to ensure segmentation delivers effective security.

Closing the Cloud Security Gap with RedSeal

Cloud solutions offer the benefit of any time, anywhere access coupled with scalable, on-demand resources. But clouds also introduce unique security challenges around user access, data protection, and security threat monitoring.

As a result, protecting data in the cloud requires a defense-in-depth strategy that creates layers of protection rather than relying on a single service or technology to defend against evolving threats. Cloud network segmentation is one key component in this DiD strategy — by logically segmenting cloud services into smaller and more manageable networks, companies can reduce complexity, increase control and improve responsiveness.

But segmentation alone isn’t enough; enterprises also need the ability to visualize multiple micro-networks at scale, identify potential issues and quickly remediate concerns.

Ready to get started? Discover how RedSeal can help visualize, verify and validate your cloud network segmentation. Watch a Demo.

Why Cloud Network Segmentation Is Critical to Defense-in-Depth (DiD) Security Model

Cloud computing is hotter than ever before. The reason is quite simple: business organizations find it easier to integrate cloud solutions with their ongoing business operations. In addition, cloud solutions are often more cost-effective than deploying in-house servers and developing custom Information Technology (IT) enterprise tools.

According to Markets and Markets, the global cloud computing market is on track to grow from roughly $445 billion in 2021 to $947.3 billion by 2026, at a compound annual growth rate (CAGR) of 16.3%. More organizations are shifting their pivotal business activities to secure cloud networks. And the growth of innovative cloud technologies in the market adds fuel to the fire of worldwide enterprise cloud adoption.

As more organizations continue to migrate their workloads and applications to the cloud, security issues will become more prominent, requiring a dynamic solution that offers secure communication pathways between complex IT environments. Cloud network segmentation and defense in depth (DiD) security model can provide a way forward.

The Cloud Introduces Unique Security Challenges

Despite its growth and promise,  cloud computing poses many unique cybersecurity challenges. In cloud computing, data is stored with a third-party cloud solutions provider and accessed over the internet. This setup limits the visibility and control over data. Along with that, most cloud computing security risks are associated with cloud data security. A 2021 Statista survey reveals that data loss is one of the top cloud security concerns for 64% of the respondents.

On a similar note, the latest survey from Cloud Security Alliance queried 1900 IT and security professionals from a variety of organizations and found that 58% of the respondents are concerned about security in the cloud. Over 10% of the respondents reported cloud security incidents in the past year with security misconfigurations and cyberattacks such as denial of service being the most common causes.

What is Cloud Network Segmentation?

Network Segmentation is a proven network security technique that divides a network into smaller, manageable sub-networks that enable network security teams to compartmentalize the sub-networks. Once the network has been divided into smaller yet easily manageable segments, the security team can deliver high-end security tools and services to each segment.

But the common misconception is that network segmentation cannot work in the ecosystem due to the dynamic nature of clouds. This dynamic nature coupled with the unlimited scalability of the clouds attracts businesses towards cloud computing. But many believe that it has turned more complex to manage. Some believe that segmentation demands rigid policies defined by Internet Protocols (IPs), suitable for on-premises networks, but not for Software-Defined Networking (SDN). In popular opinion, smaller, structured, and secured zones never work in a dynamic environment like cloud networks.

Contrary to popular notions, today, many business organizations are implementing cloud network segmentation to enhance their cloud security and ensure compliance. It proves that network segmentation can be done in clouds, and it doesn’t need to be so rigid.

What is Defense In-Depth Security Model?

Defense-in-Depth (DiD) security model is the latest cybersecurity strategy that devises a multi-layered defensive mechanism to protect your valuable data and information. During an event of a cyberattack, if one defensive mechanism fails, the next one comes forward to prevent the cyberattack. This cybersecurity approach, with deliberate redundancies, identifies various cyberattack vectors and augments the comprehensive security of a system.

DiD is also popularly known as the ‘castle approach’ as it reminds us of the layered guarding of a medieval castle. To successfully infiltrate a castle, you must face many challenging obstacles such as moats, barricades, ramparts, drawbridges, towers, and bastions. Similarly, a hacker or malware must tackle several cybersecurity barriers to launch an attack on a network or an IT system guarded with Defense In-Depth security model.

Digital technology has stirred up the way we live, work and play. Today, almost every enterprise all over the globe is hurrying up to set its foot in the digital world. But, unfortunately, the digital world is highly vulnerable to various types of cyberattacks. On top of that, a single cybersecurity method can’t successfully protect a digital ecosystem from this plethora of cyberattacks. It is where the Defense-in-Depth security model comes into play.

Defense-in-Depth security model–a multi-layered cybersecurity approach–can significantly improve the security of every segment of IT system from a computer to an enterprise’s Wide Area Network (WAN) that accommodates 50,000 users. When an enterprise deploys different lines of defenses such as firewalls, Intrusion Detection (IDS), and Prevention Systems (IPS) together, it can effectively eliminate the vulnerability of relying on a single cybersecurity solution.

How Does Cloud Network Segmentation Support a Defense In-Depth Strategy?

Cloud network segmentation, at its heart, is a Defense-in-Depth cybersecurity approach. It can effectively reduce the risk of data breaches as it wraps layer upon layer of security around IT systems and data. This multi-layered cybersecurity strategy prevents malicious malware from spreading across every network in a business organization. It can also efficiently block hackers from quickly accessing networks and eliminate the possibility of sensitive data from being exposed.

A handful of cloud security solutions providers bring hybrid cloud security solutions like DiD that can precisely meet your business standards, requirements, and goals.

Build a Solid First Line of Defense with RedSeal

In today’s Digital Age, we witness the rising intelligent integration of cloud computing in the enterprise sphere. In this highly competitive scenario, Cloud Network Segmentation and Defense-In-Depth Security Model, without a doubt, boost the performance, security, and reliability of your network.

RedSeal gives a boost to your enterprise’s cyber resilience in a transparent yet straightforward way. We help business organizations boldly face the challenges of escalating cyber complexity and threats. At RedSeal, we help clients understand the intricacies of their network and the risks associated with it.

Visit us to know more about how our cloud security solutions can help you quickly validate your security policies and prioritize issues compromising your most valuable network assets.