Providing Out-of-Band Connectivity to Mission-Critical IT Resources

3 Gaps That Will Leave IT Teams Scrambling This Winter

Winter is Looming – Wolf Howling

Today’s IT teams must maintain a growing infrastructure of on-prem and cloud solutions. These range from physical routers, out-of-band devices, and firewalls, to Zero Trust Security solutions, micro-segmentation tools, and network automation integrations. Despite an abundance of physical and virtual solutions meant to help keep digital services online, many organizations face an overwhelming number of tasks just to sustain everyday operations. 

With the rising risk of recession, organizations will be forced to cut back on resources including staff, training, and tools. This will only worsen the existing challenges teams face in their efforts to maintain their distributed infrastructure. 

In this blog, we’ll explore three gaps that will leave IT teams scrambling this winter, and show you several practical approaches to cope during recession. 

Gap 1: Lack of staff

IT teams have been historically understaffed, and most people can remember at least one significant tech worker hiring campaign from the past decade. Today’s CIOs may in fact be facing the biggest talent gap since 2008. For example, in the cybersecurity sector alone, the 2021 (ISC)2 Cybersecurity Workforce Study reported that despite adding 700,000 cybersecurity professionals to the workforce in 2021, there’s still a gap of more than 2.7 million workers globally, 377,000 of which are needed in the United States. 

Trained staff are a must for managing an organization’s distributed sites, especially as team silos disappear and workers are required to have a breadth of skills. Business leaders increasingly need people who are proficient in networking and programming, so they can maintain normal operations while progressing their digital transformation initiatives such as hyperautomation. It’s a challenge that often comes down to hiring new talent or increasing the skills of existing employees, and both of these approaches require plenty of time and money. 

This issue will only worsen with the coming recession as companies begin to tighten their belts and slash budgets. Major brands have already shed thousands of workers this year, leaving IT teams to make due with existing staff numbers or even reduced headcounts. In the simplest terms, the coming recession will leave companies much less willing or able to invest in staff. 

Gap 2: Lack of tools to reduce workloads

Today’s infrastructure incorporates solutions from many different vendors, but the problem is these often come with their own unique tools that are meant to serve only a specific function. Managing SD-WAN, SASE, ZTNA, orchestration, and out-of-band solutions means jumping between disparate tools, many of which lack integration with one another. This complexity leaves operational teams stuck in a reactionary break/fix posture trying to climb mountains of never-ending support tickets. 

To address this challenge, many Big Tech companies empower their IT teams through digital transformation initiatives, such as using automation to achieve a proactive approach. But this requires additional investments in upskilling staff and acquiring adequate automation infrastructure/tools. For many organizations, a lack of money and resources makes this difficult during normal economic conditions, and will only become exacerbated with the coming recession. IT teams will continue scrambling with their inflated workloads.

Gap 3: Lack of trust in automation

Automation can greatly reduce the risk of human error (and subsequent outages) by handling simple workloads, such as device provisioning and firmware updates. However, companies that do have the resources to implement automation also recognize its limitations. Automation solutions that aren’t optimized leave IT teams with mundane tasks like managing, scheduling, and restarting bots. But to even reach this level of automation requires training staff who typically don’t have a background in programming or development. 

These teams will be unfamiliar with NetOps/DevOps concepts. In order to develop essential automation practices, these employees will need to learn through trial and error. This is a problem because most organizations lack the proper automation infrastructure and tools that allow their IT teams to recover from mistakes. Operational teams in charge of keeping infrastructure running often fear automation for this exact reason — if they make one error, there’s the potential that it will bring down the network, lead to unhappy customers, and cost them their job. 

 

BlueprintPDF

Close these gaps with the Network Automation Blueprint

You can close these gaps for good using out-of-band, jump boxes, and tools you already have. After years of working directly with tech giants, we’ve created a best practice reference architecture any company can use to automate their network. This Network Automation Blueprint has been proven by global enterprises to increase capabilities and reduce workloads through trustworthy automation.

How SASE Technology Defends Your Network Edge

SASE technology can offer you defense for your network edge

Secure Access Service Edge, or SASE, is a cloud-based service that combines software-defined wide area networking (SD-WAN) with critical network security technologies like CASB, ZTNA, SWG, and FWaaS. SASE technology connects remote, branch office, and edge computing resources directly to web and cloud services, reducing the load on the main firewall while extending enterprise security policies and controls to protect this traffic. In this article, we’ll dive into the specific technology that SASE uses to defend your network edge.

How SASE technology defends your network edge

SASE protects network edge traffic by rolling up an entire network security technology stack into a single, cloud-delivered service. The key security components of a SASE solution include CASB, ZTNA, SWG, and FWaaS.

CASB

A cloud access security broker, or CASB, is a software service that sits between your main enterprise network and your cloud-based infrastructure. A CASB allows you to extend your enterprise security policies to the traffic flowing between your WAN and the cloud so you can ensure consistent protection. A CASB is actually a collection of multiple security technologies, such as:

  • User and Entity Behavior Analytics (UEBA) – Monitors the behavior of users and devices on the network to detect suspicious activity and enforce security policies.
  • Cloud application discovery – Identifies all cloud applications and services in use by the organization and analyzes relative risk levels.
  • Data Loss Prevention (DLP) – Applies data governance policies to prevent the exfiltration of sensitive and proprietary information.
  • Adaptive access control – Uses session context (e.g., originating location, time, behavior) to determine whether to grant access.
  • Malware detection – Scans traffic between the enterprise and the cloud to detect and block viruses and other malware.

ZTNA

Zero trust network access, or ZTNA, connects remote users and devices to enterprise network resources, similar to a VPN. Unlike a VPN, however, ZTNA creates a direct connection to the specific resources requested by the user, rather than granting full access to the network. This prevents remote users from seeing or interacting with any network resources outside of the specific service they’ve explicitly authenticated to.

ZTNA follows the zero trust motto of “never trust, always verify.” It uses technologies like context and role-based identity verification and two-factor authentication (2FA) to prevent unauthorized access. And, since users need to re-authenticate to every enterprise resource, ZTNA is able to prevent malicious actors from discovering valuable systems and data or moving laterally on the enterprise network.

SWG

A secure web gateway, or SWG, is a service that sits between your enterprise network and the public internet. All web-destined traffic passes through the SWG, where enterprise web filtering and application control policies are applied. Traditionally, an SWG is a hardware device that sits in the data center, which means all remote, branch, and edge traffic needs to be backhauled through a single appliance. As part of a SASE solution, an SWG sits in the cloud instead, so remote traffic doesn’t need to pass through the data center. This improves overall network performance, reduces or eliminates bottlenecks, and ensures consistent application of acceptable use policies and application security controls.

FWaaS

Firewall-as-a-Service, or FWaaS, delivers next-generation firewall technology as a cloud-based service. That means remote and cloud-destined traffic can bypass the firewall in your data center, reducing bottlenecks and performance issues. At the same time, FWaaS provides the same level of security and protection as an NGFW, including features like URL filtering, intrusion detection and prevention, and deep packet inspection (DPI). FWaaS gives SASE solutions the ability to protect remote, edge, and cloud-destined traffic with the same policies and controls as the main enterprise network to ensure consistent security and optimal performance.

SASE technology uses CASB, ZTNA, SWG, and FWaaS to defend your network edge. However, you still need a way to direct remote, branch office, and edge traffic to your SASE security stack. That’s where SD-WAN technology comes in.

Accessing SASE technology with SD-WAN

While it’s possible to use standard WAN architectures to connect to SASE technology, the most reliable and efficient way to access SASE is with SD-WAN. SD-WAN uses software abstraction to create a virtual overlay management network on top of your WAN hardware. This virtual management network enables the use of automation and orchestration to manage the remote network traffic.

In a SASE deployment, SD-WAN uses intelligent routing to separate all remote traffic that’s destined for the cloud. Instead of backhauling this traffic through the enterprise firewall, SD-WAN routes it through the SASE technology stack, significantly reducing the load on your data center infrastructure. This improves network and application performance for your entire enterprise without sacrificing security.

SD-WAN solutions may sit on top of traditional WAN infrastructure, or they may replace that hardware entirely, using SD-WAN routers provided by the vendor. However, rather than investing in specialized vendor hardware, an even better approach is to use vendor-neutral network management devices that can host or integrate with every piece of your SASE and SD-WAN technology stack.

For example, the Nodegrid line of vendor-neutral serial consoles and network edge routers are the perfect on-ramp for your SASE solution. Nodegrid can directly host or integrate with third-party SD-WAN solutions like Palo Alto Networks’ Prisma SD-WAN, or you can use ZPE Cloud’s SD-WAN app. Nodegrid also supports seamless integrations with your choice of SASE provider, giving you a unified, centralized SD-WAN and SASE orchestration platform.

SASE learning center:

★   Understanding Key SASE Components & Benefits
★   SASE Implementation: A Step-by-Step Guide for Businesses
★   The SASE Model: Key Use Cases & Benefits

Want to find out more about accessing SASE technology with Nodegrid SD-WAN?

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Creating the Future of Network Automation

The future of network automation will offer more security and adaptability
The future of network management will focus heavily on automation. While many organizations already employ network automation in some form or another, full implementation still lags far behind other areas of IT such as development and infrastructure (server) management.

The current network automation landscape

Currently, network automation focuses on individual tasks and suffers from several limitations that prevent networking teams from using it effectively.

Automating individual network administration workflows

Typical network automation solutions are designed to solve specific challenges by automating individual tasks or workflows. For example, network automation tools, such as Zero Touch Provisioning (ZTP), allow administrators to automatically deploy new device configurations over the network. Automatic device configurations both speed up the provisioning process and decrease the risk of human error.

ZTP automates one individual workflow to solve a specific problem, but it does not eliminate the need for human intervention. Someone still needs to create the configuration script, monitor for deployment errors, and, if necessary, manually troubleshoot failures and other issues. With any network administration workflow, the more a human gets involved in the process, the higher the chances of mistakes, which increases the risk of an outage. Currently, most network solutions don’t allow for enough automation to remove the human element entirely.

Lagging behind infrastructure and software automation

Thanks in part to the popularity of the DevOps methodology, automation has made great leaps forward in the realms of IT infrastructure management, software development, and software testing. For example, technologies like immutable infrastructure and Infrastructure as Code (IaC) make it possible to automate almost every aspect of deploying, managing, scaling, monitoring, and troubleshooting servers and development environments. However, on the networking side of operations, automation is still lagging behind.

There are a few reasons for this delay. First, network architectures still tend to rely on legacy, hardware-based solutions which may not support software-defined networking, immutable principles, or automation paradigms. Second, there’s a network automation skills gap, which means network engineers and administrators don’t have the training or experience needed to work with software-defined networking code and other automation technologies. And third, many network solutions are still closed ecosystems which makes it difficult or impossible to integrate third-party automation and orchestration tools.

The future of network automation will be focused on reducing human intervention, extending virtualization to legacy devices, bridging the network automation skills gap, and eliminating vendor lock-in.

Looking into the future of network automation

In the future, network automation solutions will need to address the above challenges to keep up with the speed, performance, and reliability required for modern business operations. Creating the future of network automation will involve network hyperautomation, legacy modernization, low-code network automation, and vendor agnostic solutions.

Network hyperautomation

Hyperautomation is the practice of automating all (or most) network management workflows to eliminate human intervention. That means every workflow and process needed to achieve a certain outcome is automated, including error correction and other troubleshooting if a particular step fails. Hyperautomation is only achievable with an orchestration platform, which essentially automates your automation. A network orchestration platform gives you a centralized, big-picture overview of your entire network architecture and every automated workflow. This allows you to monitor your hyperautomation processes and, if necessary, manually intervene to fix problems or update workflows. Hyperautomation significantly reduces manual work, which decreases the chances of human error.

Legacy modernization

Obviously, the easiest way to modernize your infrastructure is to simply replace all your legacy hardware with virtualized, cloud-based solutions, but this is unrealistic for most organizations. It’s much less expensive, time-consuming, and disruptive to slowly upgrade your infrastructure over time, but that means you need a way to integrate automated processes with your legacy hardware. A legacy modernization solution (such as ZPE’s Nodegrid Serial Console R-Series) acts as a bridge between your old network hardware and your modern network automation platform.

These solutions directly connect to both your legacy hardware and your upgraded infrastructure, which allows you to manage both from a unified control panel. They also integrate with modern network orchestration platforms, so you can extend automation technology like software-defined networking and hyperautomation playbooks to your legacy devices. This will make it possible to increase your network automation efforts to stay ahead of evolving business requirements and DevOps initiatives.

Low-code network automation

Network automation typically involves software abstraction, which means turning configurations and workflows into software code. Unfortunately, many network administrators and engineers lack programming experience (beyond CLI scripts), which prevents organizations from moving forward with network automation initiatives.

Low-code network automation seeks to bridge the skills gap by reducing the need for manual coding. Low code solutions hide most of the underlying programming behind GUIs (graphical user interfaces) which administrators use to create and manipulate software-defined networking code and automation playbooks. At the same time, engineers who do have programming experience can still access that underlying code to supplement the capabilities of the GUI for more advanced workflows.

Low-code solutions represent a way into the future of network automation for organizations that currently suffer from a lack of resources and expertise. This future is made possible thanks to low code network automation pioneers like Gluware and Anuta ATOM.

Vendor-agnostic solutions

The future of network automation is vendor agnostic (also known as vendor neutral). Current network solutions with closed ecosystems provide some built-in automation capabilities but make it difficult to integrate third-party automation scripts, low code tools, and orchestration platforms. A vendor-agnostic network solution includes open hardware, Linux-based operating systems, and an orchestration platform that supports integrations with your choice of third-party tools and software. Vendor-agnostic solutions make it possible to automate and orchestrate your entire network from one centralized control panel without any gaps in coverage.

Vendor-agnostic platforms also give you the freedom to adopt new network automation solutions without needing to purchase additional proprietary hardware to host them. For instance, AIOps is an emerging technology which uses advanced artificial intelligence algorithms to detect, prevent, and even predict new cybersecurity threats. This network automation technology is better at identifying novel malware and advanced persistent threats than traditional intrusion prevention systems because AI is able to extrapolate and predict new risks based on past data, even if it hasn’t seen that particular attack method before. A vendor-agnostic network platform can host or integrate with third-party AIOps solutions and other cutting edge technology so your organization can stay ahead of the curve.

Creating the future of network automation with ZPE Systems

In the future, network automation will evolve into hyperautomation, legacy devices will be brought under the same management umbrella as modern solutions, low code automation will bridge the skills gap, and vendor-agnostic platforms will make it possible to automate and orchestrate an entire network architecture from one centralized control panel. Luckily, you can create this future now with the help of ZPE Systems.

ZPE’s Nodegrid is a holistic network orchestration platform that helps you overcome network automation challenges with forward-thinking solutions. ZPE Cloud unifies the management of your entire network architecture behind one pane of glass, so you have a complete overview of and control over all your automation. Nodegrid’s vendor-agnostic hardware and software support seamless integrations with your choice of third-party automation workflows, legacy devices, and low-code tools. With Nodegrid, you can accelerate your network automation efforts now and stay ahead of future automation trends.

Network automation learning center:

→   Automating Your Network Operations Does Not Have to Be Difficult
→   Network Automation Best Practices to Implement in 2022
→   The Importance of NetDevOps Automation for Modern Networks

Want to know more about how Nodegrid can create the future of network automation?

Contact ZPE Systems today!

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Data Center Management Best Practices for NetDevOps Transformation

data center management best practices

The goal of NetDevOps is to take the collaborative, highly efficient processes that work so well in DevOps environments and apply them to networking workflows. The result is a fast, tightly integrated pipeline that delivers high-performance software and services. One of the keys to successful NetDevOps transformation is efficient management of data center and colocation infrastructure, using technologies like Infrastructure as Code (IaC), automation, orchestration, and environmental monitoring. Let’s discuss how these data center management best practices contribute to NetDevOps.

Data center management best practices for NetDevOps transformation

These best practices will help you manage your data center infrastructure more efficiently, and they enable the application of DevOps principles and practices.

Infrastructure as Code/Network as Code

Often, one of the biggest bottlenecks in a software development pipeline is resource provisioning. Spinning up new VMs or nodes with manual configurations is time-consuming, leaving developers sitting around waiting for new environments before they can begin working. Infrastructure as Code, or IaC, aims to streamline the provisioning process by turning all infrastructure configurations into software code. IaC configurations are stored in a centralized repository and can be deployed over and over again, which saves time and ensures consistent configurations across systems—like development, test, and production environments.

Network as Code uses the same technology to manage network device configurations, such as routers and switches. Probably the most commonly used Network as Code technology is zero touch provisioning (ZTP), which deploys device configuration files over the network and executes them automatically. This enables efficient and remote deployments and updates of large-scale and hyperscale data center networks.

Turning data center configurations into software code makes it easier to integrate these workflows into a DevOps pipeline. It also ensures that networking and operations teams can provision new infrastructure at the velocity needed for fast-paced DevOps release cycles.  

Vendor-neutral automation

Automation is one of the foundational principles of NetDevOps because it speeds up processes while reducing the risk of human error. In the data center, automation tools and scripts are used for device configurations, network and power load balancing, system backups, vulnerability scanning, and more. The challenge is in ensuring all these automated components are compatible with your data center infrastructure, especially in multi-vendor, hybrid, and hyperscale environments.

That’s why vendor-neutrality is a major data center management best practice. Using vendor-neutral hardware will make it easier to deploy your choice of automation tools without modifying your scripts for each device. Even better, a vendor-neutral DCIM (data center infrastructure management) solution provides a unified interface from which to create and deploy automation tools while being able to dig its hooks into every component of your data center infrastructure.

Orchestration

Even in a vendor-neutral environment, keeping track of all your automation workflows can be challenging. Data center orchestration is sometimes defined as “automating your automation,” because it reduces the need for administrators to manually execute automated scripts and workflows. This makes automation even more efficient and reduces the workload for administrators, giving them more time to work on new technology initiatives that bring more business value.

Orchestration solutions can also react to situations in real-time, often much faster than human beings are capable of. For example, DCIM orchestration can monitor for usage spikes and perform automatic load balancing before a network administrator has even had time to read the alert message. Data center orchestration makes it easier to maintain optimal performance and respond to changing network conditions.

Environmental monitoring

The environmental conditions in a data center can have a huge impact on the performance and lifetime of your equipment. However, if your infrastructure is housed in remote colocation facilities, you may not have staff on-site to physically monitor things like temperature, humidity, and air quality. Data center environmental risks can cause system shutdowns, performance issues, and equipment failure, so you need a virtual presence to detect and mitigate these threats.

Environmental monitoring systems use sensors to collect data on temperature, humidity, power, airflow, and other important conditions in the rack. Administrators receive automatic alerts when conditions exceed optimal levels, so they can act quickly to remediate the problem. In addition, some systems include analytics and automated playbooks that make it even easier to optimize data center performance. Environmental monitoring ensures that administrators can keep data center infrastructure performing optimally to support NetDevOps pipelines and services.

How Nodegrid empowers data center management best practices

The Nodegrid DCIM orchestration solution delivers everything you need to follow data center management best practices and achieve NetDevOps transformation. Nodegrid’s vendor-neutral hardware and software can directly host your choice of Infrastructure as Code and Network as Code scripts and supports integrations with any third-party automation solution. ZPE Cloud provides centralized DCIM orchestration that unifies all your automation behind one pane of glass, with the ability to “say yes” to any vendor’s hardware. Plus, with Nodegrid’s cloud-managed environmental sensors, you can keep your infrastructure running at peak efficiency to power your NetDevOps transformation.

Learn more about data center management:

→   Top Data Center Infrastructure Management (DCIM) Trends of 2022
→   Data Center Modernization Strategy: How to Streamline Your Legacy Environment
→   Why Choose Nodegrid as Your Data Center Orchestration Tool

Want to find out more about how Nodegrid can help you with these data center management best practices?

Contact ZPE Systems today!

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Data Center Colocation Services: Best Practices for Managing Remote Infrastructure

Data center colocation services can help your customers stay secure

The demand for data center colocation services is on the rise, with the industry estimating an increase of 13.35% in 2022. Colocation services are often less expensive than maintaining an on-site data center, allowing you to redirect resources to more exciting and lucrative technology initiatives. However, remote infrastructure can be more challenging to monitor, secure, and troubleshoot. Plus, if you’re not careful, usage-based pricing could cause your budget to spiral out of control. Here’s what to know about the potential challenges and the best practices to implement to avoid common pitfalls.

Data center colocation services: Challenges and solutions

Challenge 1: Visibility

One way that data center colocation services differ from on-premises data centers is that there is often less physical access to and visibility over the infrastructure. Administrators can’t pop in every day to check environmental conditions like temperature and humidity or to verify that nobody has opened the cage without permission or physically tampered with the equipment. This can make it challenging to maintain optimal conditions to extend the life of your equipment and prevent catastrophic failure.

In addition, colocation facilities also follow the shared responsibility model, which means they’re responsible for a certain portion of security, and you’re responsible for the rest. The facility usually has security cameras, electronic door locks, and other security measures in place, but you generally won’t have access to the videos or logs as a customer. That means you need to ensure that you make up the difference with comprehensive monitoring solutions so there are no gaps in your coverage.

Solution 1: Environmental and infrastructure monitoring

Environmental monitoring sensors collect data on conditions in the data center, providing administrators with a virtual presence in remote colocation facilities. The sensors connect to the I/O ports of console servers and other infrastructure management systems, allowing administrators to monitor things like temperature, humidity, and air quality. Often, these systems use pre-set baselines and will trigger automatic alerts when conditions exceed safe levels, making it easier to efficiently monitor remote infrastructure.

Some environmental monitoring systems also include physical tampering sensors, which will alert administrators if someone opens the door to your cage or comes in close proximity to your equipment without prior authorization. This helps to supplement the physical security provided by colocation services and gives you more control over your remote infrastructure.

Challenge 2: Compliance with data privacy regulations

When the infrastructure used to store and process data is no longer managed on-site by in-house staff, it gets much more difficult to stay compliant with strict data privacy regulations. For example, if your organization processes HIPAA data, you need to know exactly who has access to that data, what specific data they access, and why they need access. That also includes access to the infrastructure that stores and processes the data.

If that infrastructure is housed and managed by a third party, as is the case with data center colocation, you need stricter privacy and security controls to maintain compliance.

Solution 2: Zero trust security

The zero trust security methodology is based on the principle of “never trust, always verify.” In the zero trust model, you microsegment your network to facilitate the creation of highly precise security policies and controls. This allows you to control exactly who has access to which resources in your colocation facility.

In addition, the zero trust methodology recommends identity and access management (IAM) solutions with two-factor authentication (2FA) and user and entity behavior analytics (UEBA). These solutions force an account to re-verify its identity and re-establish trust before it can move to different microsegments and access other resources. This both aids in data privacy compliance and limits the lateral movement of compromised accounts, improving the overall security of your remote infrastructure.

Challenge 3: Around-the-clock access to remote infrastructure

Colocation data center infrastructure is managed remotely over the WAN, which requires an internet connection. When administrators manage that infrastructure on the same production network used for data traffic, it’s known as in-band management.

The issue with in-band management is that it relies on the same LAN architecture that’s used in production. That means a misconfiguration or hardware failure that takes the LAN offline will also cut off all management access, making remote troubleshooting impossible. The same issue occurs if there’s a WAN failure or ISP outage.

If administrators can’t troubleshoot and recover the infrastructure remotely, you will need to dispatch a truck roll, which is both expensive and time-consuming. And, the longer that infrastructure is offline, the higher your downtime costs, including lost business and reputation damage.

Solution 3: Out-of-band (OOB) management

Out-of-band (OOB) management uses serial consoles with secondary WAN interfaces to provide an alternative path to remote infrastructure. OOB serial consoles create a dedicated management network that’s separate from the production LAN. This gives you the ability to perform resource-intensive orchestration workflows without negatively impacting production performance.

OOB management also allows administrators to remotely troubleshoot device failures, LAN misconfigurations, and other sources of outages. This reduces your reliance on truck rolls and helps you recover from outages quicker, so you can lower your costs and protect your reputation.

Challenge 4: Colocation bills

The cost of data center colocation services is generally dependent on your power and bandwidth usage as well as the amount of space your equipment takes up. If not managed properly, usage-based pricing can cause your monthly bill to vary dramatically, wreaking havoc on your budget. Many factors lead to usage spikes, such as sudden surges in demand and inefficient power distribution.

Plus, as your business grows and your technology requirements evolve, you may need to scale up the number of devices in your rack. And as you add more computing, storage, and server resources, you also need more management devices (e.g., serial consoles), all of which take up valuable real estate in the data center.

Solution 4: DCIM orchestration, SDN, and all-in-one devices

This particular challenge has multiple solutions, any or all of which can help keep costs in check while enabling easier scaling.

Data center infrastructure management (DCIM) solutions provide a centralized platform from which to monitor and control remote infrastructure. DCIM tools give administrators the ability to monitor power flows and redistribute loads on demand for more efficient power usage. Modern DCIM orchestration solutions also include automation capabilities for optimal power load balancing.

Software-defined networking (SDN) creates a virtual overlay network, dedicated to management and orchestration, that sits on top of the network architecture. This facilitates the use of sophisticated network automation workflows such as intelligent routing, which can automatically redirect traffic to alternative resources when the bandwidth load on your colocation infrastructure is too high. SDN can help you stay within bandwidth usage thresholds at your colocation data center(s), so you can use your services more cost-effectively.

Finally, all-in-one networking devices can help you reduce the number of boxes in your rack, so you use less square footage in the data center. For example, a device like the Nodegrid Serial Console Plus provides out-of-band management access, routing, switching, and network failover in a single box. Plus, it includes 96 managed serial ports in a single 1U rack-mount form factor, reducing the number of management devices required to control large-scale data center deployments.

Want more solutions on how ZPE can help?

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Zero Trust Network Access vs. VPN for Branch and Edge Networking

When comparing zero trust network access vs. VPN, they both have benefits for security, speed, and scalability

Organizations are starting to recognize the benefits of edge computing, which moves data processing resources closer to the sources of data generation and away from the central data center. In addition, businesses are becoming more geographically dispersed, with branch offices, manufacturing facilities, and other remote sites around the world.

While larger remote sites are typically connected to the enterprise network via WAN or SD-WAN, this may not be feasible for smaller branches with fewer staff. Traditionally, VPNs (virtual private networks) are used to create a private connection for remote systems and users. However, a new technology called Zero Trust Network Access improves upon VPNs by providing faster and more secure remote connections.

What is a VPN?

A VPN, or virtual private network, is a service that creates an encrypted connection between a device and a network. In this particular use case, VPNs are used to extend the enterprise network to branch and edge locations. Often, organizations use VPNs as an alternative to installing expensive WAN solutions in very small remote sites. They’re also used to connect sites that are unreachable by traditional network infrastructure, such as offshore oil rigs.

Though VPN traffic is encrypted, there are still security risks. Many VPNs still use single-factor authentication, meaning all you need is a username and password to connect. If a remote user’s account information is stolen, a hacker could easily gain access because they don’t need to provide a second form of identity verification.

In addition, VPNs grant complete access to the enterprise network, trusting remote users and devices just like they were in the main office. That means a malicious actor could use a compromised account or stolen laptop to move laterally around your enterprise network, stealing whatever data they can find.

What is Zero Trust Network Access (ZTNA)?

Zero trust network access, or ZTNA, is another product or service that connects remote users and devices to enterprise network resources. However, instead of creating a tunnel to the enterprise network itself, ZTNA directly connects users to the applications and services they need. Users then need to re-verify their identity and re-establish trust before they access another application.

ZTNA follows the “dark cloud” concept, which prevents remote users from seeing or interacting with any of the data, systems, or applications they aren’t explicitly authenticated to. Microsegmentation is used to create perimeters around each resource with granular, context-based access control policies.

For example, if a branch office employee uses ZTNA to access the shipping system, they can’t see or touch the payroll application unless they authenticate to that specific resource. If the account is behaving suspiciously (logging in at unusual times, accessing resources it doesn’t typically need, etc.) then the account is locked until trust can be re-established. The dark cloud principle prevents malicious actors from discovering valuable resources and moving laterally on the enterprise network.

Comparing zero trust network access vs. VPN for branch and edge networking

Trust

Zero trust network access is more secure than VPNs because it follows the zero trust security model of “never trust, always verify.” Branch and edge accounts are assumed to be untrustworthy until they prove otherwise through repeated identity verification and trustworthy behavior. Remote accounts never have full access to the enterprise network and can only see and interact with the specific resources they’re presently authenticated to.

Authentication

While newer VPNs may allow integrations with third-party MFA (multi-factor authentication) providers like Okta, many organizations are still using single-factor authentication for VPN clients. That makes it much easier for a hacker to use a single set of stolen credentials to gain unrestricted access to the enterprise network. In addition, if a branch employee leaves their VPN session active and their laptop is stolen (for example, because it was in an unsecured building that’s open to the public), the thief can use that session to jump around the network without ever needing to re-verify or re-authenticate.

Performance

VPN connections are notoriously slow. All VPN traffic needs to be backhauled through a centralized concentrator, which creates massive bottlenecks and network latency. ZTNA, on the other hand, connects branch and edge devices directly to the resources they need. If that resource lives on the web or in the cloud, the traffic bypasses the enterprise network entirely, reducing the load and improving performance for everyone.

Scalability

Finally, VPNs are meant to be deployed to individual users on a case-by-case basis. Scaling up is difficult and expensive because you need to purchase licenses and install software for each machine that connects. Also, the more VPN connections, the greater the impact on network performance, and the more VPN concentrator solutions you’ll need to deploy to distribute the load. Gartner predicts that by 2025, 75% of enterprise-generated data will be processed at the edge, so individual VPN solutions won’t be able to keep up.

ZTNA is often delivered on the “as-a-service” model, which means it’s hosted in the cloud and doesn’t require any customer premises equipment (CPE). Licenses are scaled up or down at the click of a button, and there’s no software to install on remote machines. This makes ZTNA the ideal choice for enterprises hoping to expand their global reach or scale up their edge computing capabilities.

Deploying ZTNA for branch and edge networks

Zero trust network access is available as a standalone service, but you can also find it among the cloud-oriented security stack in a Security Service Edge (SSE) solution. SSE combines ZTNA with security technology such as Cloud Access Security Broker (CASB), Secure Web Gateway (SWG), and Firewall-as-a-Service (FWaaS). This suite of cloud security features delivers comprehensive protection for branch and edge networks while reducing the need for remote traffic to pass through the central data center.

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