Network Security Best Practices and Products
Top Stories
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Answer
13 Jul 2021
The differences between PAP and CHAP
PAP uses a two-way handshake to authenticate client sessions, while CHAP uses a three-way handshake. Both authentication processes are common, but one is more secure. Continue Reading
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Answer
02 Oct 2020
What does a VPN concentrator do?
As more employees work remotely and VPN use rises, VPN concentrators have become trendy. But what does a VPN concentrator do exactly, and how do you deploy one? Continue Reading
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News
30 Sep 2021
FCC commissioner urges more funding for satellite broadband
FCC Commissioner Nathan Simington said satellite-based wireless broadband should be available in remote areas where fiber isn't an option. Continue Reading
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Answer
28 Sep 2021
CDN vs. cloud computing: What's the difference?
Content delivery networks and cloud computing architectures may appear to serve the same function. But each has a specific role to play when distributing content. Continue Reading
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Answer
27 Sep 2021
Best practices and tools for public cloud monitoring
Public cloud adoption has ramped up in recent years. In these busy environments, certain cloud network monitoring tools can provide IT groups with crucial visibility. Continue Reading
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Tip
24 Sep 2021
Automate network validation for smoother changes
Teams can verify network state before and after network changes to ensure smooth deployment of the changes. Automating those pre- and post-change checks can reduce errors and outages. Continue Reading
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Feature
22 Sep 2021
Ways to speed up white box networking adoption
Most organizations are slow to deploy new techniques, white box networking included. Experts explain why and offer advice on how to speed up adoption across enterprises. Continue Reading
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Tip
21 Sep 2021
A review of Cato Networks' SASE Cloud platform
Cato's SASE Cloud lacks some features and may require customers to replace point products to fully benefit from the platform. But Cato aligns with SASE’s cloud-native vision and is a strong contender in the market. Continue Reading
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Feature
10 Sep 2021
The role of smartNICs in modern enterprise networks
This chapter excerpt from 'Building a Future-Proof Cloud Infrastructure' looks at how smartNICs can support distributed services platforms for both cloud providers and enterprises. Continue Reading
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Feature
10 Sep 2021
How smartNIC architecture supports scalable infrastructure
In this Q&A, author Silvano Gai discusses how smartNICs can benefit enterprises by providing more granular telemetry and supporting distributed cloud infrastructure. Continue Reading
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News
09 Sep 2021
Exium offers 5G network security to IBM EAM
Exium is IBM's latest partner in 5G network security. Enterprises have the option of using Exium's network as a service with the IBM Edge Application Manager. Continue Reading
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Tip
01 Sep 2021
How remote work changes the future of network management
The pandemic ushered in a new normal of hybrid workplaces. What's also new is how network teams manage these remote networks, like using zero-trust security models. Continue Reading
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News
26 Aug 2021
Comcast Business to acquire network service provider Masergy
Masergy could bring needed midsize to large enterprise business to Comcast Business. Masergy, based in Plano, Texas, provides managed SD-WANs, cloud security and UCaaS. Continue Reading
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Feature
26 Aug 2021
CompTIA Cloud+ tips to troubleshoot cloud networks
The CompTIA Cloud+ exam covers a range of topics, including how to secure and troubleshoot cloud networks. Some of the first steps: Start simple, and isolate the problem. Continue Reading
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Feature
23 Aug 2021
Virtualization concepts to study for CCNP and CCIE exams
In this Q&A, author Patrick Gargano discusses the importance of virtualization in networking and offers studying advice for aspiring CCNPs and CCIEs in preparation for the exams. Continue Reading
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Feature
23 Aug 2021
Explore virtualization study topics for CCNP, CCIE exams
Aspiring CCNPs and CCIEs will need to grasp one of networking's most important topics: virtualization. 'Day 7' from Patrick Gargano's '31 Days' explains the subject in detail. Continue Reading
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Tip
16 Aug 2021
How to set up a VLAN for enterprise networks
VLANs can secure and prioritize network traffic. To set up VLANs correctly, teams should understand concepts like VLAN tagging and subnets. Continue Reading
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Tip
11 Aug 2021
A deep dive into Fortinet's SASE platform
Despite its strong security foundation, Fortinet's SASE platform lacks a cloud-native strategy and requires teams to stitch the architecture together. Continue Reading
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Tip
10 Aug 2021
Troubleshooting a DHCP server failure
DHCP errors often result from DHCP server failure, a lack of available IP addresses and network failure. But troubleshooting steps vary depending on the error symptoms and causes. Continue Reading
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Feature
04 Aug 2021
3 delivery models for 5G and MEC
To enhance network capabilities, enterprises will need to consolidate 5G and MEC technologies in the future. Following a deployment model is the first step. Continue Reading
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Tip
04 Aug 2021
Network observability vs. monitoring: What's the difference?
Traditional network monitoring is useful for collecting data about network issues. But network observability can add further insights into network health and end-user experience. Continue Reading
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Feature
30 Jul 2021
Enterprises look to formalize WFH network architecture
As work-from-home programs prove they're here to stay, enterprise network teams are assessing their network designs to ensure adequate support and performance for home offices. Continue Reading
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Feature
29 Jul 2021
5G core network functionality driven by SDN, NFV
To reap the full benefits of 5G, operators are using SDN, NFV and network slicing to build out core network functionality. Continue Reading
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Feature
29 Jul 2021
An introductory overview of 5G network capabilities
In this Q&A, author William Stallings discusses 5G services, such as network slicing and QoS, and other topics covered in his book, '5G Wireless: A Comprehensive Introduction.' Continue Reading
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Quiz
29 Jul 2021
Test your knowledge in this 5G QoS quiz
In this quiz, test your knowledge of network slicing, QoS, and other technologies and practices related to 5G networking. Continue Reading
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Tip
23 Jul 2021
BGP vs. OSPF: When to use each protocol
BGP and OSPF are two of the most common routing protocols. While BGP excels with dynamic routing for large networks, OSPF offers more efficient path choice and convergence speed. Continue Reading
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Feature
23 Jul 2021
AIOps network management requires vendor-buyer teamwork
Before buying AIOps tools, network managers should work closely with vendors to ensure they collect the correct network data and use relevant algorithms. Continue Reading
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Feature
19 Jul 2021
Experts discuss stretched VLAN use cases, MEC and more
In this networking blog roundup, experts give reasons to stretch VLANs, discuss benefits of deploying private MEC with 5G, and differentiate between junior and senior IT engineers. Continue Reading
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Feature
16 Jul 2021
2021 networking trends for a post-pandemic enterprise
In 2020, the pandemic threw the best-laid IT plans into chaos. As enterprises find their footing again, here are four network trends defining the second half of 2021. Continue Reading
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Answer
15 Jul 2021
What is the network edge and how is it different from edge computing?
The network edge is where an enterprise network connects to third-party network services. Edge computing is a distributed architecture that processes data closer to end users. Continue Reading
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Answer
15 Jul 2021
What does the 0.0.0.0 IP address mean and why is it used?
One of a few special-purpose addresses, IP address 0.0.0.0 has several applications in networking. It stands in as a placeholder address, identifies a default route and more. Continue Reading
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Tip
14 Jul 2021
A guide to network lifecycle management
Network pros should follow a network lifecycle to monitor, manage and implement changes in their networks, regardless of whether it's a plan, build and manage framework or PPDIOO. Continue Reading
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Tip
14 Jul 2021
How to use iPerf3 to test network bandwidth
In this in-depth tip, learn how to use iPerf3, a network testing tool to measure throughput and benchmark your WAN links to ensure effectivity. Continue Reading
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Answer
13 Jul 2021
The differences between PAP and CHAP
PAP uses a two-way handshake to authenticate client sessions, while CHAP uses a three-way handshake. Both authentication processes are common, but one is more secure. Continue Reading
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Answer
08 Jul 2021
What's the difference between a MAC address and IP address?
A MAC address and an IP address each identify network devices, but they do the job at different levels. Explore the differences between the two and learn why both are necessary. Continue Reading
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Answer
06 Jul 2021
Static vs. dynamic routing: What is the difference?
Static routing uses preconfigured routes to send traffic to its destination, while dynamic routing uses algorithms to determine the best path. How else do the two methods differ? Continue Reading
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News
01 Jul 2021
Microsoft will host AT&T 5G network on Azure
AT&T will move its 5G services to Microsoft's Azure cloud. The move provides Microsoft with a critical 5G customer while AT&T cuts costs and gains scalability. Continue Reading
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Quiz
30 Jun 2021
12 official practice questions for the CCNA 200-301 exam
These practice questions for CCNA 200-301 lay out what readers need to know about network security and IP routing in the LAN, from 'CCNA 200-301 Official Cert Guide, Volumes 1 and 2.' Continue Reading
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Feature
28 Jun 2021
Five-nines availability: What it really means
Learn what five-nines availability means and discover the steps enterprises should take to make sure network services are fully accessible. Continue Reading
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Feature
25 Jun 2021
How enterprises can close 5 major SASE gaps
Despite five major gaps that hamper SASE implementation, Gartner recommended enterprises should plan their migration timeline and aim to consolidate to a single vendor. Continue Reading
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Tip
24 Jun 2021
How to calculate network bandwidth requirements
Figuring out how to calculate bandwidth requirements is vital to ensuring your network runs smoothly, and it's best to use the correct formula from the beginning. Continue Reading
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News
23 Jun 2021
Aruba adds network auto-fixes to AI Insights
Aruba's self-correct feature in AI Insights automatically fixes problems deemed safe to repair based on customer feedback. Continue Reading
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Answer
22 Jun 2021
How to use two VPN connections at the same time
Network managers and users might opt to set up two VPN connections at the same time, from the same remote device. But that might not be possible -- or safe. Continue Reading
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Feature
17 Jun 2021
3 best practices for network observability
Research shows a correlation with NetOps success and network observability. Following best practices of network observability can facilitate this success. Continue Reading
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News
11 Jun 2021
Cisco DNA Center update tackles customer headaches
The latest DNA Center upgrade simplifies deploying the campus network controller and scaling the platform to handle more endpoints. Cisco plans to release it in mid-June. Continue Reading
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Tip
11 Jun 2021
The pros and cons of Palo Alto Networks' SASE platform
Palo Alto Networks is commonly mentioned in SASE discussions. While the vendor has strong security capabilities, it also brings integration complexities and PoP limitations. Continue Reading
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Tip
11 Jun 2021
The role of automation in SD-WAN
To achieve the benefits of SD-WAN automation -- such as improved QoS, reduction of human error and faster operations -- API integration, machine learning and AIOps are a must. Continue Reading
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Tip
07 Jun 2021
How to pick the best network security service provider
Managed security service providers have different levels of expertise. Be sure to match your organization's security needs with the right network security provider. Continue Reading
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News
04 Jun 2021
Cisco readies portfolio for hybrid cloud, modern data centers
Cisco tackles hybrid cloud complexity with the introduction of the UCS X-Series unified computing system, ThousandEyes integrations and Intersight advancements. Continue Reading
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Feature
04 Jun 2021
Experts say Open RAN deployment is on the rise
Networking experts examined Open RAN revenue surges as the industry shifts toward the open model. Meanwhile, enterprises should consider the long-term benefits of switching vendors. Continue Reading
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News
02 Jun 2021
Microsoft buys ReFirm Labs to bolster IoT firmware security
Microsoft has bought ReFirm Labs in an IoT security play. The company said Refirm's open source-based products would help it address firmware vulnerabilities in IoT devices. Continue Reading
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Tip
02 Jun 2021
5 steps to achieve network infrastructure modernization
All networks may be different, but companies have similar goals when they look to upgrade their network infrastructures. Assessing current designs is just the first step. Continue Reading
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News
27 May 2021
Juniper ships first major Apstra release
Juniper said the latest update to its recently acquired Apstra network automation product sends a message to customers that the company is committed to multi-platform support. Continue Reading
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Tip
26 May 2021
The migration to enterprise network as a service
Enterprise network as a service is becoming a popular consumption model for networking functions. But, as with any emerging technology, it's important to weigh the options carefully. Continue Reading
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Tip
26 May 2021
Enterprise RF spectrum management best practices
Effective spectrum management requires coordination from company departments to follow certain policies before introducing wireless devices to the enterprise. Continue Reading
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Answer
21 May 2021
6 trends in corporate campus networks
Networks are evolving, and that evolution includes enterprise campus networks. Trends like network automation, 5G and machine learning are modernizing campus networks. Continue Reading
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Feature
21 May 2021
Cloud-based network management leads 2021 network investments
A recent ESG survey shows that many enterprises speeding their digital transformation plans are also increasing 2021 network investment, emphasizing cloud-based network management. Continue Reading
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News
20 May 2021
Demand for Cisco products rises during pandemic recovery
Cisco reported higher product demand and sales as massive COVID-19 vaccination efforts in the U.S. led companies to prepare for an economic recovery. Continue Reading
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Feature
18 May 2021
An introduction to Go network programming
This chapter excerpt from 'Network Programming with Go' dives into logging and metrics, while also providing Go code examples and best practices. Continue Reading
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Feature
18 May 2021
Best practices and strategies for logging in Go
Author Adam Woodbeck discusses how network teams can use the Go programming language for logging and metrics. One tip: Log prudently, and use metrics generously. Continue Reading
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Tip
18 May 2021
How to secure your home Wi-Fi network in 7 steps
When securing your home Wi-Fi, update devices regularly, change passwords consistently, turn off unused services and inspect outdoor network equipment. Continue Reading
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News
14 May 2021
Cisco's latest acquisition spree nabs three companies
Cisco's acquisitions, announced this week, would improve event hosting in Webex, boost network speeds for 5G, and enhance its security platform. Deal terms were not released. Continue Reading
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News
12 May 2021
Cisco bolsters CSP portfolio with Sedona Systems acquisition
Cisco's acquisition of Sedona Systems is expected to add significant carrier technology for 5G slicing and routed optical networking. Continue Reading
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Feature
12 May 2021
Top network IT investments include 5G, smartNICs, cloud
Market analysts showed interest in 5G and smartNICs during an ONUG conference panel on enterprise IT investments. And don't forget the seemingly inevitable mention of cloud. Continue Reading
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Tip
11 May 2021
Hybrid network vs. hybrid network infrastructure
Hybrid networks and hybrid network infrastructure blend different kinds of equipment, geographic locations, network ownership and technology disciplines. Continue Reading
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Tip
10 May 2021
Routed optical networking tactic could be game changer
A new routing architecture could help eliminate management and service headaches stemming from routing IP traffic on optical networks. Continue Reading
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Guest Post
07 May 2021
Develop 5G ecosystems for connectivity in the remote work era
Adopting a 5G ecosystem could enable enterprises to better compete in offering edge computing and remote work options without sacrificing connectivity. Continue Reading
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Tip
07 May 2021
How to prepare networks for the return to office
Network teams should evaluate their UC strategies, VPN capacity and even air conditioning requirements as employees start to return to office environments. Continue Reading
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News
04 May 2021
Verizon media group sale brings cash for 5G network
Verizon's sale of the media group, which includes AOL and Yahoo, comes as it deals with a cash crunch and $129 billion in debt. Verizon competes with AT&T and T-Mobile. Continue Reading
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Feature
30 Apr 2021
A glimpse into Python network automation and APIs
This chapter excerpt from 'Mastering Python Networking' dives into the importance of APIs and network state when working with Python network automation and intent-based networking. Continue Reading
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Feature
30 Apr 2021
Advice on intent-based networking and Python automation
In his book, 'Mastering Python Networking,' Eric Chou provides network practitioners with the concepts they need to understand APIs, intent-based networking and automation. Continue Reading
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Tip
30 Apr 2021
5 common SD-WAN challenges and how to prepare for them
SD-WAN technology has its fair share of risk factors, some of which include cost reduction and management. Find out how your IT team can prepare for these challenges. Continue Reading
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Tip
27 Apr 2021
How to set up a home network -- a 7-step guide
From understanding hardware components to managing network performance and security, this guide teaches networking newbies how to set up a home network. Continue Reading
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Tip
26 Apr 2021
Network-as-a-service business model options take shape
As network as a service gains traction, enterprises and service providers must consider multiple deployment models. SD-WAN, SASE, SDN and policy management could all play a role. Continue Reading
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Report
26 Apr 2021
SD-WAN explained: Ultimate guide to SD-WAN architecture
Evaluating SD-WAN architecture can be confusing, especially as the market grows. This guide helps IT pros learn SD-WAN basics, choose the best product and deploy it with confidence. Continue Reading
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Tip
26 Apr 2021
Ansible vs. Terraform vs. Vagrant: What's the difference?
Ansible, Terraform and Vagrant are common infrastructure automation platforms with specific use cases, benefits and drawbacks. But choosing a platform doesn't need to be confusing. Continue Reading
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Tip
26 Apr 2021
8 remote access security risks and how to prevent them
Enterprises face myriad remote access security concerns, but training and clear communication can help them bolster their security programs for the long term. Continue Reading
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Tip
23 Apr 2021
4 attributes key to network-as-a-service model
For a network-as-a-service model to work for the enterprise, it needs to offer four key attributes: an application-specific, elastic, secure and personalized VPN. Continue Reading
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Tip
22 Apr 2021
Wi-Fi 6 vs. Wi-Fi 6E: Spectrum, not hype, is key difference
The extended spectrum of Wi-Fi 6E sounds promising. But, when assessing Wi-Fi 6 vs. Wi-Fi 6E, organizations should pay close attention to radio frequency characteristics. Continue Reading
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Answer
22 Apr 2021
Sometimes I get a message, 'specified port already open.' What does it mean?
Find out what error messages 'the specified port is already open' or 'the specified port is already in use' mean, and learn how to troubleshoot and fix them. Continue Reading
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Tip
20 Apr 2021
Network capacity planning best practices for return to office
As workers grow comfortable enough to return to the office, network teams will need to plan in advance to make sure the network is ready and ensure proper performance. Continue Reading
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News
16 Apr 2021
Aruba product integrations advance its SASE strategy
Aruba's latest SASE-related integrations involve the Silver Peak-based SD-WAN, Threat Defense and the ClearPass Policy Manager. More product integrations are likely. Continue Reading
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Answer
15 Apr 2021
What does a network infrastructure upgrade project involve?
Explore the steps organizations must take to upgrade their network infrastructure, including how to tell if an upgrade is necessary and how to evaluate resources for the project. Continue Reading
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Tip
14 Apr 2021
Wi-Fi 6 rollout requires careful review of network devices
Wi-Fi 6 is just one part of the overall enterprise network. Organizations need to evaluate several network components to ensure a smooth Wi-Fi 6 deployment. Continue Reading
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Feature
12 Apr 2021
How cloud-native networking will transform infrastructure
Cloud-native networking aims to prioritize business needs and enable networks to become more efficient. Learn more about the potential benefits and challenges in this expert Q&A. Continue Reading
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Feature
12 Apr 2021
The role of network observability in distributed systems
Network observability sounds like a new term for an existing practice, but is that the case? This chapter excerpt lays out what observability is and everything you need to know. Continue Reading
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Tip
09 Apr 2021
Common network vulnerabilities and how to prevent them
It's not possible to eliminate all network vulnerabilities, but network teams can implement best practices to limit potential attacks and protect their networks. Continue Reading
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Feature
09 Apr 2021
Understand top SD-WAN advantages and disadvantages
Cost, complexity, security, training, troubleshooting and software bugs are some top SD-WAN challenges. Discover more on the advantages that SD-WAN can usher into an enterprise. Continue Reading
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News
08 Apr 2021
Arista simplifies network management in latest CloudVision
Arista's CloudVision 2021 has better analytics for spotting network congestion and a dashboard for monitoring Microsoft 365, Salesforce, Google Workspace and other applications. Continue Reading
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Tip
08 Apr 2021
SASE options for the branch of one -- work from anywhere
More than ever, enterprises need to support individual employees that make up a branch of one. These setups require reliable connectivity, application performance and security. Continue Reading
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Tip
07 Apr 2021
Modern network infrastructure design taps security, flexibility
As workers return to office settings, organizations may have to update their on-premises network infrastructure design to improve scalability and connectivity. Continue Reading
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News
06 Apr 2021
Verizon, AWS launch mobile edge computing platform
The AWS, Verizon mobile edge computing offering is a managed service that combines private 5G connectivity with AWS Outposts. Continue Reading
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Tip
05 Apr 2021
How cloud-based network monitoring tools expand visibility
Organizations have become even more distributed and virtual in the wake of COVID-19. Cloud-based network monitoring is well suited to keep tabs on network performance. Continue Reading
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Answer
02 Apr 2021
How are network operations center responsibilities changing?
If your network operations center responsibilities haven't changed yet due to evolutions like DevOps and edge computing, they likely will soon. Here's what you need to know. Continue Reading
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Tip
02 Apr 2021
Best practices for VPN traffic monitoring
VPNs are still a critical part of many enterprise remote access strategies. Networks teams that monitor VPN traffic should look at factors like application usage and overhead. Continue Reading
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Tip
01 Apr 2021
5 basic steps for effective cloud network security
In hybrid infrastructures, old network security systems won't work. Enterprises must adopt effective cloud network security strategies to keep their assets safe. Continue Reading
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News
01 Apr 2021
Cisco integrates ThousandEyes with AppDynamics, Catalyst
The latest Cisco ThousandEyes integration adds internet intelligence to the AppDynamics application performance dashboard, a plus for AppOps and NetOps teams in Cisco shops. Continue Reading
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Tip
31 Mar 2021
Top 9 SD-WAN benefits for businesses
Make the case for an SD-WAN implementation, and explore the benefits and main use cases for SD-WAN in enterprises, beyond traditional hybrid WANs. Continue Reading
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News
30 Mar 2021
Cisco network as a service for hybrid clouds on the horizon
Cisco's first network-as-a-service product will deliver hybrid cloud infrastructure. The company plans to start selling the NaaS offering and an all-in-one SASE product this year. Continue Reading
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Feature
29 Mar 2021
Black network engineers juggle building networks, being seen
2020 didn't transform diversity and inclusion in companies, according to some Black network engineers. But diversity in their careers and networks goes beyond hiring practices. Continue Reading
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Tip
29 Mar 2021
Perform a network health check with network testing
Network engineers can use myriad network testing approaches to ensure their networks are efficient and reliable. The key is incorporating them into a regular maintenance cycle. Continue Reading
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Tip
25 Mar 2021
Why 5G will redefine WWAN and SD-WAN
The nexus of 5G, WWAN and SD-WAN promises to usher in an array of custom tools and services for enterprises. Continue Reading