What Is SD-WAN (Software-Defined WAN)? Definition, Solutions, and Benefits

IT Toolbox

Increasingly used in large network setups, SD-WAN uses web-based tunnels, firewall software, and virtual technologies to connect remote endpoints. The post What Is SD-WAN (Software-Defined WAN)?

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Cloudflare introduces SD-WAN- and firewall-as-a-service offerings

Tech Republic Security

In a bid to replace MPLS circuits and SD-WAN appliances, Cloudflare has introduced Magic WAN and Magic Firewall and partnerships with VMware, Aruba, Digital Realty, CoreSite and EdgeConneX


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Cisco issues firewall, SD-WAN security warnings

Network World

Amongst Cisco’s dump of 27 security advisories today only one was rated as critical – a vulnerability in its Firepower firewall system that could let an attacker bypass authentication and execute arbitrary actions with administrative privileges on a particular device.

IDG Contributor Network: When SD-WAN is more than SD-WAN

Network World

As the SD-WAN market has matured, one thing has become very clear: SD-WAN will not exist on its own. Predominantly, we’re seeing security and SD-WANs merge. Just consider some of the activity: Velocloud recently announced its SD-WAN Security Technology Partner Program to integrate with other security vendor’s products. Masergy bundles SD-WAN (Silver Peak and its own technology) with third-party security services in the cloud.

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IDG Contributor Network: Can SD-WANs meet standards requirements?

Network World

I find SD-WANs to be facing a similar battle. It’s inconceivable to many that an SD-WAN could replace MPLS. At one recent client, a chemical company, the team was looking to transition from MPLS to SD-WAN. The security group, though, could not accept the fact that SD-WANs met the requirements stipulated by CFATS (Chemical Facility Anti-Terrorism Standards) guiding the chemical industry. CFATS professionals assume MPLS and firewalls to be mandated by the standard.

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Cloudflare wants to be your corporate network backbone with centralized management and security

Network World

Magic WAN and Magic Firewall aim to simplify linking sites and datacenters while allowing organizations to better enforce security policies

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IDG Contributor Network: The new branch office SD-WAN model

Network World

Wrapping up an SD-WAN workshop session with a client last week, I reflected on how rapidly the branch office WAN connectivity and management model is changing. Most people agree that SD-WAN can facilitate service chaining, and a selective backhaul model is interesting to many enterprises that want to concentrate next-generation firewall services in larger locations.

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How to buy SASE

Network World

Vendors have been doing backflips trying to cobble together complete SASE offerings, which would include at a minimum software-defined WAN (SD-WAN), secure Web gateway (SWG), cloud access security broker (CASB), firewall-as-a-service (FWaaS) and zero trust network access (ZTNA).

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Fortinet tightens integration of enterprise security, networking controls

Network World

has 300 new features including AI support to help stop network threats more quickly, sandboxing to help fight ransomware threats, and improved SD-WAN , branch, and edge orchestration.

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Cisco warns of critical vulnerability in virtualized network software

Network World

NFVIS is Linux-based infrastructure software designed to help enterprises and service providers to deploy virtualized network functions, such as a virtual router, firewall and WAN acceleration, Cisco stated.

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Cisco patches three critical holes in IOS XE software

Network World

The three critical warnings are part of a big release of 32 security alerts , many of which are IOS XE-related, including firewall, SD-WAN and wireless access vulnerabilities.

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Juniper bolsters wireless security; fights against encrypted malicious threats

Network World

With the new additions, Juniper is looking to buttress its ability to let users secure all traffic traversing the enterprise network via campus, WAN or data center. The moves are part of Juniper's grand Connected Security platform that includes a variety of security products including its next-generation firewalls that promise to protect networked resources across infrastructure and endpoints.

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Cisco warns of two security patches that don’t work, issues 17 new ones for IOS flaws

Network World

The company also announced that two previously issued patches for its RV320 and RV325 Dual Gigabit WAN VPN Routers were “incomplete” and would need to be redone and reissued. Also see What to consider when deploying a next generation firewall. | Cisco has dropped 17 Security advisories describing 19 vulnerabilities in the software that runs most of its routers and switches, IOS and IOS/XE.

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IT pros need to weigh in on that ‘sassy’ security model

Network World

Similarly, a model known as SD-Branch is providing network and security functionality at the WAN edge on a single platform. Both of these trends have contributed to the development by Gartner of a network architecture known as the secure-access service edge or SASE , which “converges network (for example, software-defined WAN) and network security services (such as [secure web gateways], [cloud access security brokers] and firewall as a service).”

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Pandemic Planning - CIO Style

CIO Musings

Is your WAN link to the internet sized for this? Can your firewall/IDS/IPS support more bandwidth? Technology leadership is never easy. During times of crisis planning and mobilization, it is even harder. So take a deep breath, relax, and read on. I think this will help you.

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Technology Short Take 143

Scott Lowe

Michael Kashin explains how he built a DIY (Do It Yourself) SD-WAN using Envoy and Wireguard. I saw this blog post about Curiefense , an open source Envoy extension to add WAF (web application firewall) functionality to Envoy. Welcome to Technology Short Take #143! I have what I think is an interesting list of links to share with you this time around.

North Korean Threat Actors Targeting Healthcare Sector with Maui Ransomware

SecureWorld News

Turn off network device management interfaces such as Telnet, SSH, Winbox, and HTTP for wide area networks (WANs) and secure with strong passwords and encryption when enabled.".

Technology Short Take 143

Scott Lowe

Michael Kashin explains how he built a DIY (Do It Yourself) SD-WAN using Envoy and Wireguard. I saw this blog post about Curiefense , an open source Envoy extension to add WAF (web application firewall) functionality to Envoy. Welcome to Technology Short Take #143! I have what I think is an interesting list of links to share with you this time around.

Product Review: Paessler PRTG Network Monitor


Monitoring of LAN, WAN, VPN, and distributed sites. Information Technology Blog - - Product Review: Paessler PRTG Network Monitor - Information Technology Blog. PRTG Network Monitor from Paessler AG is a powerful network monitoring solution. This network software is not only powerful but also easy to use. PRTG is network software that monitors your entire infrastructure 24 hours a day, 7 days a week, and alerts you to problems before users even realize it.

Technology Short Take #31

Scott Lowe

Greg Ferro examines a potential SDN use case (an OpenFlow use case) in the form of enterprise firewall migrations. He follows that post up with a post examining PCoIP on WAN connections , where he provides some good information on PCoIP and VPNs, WAN accelerators, and protocol tuning. Welcome to Technology Short Take #31, my irregularly published series that takes a look at links, posts, articles, and thoughts from around the web related to core data center technologies.

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SeanDaniel.com [tech]: The Basics of Local DNS for Small Business.

Sean Daniel

Routers by default will hand out their own IP as the DNS Server and proxy DNS out to the WAN configured (usually DHCP but sometimes services like OpenDNS) DNS servers. I cannot move DHCP to the SBSe box as my Netgear router is a dual WAN device that has an auto-fallover setup for multiple ISPs. To eliminate firewall or antivirus issues I have even uninstalled Norton and avg incase they were causing the problem but no joy. SeanDaniel.com [tech].