Key Network Services

[Alana Fekety]

Each service is usually provided by a server component running on one or more computers (often a dedicated server computer offering multiple services) and accessed via a network by client components running on other devices. However, the client and server components can both be run on the same machine.

Examples are the Domain Name System (DNS) which translates domain names to Internet Protocol (IP) addresses and the Dynamic Host Configuration Protocol (DHCP) to assign networking configuration information to network hosts. Authentication servers identify and authenticate users, provide user account profiles, and may log usage statistics.

In computer network programming, the application layer is an abstraction layer reserved for communications protocols and methods designed for process-to-process communications across an IP network. Application layer protocols use the underlying transport layer protocols to establish host-to-host connections for network services.

Network services are applications at the network application layer that connect users working in offices, branches, or remote locations to applications and data in a network. These services typically run on servers.

SASE is a network architecture that combines software-defined wide-area network (SD-WAN) capabilities and cloud-native security functions. Organizations can use SASE architecture to provide users with secure connections to applications from any location.

SASE offers a way for users to access critical applications quickly, using Direct Internet Access (DIA). This approach eliminates the need to first backhaul network traffic through a corporate data center to apply traditional security measures.

Users can also access applications securely. The cloud-native security functions in SASE architecture include secure web gateways, cloud-access security brokers, and firewalls. These functions are delivered from the cloud and are provided as one integrated architecture by SASE vendors.

NaaS can replace hardware-centric virtual private networks (VPNs), load balancers, firewall appliances, and Multiprotocol Label Switching (MPLS) connections. As a result, organizations can scale up or down more easily as demand changes, rapidly deploy services, and eliminate some hardware costs.

A CDN is a system of servers and storage. An organization uses it to efficiently share content, applications, rich media, and more with users across an enterprise, including in remote and branch office locations.

A CDN replicates content to the edge of the network, reducing the distance between the content consumer and the location that the content is being served from. The technology helps to reduce network congestion issues and to optimize bandwidth usage.

The accelerated shifts to remote and hybrid work and to the cloud are the trends making the most impact on the access and delivery of network services. The following sections summarize these closely related trends and some of their challenges.

As more organizations are expected to support remote or hybrid work for the long term, and with applications' requiring more bandwidth, it's important for IT professionals to make sure that their network services and infrastructure are up to the task.

That's why many are looking at the NaaS cloud model for operating their network flexibly, reliably, and cost-effectively. NaaS surpasses traditional network infrastructure in its ability to make scaling resources up or down easier, speed service deployment, and support elimination of some hardware costs.

The cloud helps organizations support "anywhere working," a trend that has accelerated considerably during the global health crisis. Expanded remote work has also prompted many organizations to move more of their on-premises applications and workloads to the cloud, to increase agility and resilience.

As part of that reevaluation, many organizations are considering a SASE architecture as a way to gain the connectivity, security, and observability their IT teams need to meet new and evolving demand for network services. This cloud-native architecture can also help them streamline networking and security functions, so that they can reduce IT workloads.

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Have you been able to run any of the HTTP examples? Also, did you move any of your National Instruments folders after doing the uninstall/reinstall. It is possible that library has been moved. If this is the case, doing a repair on your LabVIEW 2016 would allow LabVIEW to reset the path where it looks for that library.

I think there is something strange with my installation now that I uninstalled and reinstalled. For example I don't have an uninstaller at all for the NI software. Both of my installations are not through the 'typical' installers, so maybe that is part of the issue.

Another thing that may be happening is that your port is blocked (either in use for something else or by a Firewall). Note, the default one for the HTTP Client VIs is TCP 80. This document describes how to have everything configured.

I actually can't find the examples that have the HTTP VIs in them, when I look up 'HTTP' in the example broswer I only see one for web services which doesn't appear to use these VIs, and one for asyc calls.

I am also realizing that uninstalling is going to be troublsome without the uninstaller being on my system. Using the method proposed here there are way too many line items, and even if I do go line by line I am sure there will still be things on my system that remain (registry, other installs etc). Do you have any other ideas for how I can do a clean install?

You should be able to just reinstall the software on top of the LabVIEW already on your computer, and the installer will also repair anything currently on the machine that is included in the installer. This would be the only other way to do this without the unstaller on your computer. Do you recall if there is anything, such as a toolkit, that you opted to not install with LabVIEW?

Yeah I tried this route by reinstalling LabVIEW 2016, I also tried by installing LabVIEW 2014 and LabVIEW 2015, but all three of these still throw the same error. The NI Uninstaller also does not show up.

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