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The networks category covers networking protocols, data transmission methods, network addressing, and network security. Understanding network fundamentals is crucial for designing, implementing, and managing reliable and secure communication systems.

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NETWORKS

Top 7 Python testing frameworks for networks

Testing is vital to any software development process, including network programming. It helps reduce project costs and provide high-quality code. While it may not be a developer’s favorite part of their work, building tests into the code from the beginning makes it easier to fix bugs. The Python programming language makes the whole process simple. Due to its versatility and many available frameworks, testing can be almost entirely automated. Python for networking is a great choice - read on to find out the top seven Python testing frameworks.
Maciej Manturewicz

Maciej Manturewicz

on Sep 6, 2022
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SOFTWARE DEVELOPMENT
NETWORKS

FPGA in network solutions: benefits and usage examples

Silicon chips are a well-known and traditional resource often used in projects. However, sometimes they can be insufficiently flexible – here, the FPGA comes in. This solution is gaining popularity as FPGAs provide more options for customization. If you are looking for more information about FPGAs, their strengths, and in which types of projects FPGAs will work better than other solutions, this article provides the answers. We also offer examples of how we have used FPGAs in our clients’ projects. A small annotation: to better distinguish FPGAs from silicon chips, the term “silicon solution” is used in the article.
Multiple authors

Multiple authors

on Aug 11, 2022
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NETWORKS
CLOUD

Handling L4/L7 traffic with Envoy proxy — Introducing Envoy

One of the most crucial qualities an experienced developer should have is knowing how to avoid reinventing the wheel. When creating a web application, there are a few common functionalities that you need to provide no matter what your application does or what technology you use. Usually you want your application to at least support: Secure connection (TLS), Authentication, High availability, Load balancing, Circuit breaking, Canary deployments, Observability, Rate limiting. In this blog post, I will tell you about Envoy proxy - a solution which will not only provide you with the functionalities described above but also with many other neat features.
Ignacy Osetek

Ignacy Osetek

on Aug 10, 2022
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NETWORKS
SOFTWARE DEVELOPMENT

Improving ACL’s processing performance with GPU — comparison with VPP

In computer networks, with the development of new methods, some specific and well-known problems, at first small and manageable, in time grow and become much more difficult to solve. Then they require smarter algorithms, better hardware and a lot of computing power.Access Control List (ACL) processing is a great example of this. This problem has been well known in computer networks for several decades. Typically, ACLs were relatively small - a few dozen entries max - and were used for simple network traffic filtering.
Michał Niciejewski

Michał Niciejewski

on Aug 4, 2022
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NETWORKS
CLOUD

Service mesh vs. Kubernetes Ingress — what is the difference?

Service mesh and Ingress are two solutions used in the area of ​​application networking in Kubernetes. In this article you will see what characterizes each of them and understand where the real difference between them is. A service mesh is a kind of special “system” for communication between applications, different components of an application based on microservices architecture, or between various other workloads running in virtual environments, such as Kubernetes. The solution provides a rich set of features in the fields of traffic management, reliability, resilience, security, and observability.
Paweł Parol

Paweł Parol

on Jul 29, 2022
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NETWORKS
CLOUD

What is a service mesh — everything you need to know

A service mesh is an increasingly popular solution in the area of ​​application networking, in Kubernetes and other environments. If you are still not familiar with the concept, in this article you will find everything you need to know before taking a deeper dive. Over the past few years, we have seen a shift away from approaches based on monolithic code when designing software applications. Instead, modern design is based on microservices architecture. At the end of the day, it is about delivering basically the same business logic, not in the form of a large monolith but as a collection of loosely coupled and independently deployable services.
Paweł Parol

Paweł Parol

on Jul 22, 2022
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NETWORKS
CLOUD

Is Network Service Mesh a service mesh?

Service mesh solutions are increasingly becoming an important element of modern applications built on the basis of microservices architecture. But here and there, you can also hear about a project called Network Service Mesh. Is it another variation on the service mesh theme or something completely different? A service mesh is a kind of “network” that connects all microservices within a given application. In fact, it is extra software that acts as an intermediary layer between services and provides a wide range of functions in the fields of security, observability, and traffic management, as well as reliability and resilience.
Multiple authors

Multiple authors

on Jul 21, 2022
Thumbnail of an article about Network ACL processing algorithms — optimizing firewall's performance
NETWORKS
SOFTWARE DEVELOPMENT

Network ACL processing algorithms — optimizing firewall's performance

A firewall is an important component in protecting a network from attacks. It allows configuration of what kind of traffic is allowed inside the network. So in a sense, a firewall is a barrier that can reject all suspicious connections at the very entrance to the network, making potential attacks significantly more difficult. There are many types of firewalls. In this article, we will focus only on simple stateless firewalls that work in the 3rd and 4th layer of the OSI model (L3 + L4 firewalls). Typically, a firewall uses a user-specified access control list (ACL) to decide which packets to let through and which to block.
Michał Niciejewski

Michał Niciejewski

on Jun 1, 2022
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NETWORKS

Software-Defined Networking (SDN) — a gentle introduction

The SDN approach to network architecture has been steadily gaining ground. More and more companies are designing their network infrastructure with this approach in mind. According to Statista, the traffic from SDNs and virtualized network functions in data centers from around the world in 2021 was estimated to have achieved 7.4 zettabytes. The increasing popularity of software-defined networking across a variety of industries shows how important this technology has become for global businesses. This article provides you with the classic definition of software-defined networking technology, then covers a few typical use cases and explains why software-defined networking technology is worth your time.
Karolina Rusinowicz

Karolina Rusinowicz

on May 27, 2022
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NETWORKS

Example use case of network troubleshooting during the VNF lifecycle

This article will guide you through a proposition of an implementation of network monitoring and troubleshooting during the Virtual Network Function (VNF) lifecycle, based on a combination of data gathered from SDN - in our case Tungsten Fabric (TF) - and OpenStack. This article is a promised follow up to our article Network traffic troubleshooting during the VNF lifecycle - aspects of Tungsten Fabric flows. In the case presented in this article, the main challenge with network monitoring and proactive troubleshooting is to identify the root cause of potential flow-related errors before they cause a service outage.
Łukasz Drzewiecki

Łukasz Drzewiecki

on Feb 7, 2022
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