DoorDash Engineering

NOVEMBER 29, 2022

As DoorDash’s business grows, engineers strive for a better network infrastructure to ensure more third-party services could be integrated into our system while keeping data securely transmitted. The following sections will discuss how our team established network connections with such vendors.

Data Centers 97

Data Centers Cloud Gateway IP Address 97

Packet Pushers

MAY 4, 2021

This Tech Bytes podcast explores the network assurance and verification feature in VMware's vRealize Network Insight network monitoring software. This feature builds a real-time model of your production network by collecting information from switches, routers, firewalls, and other network devices.

Network 52

Network Networking Routers Firewall 52

Kentik

APRIL 4, 2023

When evaluating solutions, whether to internal problems or those of our customers, I like to keep the core metrics fairly simple: will this reduce costs, increase performance, or improve the network’s reliability? It’s often taken for granted by network specialists that there is a trade-off among these three facets. Durability.

Cloud 104

Cloud Network Networking Bandwidth 104

Kentik

MARCH 13, 2023

Whether it’s as simple as ensuring solid connectivity with a SaaS provider or designing a robust, secure, hybrid, and multi-cloud architecture, the enterprise wide area network is all about connecting us to our resources, wherever they are. So what does this mean for today’s enterprise network engineer?

WAN 98

WAN Wide Area Network Topology Internet 98

Packet Pushers

JANUARY 22, 2021

Network Functions Virtualization (NFV) transforms routers, load balancers, firewalls and other network devices into virtual instances that can be service-chained, spun up and down as needed, and are cloud-friendly. Today's Heavy Networking guests want to change your mind.

Network 52

Network Networking Routers Firewall 52

Obkio

APRIL 4, 2023

Learn about Network Device Monitoring to easily monitor performance of firewalls, routers & switches to identify problems like high CPU & bandwidth usage.

Bandwidth 52

Bandwidth Network Networking Routers 52

ByteByteGo

NOVEMBER 23, 2024

Spots are limited, so sign up today How NAT Made the Growth of Internet Possible Network Address Translation (NAT) is the process that has made the growth of the Internet possible. share one router with a single public IP address. When a device wants to access the internet, it sends a request to your router.

IP Address 100

IP Address Routers Internet Server 100

Packet Pushers

JUNE 20, 2022

The same FortiGate NGFW appliance includes networking capabilities including a router, SD-WAN, ZTNA, and a LAN controller. The same FortiGate NGFW appliance includes networking capabilities including a router, SD-WAN, ZTNA, and a LAN controller.

LAN 52

LAN WAN Firewall Routers 52

Network Engineering

NOVEMBER 28, 2016

and everything else on this network From Site A, I can only ping 10.0.3.1. I understand that firewall needs to be able to allow for ping on 10.0.3.0 SITE B Secondly, I'm going to be connecting up a VOIP/SIP network onto this router for Site B. network? Need help here Site B TZ105 x0 Lan 192.168.162.1

VPN 52

VPN LAN Gateway Network 52

Network Engineering

JANUARY 1, 2025

Objectives Install FreeRADIUS on CentOS(steam 9) to perform Cisco device authentication Perform dot1x authentication on all ports of the switch Perform authentication by connecting a laptop to the switch CentOS(203.230.7.2) - Cisco 2960 Switch(203.230.7.254) - Cisco 2800 Series Router(gig0/0 : 203.230.7.1, 255.255.255.0 255.255.255.0

Port 52

Port Routers Firewall Server 52

Kentik

MARCH 19, 2020

When more of the workforce shifts to working remotely, it puts new and different strains on the infrastructure across different parts of the network, especially where VPN gateways connect to the network edge. Kentik provides an easy way to see not only the entire network but also how it’s being used.

VPN 69

VPN Network Networking Gateway 69

CATO Networks

APRIL 25, 2017

Service insertion refers to the adding of networking services, such as firewalls or load balancers, into the forwarding path of traffic. SD-WANs bring SDN principles of service insertion to the wide area network. Finally, spanning tree loops and other network issues can disrupt the network.

WAN 52

WAN Routers Firewall Wide Area Network 52

Kentik

APRIL 3, 2023

Those calls could be for kernel services, network services, accessing the file system, and so on. Therefore, by looking at the interactions between the application and the kernel, we can learn almost everything we want to know about application performance, including local network activity. How does eBPF work?

TCP 110

TCP Application Virtual machine Network 110

Obkio

MAY 1, 2023

Learn about what SNMP monitoring is & how to use it to monitor performance of networking devices like firewalls, routers, switches and wifi access points.

Access Point 52

Access Point Routers Firewall Network 52

Kentik

MAY 8, 2023

Core Concepts Resilience in networking is the ability of a network to withstand and quickly recover from failures or changes in its environment. This includes the ability to: Dynamically adjust to changes in network topology Detect and respond to outages Route around faults in order to maintain connectivity and service levels.

Network 52

Network Networking IP Address TCP 52

NW Kings

JANUARY 7, 2025

Static routes are fundamental components in networking that help direct traffic efficiently from one network segment to another. In this blog, we will explore what static routes are, how they differ from dynamic routes, and how to configure them on routers like Cisco devices. What is the role of static routes in networking?

Routers 52

Routers IP Address Protocol Topology 52

CATO Networks

NOVEMBER 1, 2019

One sticking point has always been the branch network stack: deploying, configuring, managing, and retrieving the router, firewall, WAN optimizer, etc., And everyone struggles with deploying new functionality at all their branches quickly: multi-year phased deployments are not unusual in larger networks.

Cloud 52

Cloud NaaS Network Networking 52

Kentik

AUGUST 28, 2019

Streaming telemetry is no longer an unfamiliar term in the network monitoring realm. Steaming telemetry uses a push-based mechanism with which data can be transmitted automatically and continuously from various remote sources (such as routers, switches, firewalls, etc.) to some centralized platform for storage and analysis.

Network 16

Network Networking Protocol TCP 16

CATO Networks

SEPTEMBER 28, 2017

With stacks of appliances, including firewalls, WAN optimizers, and routers, comes complexity and breeding ground for problems. The sites ended up with dual routers running HSRP (the Hot Standby Router Protocol) to load balance traffic between them. Finally, managing the MPLS and security infrastructure was painful.

MPLS 52

MPLS WAN Cloud Routers 52

Network Engineering

JANUARY 4, 2025

[I'm unsure whether this should be posted on Network Engineering, Server Faults or Android Enthusiasts] We have a hotspot service that connects into MikroTik routers, using the built-in hotspot facility. From a networking point of view, DNS is functional and there are no firewall entries that can restrict the traffic.

Firewall 52

Firewall DNS Gateway Routers 52

Kentik

JANUARY 24, 2022

Back in the 1990s, NetFlow was introduced on Cisco routers as a means to collect information about IP network traffic as it enters or exits an interface. Since then, network flows have been one of the best ways to gain insight into traffic. It’s pretty much impossible to block HTTP and HTTPS ports at the firewall.

Application 96

Application IP Address DNS Port 96

Kentik

MARCH 3, 2020

The most complex point of today’s networks is the edge, where there are more protocols, diverse traffic, and security exposure. The network edge is where Kentik provides the highest value. The bulk of Kentik’s customers use our differentiated platform to help them drive decision making on the edge of the network.

Data Centers 77

Data Centers Routers Firewall Protocol 77

CATO Networks

APRIL 4, 2018

When it comes to the enterprise network, decisions need to be made with cost, performance, security, and future plans in mind. Enterprise networking is moving from traditional hub-and-spoke WAN architectures to infrastructure that must support the migration of critical applications to the cloud.

MPLS 52

MPLS WAN Internet VPN 52

CATO Networks

SEPTEMBER 13, 2017

In short, SD-WAN aims to remove the constraints of legacy connectivity technologies, namely MPLS and the unmanaged public Internet , ushering a new age of flexible, resilient and secure networks. The Cato Cloud: SD-WAN with Backbone Cato Networks converges the entire scope discussed above into a single cloud-based service.

WAN 52

WAN MPLS Network Networking 52

Kentik

MAY 31, 2023

In the first part of this series , I introduced network reliability as a concept foundational to success for IT and business operations. I also pointed out that because of necessary factors like redundancy, the pursuit of reliability will inevitably mean making compromises that affect a network’s cost or performance.

Network 52

Network Networking Cloud Routers 52

CATO Networks

SEPTEMBER 9, 2019

Benefits of cloud-based networking There are a few simple reasons that appliance-based SD-WAN solutions arent good enough for the modern WAN: they become too complex and inefficient at scale and they struggle to meet the demands of cloud and mobile. Youd have one solution for mobile and fixed users, infinitely scalable as all good clouds are.

WAN 52

WAN Cloud Network Networking 52

Router-switch

OCTOBER 27, 2024

Businesses face serious problems from cyber attacks, particularly those fueled by artificial intelligence (AI).

Artificial Intelligence 40

Artificial Intelligence Network Networking Routers 40

CATO Networks

AUGUST 14, 2023

With the transition to the cloud and remote work, some organizations are undervaluing network security. However, network vulnerabilities and threats still require attention. Enterprises should not forgo the core capabilities required to secure the network from security threats.

Network Security 52

Network Security SASE Network Networking 52

CATO Networks

JANUARY 17, 2018

In the light of recent ransomware attack campaigns against Microsoft RDP servers, Cato Research assessed the risk network scanning poses to organizations. What is Network Scanning? Network scanning is a process for identifying active hosts on a network. Whats Services Are Normally Targeted By Network Scanning?

Network 52

Network Networking Server Port 52

Kentik

MAY 29, 2018

Modern networks are made up of a collection of routers, switches, firewalls, and other network elements. From a high-level perspective, network operators engage in network capacity planning to understand some key network metrics: Types of network traffic.

Network 52

Network Networking Bandwidth Data Centers 52

Kentik

APRIL 24, 2023

What do network engineers working in the trenches, slinging packets, untangling coils of fiber, and spending too much time in the hot aisle really want from all their efforts? They want a rock-solid, reliable, stable network that doesn’t keep them awake at night and ensures great application performance. The answer is simple.

Network 52

Network Networking DNS Data Centers 52

CATO Networks

JUNE 23, 2019

The infamous malware that crippled global DNS provider Dyn, French Web host OVH and security journalist Brain Krebs Web site with botnets of infected home routers, baby monitors and other IoT devices is now infecting enterprise network equipment, according to a recent Palo Alto Networks blog and Network Computing article.

IoT 52

IoT WAN Routers IP Address 52

CATO Networks

JANUARY 2, 2022

The networking industry loves a good buzzword as much as any other IT sector. Network-as-a-Service (NaaS) certainly fits that billing. The term has been around for at least a decade has come back in vogue to describe networking purchased on a subscription basis. Gartner identifies the specific attributes of a cloud service.

NaaS 52

NaaS SASE WAN Network 52

CATO Networks

MARCH 5, 2020

As critical business applications migrate to the cloud, and the mobile workforce continues to grow, networking and security solutions need to evolve in order to meet the changing business needs. 1990s – 2000s: MPLS and the Era of Clear Network Boundaries? 1990s – 2000s: MPLS and the Era of Clear Network Boundaries?

MPLS 52

MPLS SASE WAN Network 52

CATO Networks

APRIL 23, 2019

Like many other telecommunications companies that provide networking services, the Canadian national telco company Telus has ambitious goals for network functions virtualization (NFV) and digital transformation. One thing thats lacking is an effective orchestration framework that manages the deployment of the network functions.

Cloud 52

Cloud Firewall Telecommunications Fashion 52

CATO Networks

OCTOBER 30, 2019

Network packets, the protocol data units (PDUs) of the network layer, are often taken for granted by network pros. Routers forward these packets from source to destination and data encapsulation enables the data to traverse the TCP/IP stack. Network monitoring software. Network congestion. Security breaches.

WAN 52

WAN Routers TCP Protocol 52

CATO Networks

MARCH 28, 2018

Finding it difficult to keep up to date with changes in enterprise networking technologies? We have researched hundreds of networking blogs and news websites so you dont have to. Below we have listed the top 15 sites and blogs on the subject of networking and SD-WAN that should be on your reading list. We hear you.

WAN 52

WAN Network Networking Education 52