Kentik

FEBRUARY 3, 2022

A peering coordinator is the person responsible for the way an IP network connects to the rest of the internet. Peering” is the term used for interconnections between two IP networks where the two networks provide access to each other’s networks and customers but do not allow traffic to transit to the rest of the internet.

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Port 5G Routers Internet 105

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. Source port for UDP or TCP, 0 for other protocols. Don’t rely on ports.

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Application IP Address DNS Port 96

Packet Pushers

MARCH 8, 2024

Today we metaphorically pop open the hood of switches and routers, taking a look at the mechanics of how they work. We also cover line rate, port-to-port latency, and buffers. Read more » Today we metaphorically pop open the hood of switches and routers, taking a look at the mechanics of how they work.

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Port MPLS Routers Network 52

Juniper

DECEMBER 19, 2024

Official Juniper Networks Blogs The year in review: Delivering simplicity, productivity, reliability, and security with AI-Native Networking The past year at Juniper has been exciting to say the least. Junipers AIOps simplifies network management, empowering IT teams to shift from reactive to proactive management.

Network 83

Network Networking Wide Area Network Data Centers 83

Kentik

MAY 21, 2019

The Mirai botnet was first discovered back in 2016, but has continued to persist and abuse common vulnerabilities and exposures (CVEs) on IoT devices, including home routers and many other network-connected devices. These addresses were apparently port scanning IP addresses that belonged to the company sending the letter.

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Port IP Address Internet Network 81

Kentik

NOVEMBER 17, 2021

Whether it is a Call of Duty update or a Microsoft Patch Tuesday , these OTT traffic events can put a lot of load on a network and understanding them is necessary to keep a network operating at an optimal level. Learn more about the application of Kentik for network business analytics here. The spice (and traffic) must flow.

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DNS Port Routers Network 99

Kentik

JUNE 7, 2023

Enterprises migrate to multi-cloud networks not because they want to, but because they have to. Two exciting new capabilities help you quickly answer any question about your multi-cloud network: Kentik Cloud users can now collect, analyze, and visualize flow logs generated on AWS Transit Gateways. There’s an acquisition.

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Cloud Gateway Port IP Address 97

DCNN Magazine

JANUARY 8, 2025

Juniper Networks , a provider of secure, AI-native networking, has today announced a landmark project with the Netherlands Institute for Radio Astronomy, ASTRON, to upgrade its core, access, WLAN and WAN network infrastructure, supporting the development of its LOFAR 2.0 (Low Low Frequency Array) upgraded telescope.

Network 52

Network Networking Bandwidth Routers 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

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Port Routers Firewall Server 52

Kentik

NOVEMBER 7, 2021

But, we also learned something else: When there is a network problem, we have to figure it out ourselves, which is less awesome. Leading up to SaaS offerings, everything we communicated with over the network to do our jobs (other than surf the web and send email) was hosted on-premises. I mean, no one sees me from the waist down.”.

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Routers Internet Application Server 104

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.

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VPN Network Networking Gateway 69

Kentik

MARCH 6, 2019

Understanding the network footprint of applications and services is now essential for delivering fast and reliable services in cloud-native environments. Networking is not evaporating into the cloud but instead has become a critical component that underpins every part of modern application architecture. A Refresh: Kubernetes Basics.

Network 63

Network Networking Application Cloud 63

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?

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Network Networking Server Port 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?

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Routers IP Address Protocol Topology 52

Kentik

JANUARY 29, 2020

There is a lot of confusion regarding the two primary data sets in network management: SNMP and flow. SNMP is used to collect metadata and metrics about a network device. This critical technology is a basic building block of modeling, measuring, and understanding the network. What is SNMP? When is SNMP Used?

Port 16

Port Network Networking Data Centers 16

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?

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TCP Application Virtual machine Network 110

Kentik

JANUARY 29, 2020

There is a lot of confusion regarding the two primary data sets in network management: SNMP and flow. SNMP is used to collect metadata and metrics about a network device. This critical technology is a basic building block of modeling, measuring, and understanding the network. What is SNMP? When is SNMP Used?

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Port Network Networking Data Centers 78

Kentik

JANUARY 11, 2016

In our recent blog post DDoS Detection: Source Geography NetFlow Analysis we looked at how you can actively explore network traffic with Kentik Detect and discover attacks that you might not otherwise realize are happening. To see that, we go back to the Metrics menu and choose Destination » Port. Conclusion.

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Port Network Networking UDP port 40

The Network DNA

NOVEMBER 26, 2024

Cisco ASA in a Network Configuring DHCP, AAA, and SSH NDNA-ASA(config)# dhcpd address 10.10.10.3-10.10.10.100 Configure address translation using PAT and network objects NDNA-ASA(config)# object network INSIDE-NET NDNA-ASA(config-network-object)# subnet 10.10.10.0 NDNA-ASA(config)# dhcpd option 3 ip 10.10.10.1

Firewall 52

Firewall IP Address VPN Port 52

Network Engineering

DECEMBER 11, 2023

We have a block of static IPs facing the public, and have to have a router which points all the traffic to our router/gateway which points all the traffic to the ISP. Right now, all traffic has a static rule to send all traffic to the ISP gateway on the router at the edge going to the hand off. network subnet 10.113.0.0

VPN 52

VPN Port Protocol WAN 52

Kentik

MARCH 13, 2019

With many attacks stemming from totally unpredictable events like political dissent, employee misconduct, or actions of third parties, every type of organization needs to be prepared to mitigate DDoS attacks and proactively defend their networks to ensure business continuity. Destination port. Source port. Destination Prefix.

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IP Address Port Routers DNS 49

The Network DNA

NOVEMBER 26, 2024

Cisco ASA Firewall in a Network What is Cisco ASA Firewall? Cisco ASA is a security device that includes a firewall, antivirus, intrusion prevention, and a virtual private network (VPN). It enables proactive threat defense, preventing assaults from spreading throughout the network. How to check the show version command ?

Firewall 52

Firewall VPN IP Address Port 52

Kentik

FEBRUARY 8, 2016

For reasons of enforced obfuscation by RFC writers, routes are also called Network Layer Reachability Information (NLRI). Another foundational concept is the Autonomous System (AS), which is a way of referring to a network. That network could be yours, or belong to any other enterprise, service provider, or nerd with her own network.

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Advertising Routers Internet Protocol 49

Engineering at Meta

OCTOBER 2, 2024

Instead of simply porting our mobile social apps, we chose React Native as it enabled our teams to iterate and build quickly with robust animation capabilities, great performance, and a shared platform that powers most of the 2D Meta Quest system apps. The most impactful improvement that our teams made was initiating network queries earlier.

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Engineering Application Port JavaScript 135

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.

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NaaS SASE WAN Network 52

Kentik

SEPTEMBER 26, 2016

On May 27 of this year, Gartner Research Director Sanjit Ganguli released a research note titled “Network Performance Monitoring Tools Leave Gaps in Cloud Monitoring.” You’d put a few others — I emphasize “few” because these appliances were and are not cheap — at other major choke points in and out of the network.

Network 40

Network Networking Data Centers Server 40

Kentik

DECEMBER 22, 2016

We really respected their thoroughness and the fact that they are practicing network engineers, so as we’ve come up with cool new gizmos in our product, we’ve asked them to extend their review. Following here, from their latest review, are some excerpts that focus on Kentik NPM, our enhanced network performance monitoring solution.

Network 40

Network Networking Server Port 40

Kentik

SEPTEMBER 11, 2018

Flow-based network monitoring relies on collecting information about packet flows (i.e. a sequence of related packets) as they traverse routers, switches, load balancers, ADCs, network visibility switches, and other devices. Flow-based monitoring provides significant advantages over other network monitoring methods.

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Protocol Ethernet Network Networking 66

Kentik

MARCH 21, 2016

Making Flow Records a Force for Good on Your Network. In fact, the network infrastructure of nearly every business that uses IP networks — which these days is effectively everyone — generates volumes of metadata on an hourly basis. Network metadata has been available for a relatively long time. Analysis (R)evolution.

Network 40

Network Networking IP Address Port 40

Kentik

JUNE 6, 2016

This is where infrastructure visibility paired with network traffic analysis can save the customer experience. Using a network monitoring tool that focuses on infrastructure devices, you can easily identify bandwidth bottlenecks. Combining network details with flow analytics gets you answers for your client. They get it.

Network 40

Network Networking IP Address Bandwidth 40

Kentik

JUNE 30, 2015

We were one of SprintLink’s first BGP customers, and we had dozens of Cisco and Wellfleet routers. What we didn’t have was a way to answer any of the many urgent network utilization questions we faced every day: Where was our users’ traffic was coming from? Where should it plug into the network? Should it be a DS3?

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Routers Port Server Network 40

Kentik

MAY 10, 2018

Modern enterprise networks are becoming more dynamic and complex, which poses significant challenges for today’s information technology leaders. As more workloads move to the cloud and access networks become more open, ensuring security and stability becomes a more demanding task. The Anatomy of a Multi-Tenant Network.

Network 40

Network Networking Engineering Port 40

Juniper

JANUARY 21, 2025

Official Juniper Networks Blogs Terugblik op 2024: Eenvoud, productiviteit, betrouwbaarheid en veiligheid dankzij AI-native netwerken Het afgelopen jaar is op zijn zachtst gezegd een spannend jaar geweest voor Juniper. Naast dit alles was Juniper ook nog eens de eerste die 800G PTX-routers en een QFX-switch op de markt bracht.

Wide Area Network 52

Wide Area Network WAN Routers Ethernet 52

Kentik

NOVEMBER 6, 2017

Anyone who has ever done capacity planning for a network knows of the challenges this role brings. How do you figure out when your links, routers, switches, firewalls, and other network infrastructure are going to run out of capacity? PoP or router group) we have defined in Kentik Detect. Kentik Detect Capacity Analytics.

Network 40

Network Networking Email Routers 40

Kentik

DECEMBER 8, 2016

In networking terms, a “flow” defines a uni-directional set of packets sharing common attributes such as source and destination IP, source and destination ports, IP protocol, and type of service. J-Flow : J-Flow is a flow monitoring implementation from Juniper Networks. Source & dest port. Flow Data Variations.

Protocol 40

Protocol Port Routers Network 40

Kentik

JULY 20, 2018

NetFlow is a protocol that was originally developed by Cisco to help network operators gain a better understanding of their network traffic conditions. Cisco started by providing NetFlow exporter functions in their various network products running Cisco’s IOS software.

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Routers IP Address Protocol Server 40

Kentik

SEPTEMBER 20, 2016

Network Performance Monitoring with Kentik Detect and nProbe. In the era of digital business, network performance is a critical aspect of keeping customers, subscribers, partners, and users happy. It’s up to IT and network engineering groups to address performance, but to do so they need effective ways to measure and monitor.

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Network Networking TCP Server 40