The Network DNA

JUNE 19, 2024

CCNA: TCP Sequence & Port Number This article can be read as the second part of the previous article CCNA: 3-Way Handshake where we discussed what makes TCP a reliable protocol for transmitting information. Lets discuss the TCP SEQ and Port numbers in this article. These applications are identified using the port numbers.

Port 52

Port TCP Ethernet LAN 52

CloudFaire

JANUARY 3, 2025

Aggregation : MPTCP can aggregate the bandwidth of many network interfaces. For example, in a data center scenario, it's common to use interface bonding. Mobility : On a customer device, a TCP stream is typically broken if the underlying network interface goes away. Improving reliability for mobile clients is a big deal.

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TCP Port Server Advertising 144

Teimouri

SEPTEMBER 5, 2024

Networking is a key component of enterprise virtualization, and as data centers grow, it is imperative to manage network resources effectively and flexibly. There are two main types of bindings that are available with VDS: static and ephemeral.

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Data Centers Port Network Networking 59

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.

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Network Networking Wide Area Network Data Centers 83

The Network DNA

FEBRUARY 21, 2025

It delivers amazing power and more processing to the network device. This effectively extends policy, segmentation, inspection, and security to the top of rack devices, between data-center interconnects, or at the cloud edge. What's different then ? These Smart Switches with the AMD DPUs offer 800G service throughput.

Data Centers 52

Data Centers Port Encryption Firewall 52

Kentik

JANUARY 13, 2021

The Network is the Key. The network is down!” — I’m sure you heard that before. Despite your best efforts as a network engineer, network failures happen, and you have to fix them. Network troubleshooting becomes easier if your network is observable. Network Troubleshooting Defined.

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Network Networking TCP Protocol 114

Kentik

AUGUST 10, 2021

Network operations teams that are struggling to align with a DevOps-centric, multi-cloud future should investigate how the concept of network observability can help them. Defining Network Observability. What is network observability? What is network observability? This convergence isn’t necessarily new.

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Network Networking Cloud DevOps 85

Juniper

FEBRUARY 24, 2025

Official Juniper Networks Blogs Enhanced AI-Native routing for private and service provider WAN: the cornerstone of autonomous networking Junipers latest AI-Native routing solution is the culmination of decades of industry leadership and innovation. Our networking roots run deep. Want to reduce power bills by up to 70%?

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WAN Network Networking Routers 76

Kentik

DECEMBER 15, 2020

The Network is the Key. As we end 2020, networking infrastructure has become even more critical to connect people, applications, and the economy and distributed workforce that make the world go. At the same time, networks and IT infrastructure overall are becoming more diverse, dynamic, and interdependent.

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Network Networking DevOps Application 94

The Network DNA

JULY 16, 2024

A switch forwards the broadcast out all the ports in same VLAN (except the port where broadcast was received). The benefit of this process is, that next time when PC-1 wants to communicate with PC-2, it doesnt need to send a broadcast on the network. All hosts in same VLAN received this ARP request including PC-2. with 0x4a::56.

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Protocol Ethernet IP Address LAN 98

Kentik

JUNE 27, 2023

Kentik customers move workloads to (and from) multiple clouds, integrate existing hybrid applications with new cloud services, migrate to Virtual WAN to secure private network traffic, and make on-premises data and applications redundant to multiple clouds – or cloud data and applications redundant to the data center.

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Cloud Firewall Data Centers Topology 105

NW Kings

JANUARY 4, 2025

Are you looking to kickstart your career as a (network engineer)? In this comprehensive guide, we will (1) explore essential steps and courses you need to take to thrive in networking field by 2025. For freshers without network experience, enrolling in live courses is highly recommended. Many candidates linger on CCNA for years.

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Engineering Network Networking Data Centers 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.

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VPN Network Networking Gateway 69

The Network DNA

JUNE 24, 2024

This table is populated automatically when a switch receives a frame on a port. As a frame is received on a port, its source MAC address is noted. The switch receives the frame from PC-1 that contains the MAC address 80::01 on port 1. Port 1 is configured as a member of VLAN-11. Then PC-1 wants to communicate with PC-2.

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Ethernet Port LAN Protocol 52

CloudFaire

JANUARY 2, 2025

So lets talk about Stream Lives design, and how it leverages the distributed nature of Cloudflares network, rather than centralized locations as many other live services do. Hence, there are two sides to this: ingesting data from broadcasters and delivering encoded content to viewers.

Protocol 98

Protocol Media Port IP Address 98

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. were all hosted in the corporate data center.

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Routers Internet Application Server 104

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

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

The Network DNA

JUNE 17, 2024

Now actual data transfer happens. Lets say HTTP uses port 80 to identify the application at PC-2, PC-1 chooses Port 80 as the destination port and selects a random port 36000 as the source port. The Network DNA CCNA RnS #13: CSMA/CD - The Network DNA CCNA RnS #12 : Ethernet Frame Type & FCS Field!

TCP 52

TCP Ethernet Port LAN 52

CATO Networks

MAY 20, 2020

Since the release of Gartners Market Guide for Zero Trust Network Access (ZTNA) last April, ZTNA has been one of the biggest buzzwords in network security, and for good reason. A policy of zero trust helps enterprises limit exposure to the myriad of threats facing the modern network. But what does that look like in practice?

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Network Security Network Networking UDP port 52

Kentik

SEPTEMBER 23, 2019

Every organization has an automation goal, and it’s no doubt that network automation is not only essential to avoid costly outages, but also helps organizations scale without putting people in the work path. These DevOps tools can typically manage multiple types of infrastructure. Clearly Python is the winner across the board here.

Network 12

Network Networking DevOps Email 12

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.

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Network Networking Data Centers Server 40

CATO Networks

AUGUST 18, 2022

Catos cloud was built from the ground up to provide converged networking and security globally. Each piece of context can typically be used for policy matching across both networking and security capabilities within Catos SASE Cloud. Cato Network Rules are pre-defined to meet common use-cases.

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SASE Cloud Port Bandwidth 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?

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TCP Application Virtual machine Network 110

Kentik

OCTOBER 23, 2018

We highlighted the great value-add that Kentik’s service provider customers can now deliver to their end-customers with real-time network data insights. The “My Kentik” portal is a built-in feature of the Kentik platform that enables curated, self-service network traffic visibility for downstream customers.

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Network Networking Data Centers IaaS 45

CATO Networks

JULY 25, 2023

Security leaders today are facing a number of challenges, including a rise in the number of breaches, a need to accommodate remote work and networking requirements to replace MPLS networks. Point Solutions are Incompatible with the Hybrid Enterprise This new reality requires new networking architectures.

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SASE WAN Data Centers Cloud 52

NW Kings

DECEMBER 16, 2024

The transport layer is a crucial component of the OSI model , serving as the fourth layer in the network architecture. The protocols of transport layer play a significant role in data transmission across the network, ensuring reliable communication between sender and receiver. What are the protocols of Transport Layer?

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Protocol TCP Port Application 40

How Funky

MAY 4, 2020

The tools and constructs (Software Defined Data Center or SDDC) that VMware customers are used to stay the same, so they can just leverage running them in AWS. VMware is helping address this gap by allowing enterprises to migrate workloads into AWS but still leave them in their native VMware format.

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Cloud Data Centers Port Application 52

Kentik

APRIL 18, 2023

A security breach often manifests itself in some sort of performance degradation of services — a slow network, an application that isn’t behaving correctly, or in some scenarios, a complete hard down. Especially when an attacker is interested in covert data exfiltration, a breach may go unnoticed for weeks, months, or even years.

Data Centers 59

Data Centers WAN Advertising Server 59

Juniper

JANUARY 7, 2025

Official Juniper Networks Blogs Esegui la migrazione delle certificazioni Cisco alle certificazioni Juniper con la formazione GRATUITA In qualit di leader IT, ti impegni per ottimizzare la rete in quanto a prestazioni, affidabilit e scalabilit, semplificando al contempo le operazioni e riducendo l’OpEx.

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Wireless Internet Network Networking 52

CATO Networks

SEPTEMBER 11, 2023

Of course, organizations must also protect against East-West threats, to prevent malicious actors from moving within their networks. They often retain a legacy data center firewall for East-West traffic protection, alongside an SSE solution for North-South traffic protection. allow IOT devices (e.g.

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LAN Cloud Firewall WAN 52

Kentik

MARCH 13, 2018

Understand relationships in network traffic data using Kentik Detect’s Sankey diagram visualization. Visualizing network data. We often see network data presented in time-series visualizations — line graphs that indicate how traffic volume varied over time. Seeing steam.

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Data Centers Energy Port Network 40

Kentik

DECEMBER 21, 2017

From telcos like BT and CenturyLink, to financial services such as MasterCard, to tech companies like Amazon, SAP, and more, we asked 30 of our peers one question: What are your 2018 networking predictions? But respondents (hailing from network, data center, and security operations teams) surfaced five main predictions for the year ahead.

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Network Networking WAN Cloud 40

CATO Networks

MARCH 14, 2021

Attack surface noun: The attack surface of an enterprise network environment is the sum of the different points (the attack vectors) where an unauthorized user can try to enter the network to execute a malicious intent, such as stealing data or disrupting operations. Such expansions have grown the attack surface exponentially.

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Digital Transformation Network Security Network Networking 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.

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Network Networking Engineering Port 40

How Funky

JULY 16, 2024

Intel has developed and sold classic Ethernet Network Interface Cards (NICs) for a long time, but many might not be as familiar with their product offerings in the SmartNIC and more advanced NIC categories. In a shared fabric environment, it can be difficult to structure and provision all the access ports with the right queuing and policies.

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Ethernet Server Network Interface Engineering 52

CATO Networks

AUGUST 23, 2022

SASE innovation has always been about the convergence of security and networking capabilities into a cloud service. Its the delivery as a secure networking global cloud service that is so revolutionary. That is a mistake. The core capabilities of SASE are not new. Click here to download and read the report.

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SASE WAN Cloud Network 52