The Network DNA

JUNE 4, 2024

It specifies how data should be packetized, addressed, transmitted, and routed across the network. TCP/IP stack has four layers Application, Transport, Internet, and Network Interface. The OSI Layer Data Link and Physical layer maps to the Network Interface layer of the TCP/IP stack.

TCP 52

TCP Ethernet Protocol LAN 52

Kentik

NOVEMBER 15, 2018

You can create and enable flow logs per ENI (Elastic Network Interface), per subnet or per VPC. These flow logs can be used to analyze and troubleshoot issues within a cloud environment in a few key ways: They’re agentless. This makes integration much easier and cleaner. They include security context. Image source: AWS.

Network Interface 63

Network Interface Cloud TCP Port 63

Engineering at Meta

OCTOBER 15, 2024

FBNIC’s key features include: Network interfaces for up to 4×100/4×50/4×25 GE with SerDes support for up to 56G PAM4 per lane. It can support up to four hosts with complete datapath isolation for each host.The FBNIC driver has been upstreamed (available from v6.11 version 1.2.0,

Networking 117

Networking Network Data Centers Port 117

Kentik

APRIL 6, 2021

Flow logs are generated only from VPCs, subnets, and network interfaces. One way to quickly instrument this change is to configure flow logs on an interface basis. To do so, just navigate to the “EC2 > Network Interfaces” page in the AWS console and search for the string “gateway.”

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Gateway Cloud Networking Network 98

CATO Networks

MAY 23, 2024

Cato Networks is not aware of any malicious exploitation of its ZTNA using this technique. Details of the attack When a VPN client operates, it begins by creating an encrypted version of the original packet received from its virtual network interface.

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VPN Dynamic Host Configuration Protocol IP Address Server 52

The Network DNA

JANUARY 14, 2025

Ethernet is the group of network technologies that are used at layer 1 and layer 2 of the OSI layer. Ethernet at layer 2 provides the physical addressing to the Network Interface Cards in a networking device. Lets try to learn what Ethernet is here in this small article.

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Ethernet IP Address Network Interface Networking 40

Kentik

NOVEMBER 7, 2018

AWS was the first cloud provider to make their VPC Flow Logs available to customers, with the goal of helping their users to troubleshoot connectivity and security issues and make sure that network access rules work as expected. Can be enabled per ENI (Elastic Network Interface), per subnet or per VPC.

Cloud 53

Cloud Network Interface Networking Network 53

Kentik

APRIL 24, 2023

Here’s a ridiculous list for you: Switches Routers Firewalls CASBs IDS/IPS appliances Wireless access points Public clouds Network load balancers Application load balancers Service provider networks 5G networks Data center overlays SD-WAN overlays Container network interfaces Proxies DHCP services IPAM databases …and the list goes on.

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Networking Network DNS Data Centers 52

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.

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Ethernet Server Network Interface Networking 52

Cloudera Blog

FEBRUARY 12, 2024

Private Endpoint There is a network interface with a private IP address created with a private endpoint, and there is a private link service associated with a specific network interface, so that other resources in the private network can access this service through the private network IP address.

DNS 52

DNS IP Address Server Firewall 52

Kentik

JUNE 7, 2023

Flow logs are a valuable source of network traffic information in AWS. They capture detailed metadata about the traffic flowing through various components of your network, such as VPCs, subnets, and network interfaces. AWS Transit Gateways act as a centralized hub for connecting multiple VPCs and on-premises networks.

Cloud 97

Cloud Gateway Port IP Address 97

Kentik

MARCH 6, 2019

Big Cloud Fabric (Big Switch Networks) - is designed to run Kubernetes in private cloud/on-premises environments. CNI-Genie (Huawei) - CNI is short for “Container Network Interface;” this implementation enables Kubernetes to simultaneously have access to different implementations of the Kubernetes network model in runtime.

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Networking Network Application Cloud 63

Kentik

SEPTEMBER 26, 2016

For one, if you’re using an appliance, even a virtual one, you’re assuming that you can connect to and record packets from a network interface of some sort. API calls may be happening between all sorts of components within a cloud that don’t have a distinct “network interface” that an appliance can attach to.

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Networking Network Data Centers Server 40

CATO Networks

DECEMBER 12, 2024

Device identification based on MAC address lookup: A mac address is a unique identifier assigned to a devices network interface card (NIC). These rule-based identifications provide the data required for device fingerprinting based on the device mac address, as explained below.

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IoT Networking Network Network Security 65

Kentik

JANUARY 13, 2021

On a network, configurations are constantly changing. Unfortunately, configuration change accidents can happen that bring down parts of the network. Interface dropping packets. Interface issues caused by misconfigurations, errors, or queue limits lead to network traffic failing to reach its destination.

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Networking Network TCP Protocol 114

Kentik

SEPTEMBER 11, 2018

It is used to record statistical, infrastructure, routing, and other metadata about traffic traversing an sFlow-enabled network device. sFlow can also export metrics derived from time-based sampling of network interfaces or other system statistics.

Protocol 66

Protocol Ethernet Networking Network 66

CATO Networks

SEPTEMBER 28, 2022

Limited Scalability : Appliance-based security solutions, such as network firewalls , are limited by their hardware. A computer only has so much memory and CPU, and a network interface card has a maximum throughput.

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SASE IoT WAN Cloud 52

DoorDash Engineering

NOVEMBER 29, 2022

Hashicorp Terraform # Associate the VGW in our VPN to the DXG resource "aws_dx_gateway_association" "vgw_to_dxg" { dx_gateway_id = aws_dx_gateway.doordash_dxg.id

Data Centers 97

Data Centers Cloud Gateway IP Address 97

Confluent

JULY 1, 2019

For more complex networking, this might be an IP address associated with a given network interface on a machine. which means listening on all interfaces. I’m using the Docker config names—the equivalents if you’re configuring server.properties directly (e.g., on AWS, etc.) The default is 0.0.0.0,

Port 101

Port IaaS Networking DNS 101

CATO Networks

JUNE 14, 2023

Figure 1: Different network protocols for OS identification based on the OSI model Starting from the bottom of the stack, at the data link layer, exists the medium access control (MAC) protocol. Over this protocol, a unique physical identifier, called the MAC address, is allocated to the network interface card (NIC) of each network device.

IoT 52

IoT TCP Protocol Server 52

Kentik

MAY 8, 2023

This is another facet of network resilience. How network flows enter and leave a network Network flows enter and leave a network through network interfaces or routers, which are devices that connect different networks together. Let’s consider the most important concepts.

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Networking Network IP Address TCP 52

CATO Networks

JULY 22, 2017

Enterprise firewalls share all networks, objects, and firewall inspection rules between all functions in the system, and all functions use them for enforcement and inspection. One customer over-utilizing the appliances CPUs, memory, or network interfaces will impact other customers sharing those resources.

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Firewall Cloud Network Interface Network 40

CloudFaire

DECEMBER 30, 2024

To follow along at home, clone a copy of the quiche repository, start a packet capture on the appropriate network interface and then run: cd quiche/h3i SSLKEYLOGFILE="h3i-example.keys" cargo run --example content_length_mismatch In our decrypted capture, we see the expected sequence of handshake, request, response, and then closure.

Protocol 101

Protocol Server Internet TCP 101

Engineering at Meta

NOVEMBER 21, 2022

The quality of the network router switches and network interfaces. The software/driver/firmware stack that needs to be executed to send or receive a network packet (referred to as the open systems interconnection, or OSI). There is a famous saying: “If you can measure it, you can manage it.”

Data Centers 53

Data Centers Server Networking Network 53

CATO Networks

FEBRUARY 4, 2019

As a practical matter, though, you cant fully virtualize a service demarcation; something has to provide the carrier-to-user connection, harmonize practical local network interfaces (like Ethernet) with a carrier service interface, and provide a point of management handoff where SLA enforcement can be monitored by both sides.

5G 52

5G Virtual machine WAN Media 52

Kentik

AUGUST 14, 2017

Classifying Network Interfaces Enhances Engineering and Business Insights. Given that Kentik was founded primarily by network engineers, it’s easy to think of our raison d’etre in terms of addressing the day-to-day challenges of network operations.

IP Address 40

IP Address Routers Networking Network 40

Engineering at Meta

NOVEMBER 21, 2022

Another major challenge we faced was ensuring PTP worked with multi-host NICs – multiple hosts sharing the same physical network interface and therefore a single PHC. However, ptp4l has no knowledge of this and tries to discipline the PHC like there are no other neighbors.

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Protocol Server Unicast Network 57

Network Engineering

JANUARY 23, 2025

I'm learning kernel-bypass networking techniques using DPDK, and I have an AWS Amazon Linux 2023 VM with installed DPDK on it, running the DPDK skeleton basic forwarding sample application. I have my primary AWS ENA network interface for ssh access, and a secondary AWS ENA interface hooked to DPDK using the igb_uio kernel module.

IP Address 52

IP Address Hypervisor Network Interface DNS 52