Kentik

JANUARY 10, 2022

If you’re a person who works from home, you almost certainly have to deal with occasional internet connection issues. Connect time : Prior to downloading the entire web page, a TCP connection is established between your PC and the application. The use of ICMP vs. TCP or UDP to carry the ping can also be a factor.

IP Address 98

IP Address DNS TCP Application 98

Kentik

JANUARY 24, 2022

Source port for UDP or TCP, 0 for other protocols. Destination port for UDP or TCP, type and code for ICMP, or 0 for other protocols. Looking at NetFlow, IPFIX (Internet Protocol Flow Information Export), or even sFlow (a standardized protocol similar to NetFlow) records today, you will find that most everything runs on port 80 or 443.

Application 96

Application IP Address DNS Port 96

Kentik

JANUARY 13, 2021

Send these pings using the Internet Control Message Protocol (ICMP) or TCP to one or any of the devices you believe to be involved. Ping is a utility that’s available on practically every system, be it a desktop, server, router, or switch. Get the Path with Traceroute. Could it be a misconfiguration issue?

Network 114

Network Networking TCP Protocol 114

CATO Networks

DECEMBER 24, 2019

With more assets in the cloud, branch offices were required to send traffic back to the secure Internet gateway in the datacenter. Furthermore, their ability to extract value out of every bit of capacity became less relevant when with Internet prices offices could have 20x more capacity than they did with MPLS.

WAN 52

WAN Network Networking TCP 52

CATO Networks

JUNE 14, 2023

In most cases, these patterns are evaluated on a single network packet, rather than a sequence of flows between a client host and a server. MAC address in the data link layer of a packet capture Moving up the stack, at the network and transport layers, is a much more granular source of information, the TCP/IP stack.

IoT 52

IoT TCP Protocol Server 52

CATO Networks

MAY 21, 2018

Todays business lives and depends on the Internet. More and more companies rely on the Internet for voice and video. The public Internet, though, is a challenging environment to deliver business-quality real-time services. The public Internet reorganizes to solve issues without regard for the impact on applications.

Internet 40

Internet MPLS WAN Media 40

CATO Networks

JUNE 1, 2020

For example, the trombone effect (the inefficient backhauling of cloud bound traffic through a specific network endpoint) often meant MPLS connectivity to cloud assets was worse than standard Internet connections. As a result, businesses turned to SD-WAN and Internet-based VPN solutions as an alternative. The solution?

Network 52

Network Networking TCP MPLS 52

Kentik

OCTOBER 12, 2021

Once you saw a person’s password to any given application, you knew they were generally using the same one for all of their other applications — email, the ticketing system, the FTP and Novell servers, etc. The Internet Engineering Task Force (IETF) is also working toward changes that will impact pervasive monitoring.

Encryption 84

Encryption DNS IP Address Protocol 84

Kentik

DECEMBER 18, 2019

we never initiate connections to the customers) on servers running Debian GNU/Linux. We tested different designs during an evaluation cycle and we decided to go with LVS/DSR (Linux Virtual Server / Direct Server Return), which is a load-balancing setup traditionally used for website load balancers, but it worked well for BGP connections, too.

Server 13

Server Topology TCP Network 13

CATO Networks

AUGUST 18, 2022

Cato automatically chooses the best route for your traffic dynamically, resulting in a predictable and reliable connection to resources compared with public Internet. Included features like QoS, TCP Acceleration, and Packet Loss Mitigation allow customers to fine-tune performance to their needs.

SASE 52

SASE Cloud Port Firewall 52

Kentik

MAY 2, 2018

In simple terms, Border Gateway Protocol (BGP) is the protocol that routes traffic on the Internet. Each BGP speaking organization is assigned an Autonomous System Number (ASN) that identifies them on the Internet. During last week’s attack, the attacker was redirecting traffic that belonged to Amazon’s Route 53 DNS servers.

IP Address 49

IP Address DNS UDP port Advertising 49

Kentik

SEPTEMBER 20, 2016

For example, using SNMP or flow data to track traffic volume on interfaces, servers, and devices can provide necessary visibility into possible congestion points. In this post we’ll talk about using Kentik’s NPM solution to watch the TCP performance of traffic as reported to Kentik Detect from a Kentik nProbe host agent.

Network 40

Network Networking TCP Server 40

CATO Networks

OCTOBER 30, 2019

We all get the concept: to transmit data over a TCP/IP network like the Internet requires the data be broken down into small packets (usually less than 1500 bytes) containing the relevant application data (payload) and headers. Misconfigured switches, routers, servers, or firewalls can lead to dropped packets. Faulty hardware.

WAN 52

WAN Routers TCP Protocol 52

CATO Networks

SEPTEMBER 11, 2023

Introduction Organizations need to protect themselves from the risks of running their business over the internet and processing sensitive data in the cloud. allow users on the corporate VLAN to access printers located in the printer VLAN, over specific TCP ports. allow IOT devices (e.g.

LAN 52

LAN Cloud Firewall WAN 52

CATO Networks

MARCH 24, 2020

At the beginning of the month, Microsoft released an advisory and security patch for a serious Windows Server Message Block (SMB) vulnerability called the Windows SMBv3 Client/Server Remote Code Execution Vulnerability (AKA Windows SMBv3 RCE or CVE-2020-0796). This would solve the problem for SMB servers but not SMB clients.

SMB 52

SMB Port Server Protocol 52

Kentik

DECEMBER 5, 2016

Next we set Metric (still in the Query pane) to look at the percentage of TCP retransmits. What immediately jumps out from the graph is that there is a significant spike in the percentage of retransmitted TCP packets for these three hosts. Is It One of Our Servers? But was the issue possibly within Kentik’s own infrastructure?

Network 40

Network Networking TCP IP Address 40

CATO Networks

DECEMBER 3, 2019

Virtual Private Networks (VPNs) have become one of the cornerstones of secure communications over the internet. VPNs have become an established method to ensure privacy, protect data, and are becoming very popular among internet users. However, there has been a lot of confusion around what VPNs can and cannot do. Why Use a VPN Tunnel?

VPN 52

VPN Encryption Wide Area Network Protocol 52

Kentik

JUNE 14, 2023

The internet Next, considering we access cloud resources mostly over the public internet, we need to collect data about the state of the internet itself. This allows us to see the internet weather, as it were, which can help us understand why traffic moves the way it does.

WAN 59

WAN Data Centers DNS Internet 59

Confluent

FEBRUARY 21, 2019

The result allows us to have context not only about a process making an external network connection but also about the parent process that initially created the process calling out to the Internet. KSQL server is running and configured to read from the Kafka brokers. The KSQL server processes queries via the Kafka Streams API.

IP Address 83

IP Address Server Application Networking 83

The Network DNA

JUNE 3, 2024

Internal load balancers are typically used for non-internet-facing services that can only be accessible within the virtual network. The key difference is that a public load balancer is assigned a public IP address in the frontend and receives requests via the internet. The requests are routed to endpoints in the backend.

IP Address 52

IP Address Port Protocol Virtual machine 52

CATO Networks

FEBRUARY 26, 2020

However, the dynamic nature of cloud computing, the security challenges posed by mobile users , and IoT (Internet of Things) have blurred the lines that define network perimeters and created new attack surfaces. Secure Web Gateway SWG helps mitigate social engineering attacks like phishing and protects against Internet-borne malware.

Network Security 52

Network Security Network Networking UDP port 52

Confluent

JULY 1, 2019

port 53352 dst 54.191.84.122 port 9092 rank info not available TCP aux info available Connection to ec2-54-191-84-122.us-west-2.compute.amazonaws.com compute.amazonaws.com port 9092 [tcp/XmlIpcRegSvc] succeeded! compute.internal is not resolvable from the internet, it fails. Things are looking good! Since ip-172-31-18-160.us-west-2.compute.internal

Port 101

Port IaaS DNS Network 101

Kentik

NOVEMBER 23, 2015

Just to be sure we’re on the same page, a DoS attack is an attempt to make computing or network resources unavailable for normal usage, such as interrupting a host’s access to the Internet or suspending its services to the Internet. SSDP reflection now accounts over 20% of all volumetric DDoS attacks. Diagnosis by Destination IP.

IP Address 40

IP Address Port Protocol Internet 40

Kentik

MARCH 27, 2017

These datacenters each have multiple BGP Internet peerings to facilitate resilience and performance. Service components and dependencies are spread across datacenters, the cloud, and the Internet, and applications involve increased east-west traffic flows, which makes end-to-end performance heavily reliant on predictable network behavior.

Cloud 40

Cloud Internet Bandwidth Network 40

Kentik

DECEMBER 19, 2016

If the link is congested, then a basic NetFlow tool function allows you to double click on that, and you can see that the link is full because there’s tons of traffic due to the database servers syncing. The link may be almost full, but there may be no TCP retransmits, and the latency may be good. So the data’s coming from the servers.

Network 40

Network Networking Application Server 40

CloudFaire

DECEMBER 9, 2024

The 2024 Cloudflare Radar Year in Review is our fifth annual review of Internet trends and patterns observed throughout the year at both a global and country/region level across a variety of metrics. Key Findings Traffic Global Internet traffic grew 17.2% Google maintained its position as the most popular Internet service overall.

Internet 72

Internet Email IP Address TCP 72