Kentik

NOVEMBER 7, 2021

The mail server, the CRM, the file servers, etc. If we had a connection problem, we’d call over the cubical something like, “Hey Darla, can you see the Skywalker server? While the internet is just a network, the problem is that your company cannot get end-to-end visibility with traditional network monitoring tools.

Routers 104

Routers Internet Application Server 104

CloudFaire

DECEMBER 30, 2024

Internet protocol specifications are instructions designed for engineers to build things. The Internet is central to everyone's lives, and we depend on these implementations. This is essentially Cloudflares front door HTTP requests that come to Cloudflare from the Internet pass through us first. You can read more about HTTP/1.1

Protocol 101

Protocol Server Internet TCP 101

Confluent

JULY 1, 2019

are shown indented in the following list: KAFKA_LISTENERS is a comma-separated list of listeners and the host/IP and port to which Kafka binds to for listening. KAFKA_ADVERTISED_LISTENERS is a comma-separated list of listeners with their host/IP and port. compute.amazonaws.com port 9092 [tcp/XmlIpcRegSvc] succeeded!

Port 101

Port IaaS DNS Networking 101

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. In some cases, network scanners will use port scans and in other cases ping sweeps. As for SQL Servers, it seems like the hunt for databases still exists.

Networking 52

Networking Network Server Port 52

CloudFaire

JANUARY 2, 2025

Ingesting a broadcast Broadcasters generate content in real time, as a series of video and audio frames, and it needs to be transmitted to Cloudflare over the Internet. When the media content arrives at the Cloudflare server servicing the connection, it is first handled by a Spectrum application. Lets start on the ingest side.

Protocol 80

Protocol Media Port IP Address 80

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

The Network DNA

NOVEMBER 26, 2024

NDNA-ASA(config-if)# nameif dmz NDNA-ASA(config-if)# security-level 70 NDNA-ASA(config-if)# no shut Configure static NAT to the DMZ server using a network object NDNA-ASA(config)# object network dmz-server NDNA-ASA(config-network-object)# host 10.10.2.3 10.10.10.100 inside NDNA-ASA(config)# dhcpd dns 112.110.112.5 255.255.255.0

Firewall 52

Firewall IP Address VPN Port 52

CATO Networks

AUGUST 18, 2022

Additionally, policy rules can be further refined based on application context including application (custom applications too), application categories, service, port range, domain name, and more. Go beyond Gartners defined scope for an SSE service that offers full visibility and control of all WAN, internet, and cloud.

SASE 52

SASE Cloud Port Firewall 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

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

CATO Networks

APRIL 6, 2023

This is because datacenter firewalls dont just address the need for secure Internet access, which is the main SSE capability. Secure Access to the Internet SSE needs to secure access to the internet. Most SSE solutions can support moving branch security to the cloud. But only a few can securely cloudify the datacenter firewall.

Firewall 52

Firewall LAN WAN Internet 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

MAY 20, 2024

A couple phenomena of IP usage across the internet add a layer of complexity to correct identifications: Dynamic IP addresses – often used by ISPs to move an IP between customers when it is no longer in use, making it harder to track and block malicious activity effectively. and a legitimate business and economy site – s kygo.in.

IP Address 52

IP Address Server Port SMB 52

Kentik

APRIL 19, 2023

In this post, we will explore the benefits of embedded caching for internet service providers (ISPs) and discuss various strategies for optimizing the deployment of embedded caches in their networks. The CDN and the ISP peers over an IXP, the volume drives port upgrades, and private connections are impossible. What is a CDN?

IP Address 52

IP Address DNS Server Networking 52

Kentik

APRIL 18, 2023

This could encompass packet captures, flow records, server logs, routing advertisements, file access records, etc. We can look at flow records, interface utilization, server logs, and more to see what type of attack we’re experiencing, who it’s affecting, when it started, and so on. However, this is only part of the process.

Data Centers 59

Data Centers WAN Server Engineering 59

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. So next we’ll look at the protocol and destination port # of the traffic.

IP Address 40

IP Address Port Protocol Internet 40

Kentik

JUNE 27, 2016

Because Kentik Detect observes all traffic to and from the network, it can easily identify all of the interactions between the monitored networks and the rest of the Internet. Advanced Big Data style visualizations returned from these queries make it easy to see where the traffic is going and on which ports.

Network Security 40

Network Security Networking Network Protocol 40

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. There’s a sports analogy that says “the most important ability is availability” for systems.

Networking 114

Networking Network TCP Protocol 114

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 Networking Network UDP port 52

Kentik

SEPTEMBER 26, 2016

In those settings, you might drop NPM appliances into major data centers, perhaps directly connected to router or switch span ports, or via a tap or packet broker from the likes of a Gigamon or Ixia. Kentik’s server-side NPM instrumentation goes wherever the servers go, in the data center or in the cloud. routers and switches).

Networking 40

Networking Network Data Centers Server 40

CATO Networks

SEPTEMBER 2, 2021

ZTE Zero Trust Edge (ZTE) is Forresters version of SASE and uses ZTNA to provide a more secure Internet on-ramp for remote sites and workers. SWG Secure Web Gateway (SWG) is designed to protect against Internet-borne threats such as phishing or malware and enforce corporate policies for Internet surfing.

SASE 52

SASE Firewall IP Address VPN 52

Kentik

JUNE 30, 2015

Who’s transferring data with our servers that shouldn’t be? Were our servers talking to each other on weird ports? I was young, I was new to the networking world, and everyone was new to the Internet. I could see all the weird traffic a server was doing that wasn’t expected, and where it was going to.

Routers 40

Routers Port Server IP Address 40

CATO Networks

APRIL 16, 2019

With small branch offices often lax in their security policies, they become a favorite entry port for all too many attackers. A typically large enterprise with 10,000+ servers could have more than one million SSH keys. Network-as-a-Service allows the organization to use internet connections for optimized bandwidth usage.

WAN 52

WAN Networking Network MPLS 52

Kentik

DECEMBER 5, 2016

In the Filters pane, we filtered to show only dest port 179 (BGP). The graph and table in the main display area show us the top three destination network elements (anonymized of course) in terms of 98th percentile of retransmits of traffic using the BGP port. Is It One of Our Servers? Where in the World? Clues from AS Path.

Networking 40

Networking Network TCP IP Address 40

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. As an example, we’ll use traffic from Kentik’s own servers. We were also observing slow response times from applications running on the server. TCP is the key.

Networking 40

Networking TCP Network Server 40

Kentik

APRIL 24, 2017

In this post we’ll take a new look, focusing instead on use cases and bandwidths that are more representative of — and relevant to — large internet edge and datacenter operations. If you’re a hosting, cloud, or Web provider, the types of hosts you’re concerned with are servers, which are each usually pushing traffic at tens to hundreds Mbps.

Protocol 40

Protocol Routers Bandwidth Internet 40

Kentik

OCTOBER 30, 2017

We also looked at this traffic by destination port and saw that in addition to the spikes on port 14999 (aggregation service) we saw a dip on 20012 (ingest) which is a service running on the same node. High number of source IPs talking to a proxy server. High number of source IPs talking to an internal IP.

Port 40

Port DevOps IP Address Networking 40

Kentik

MARCH 13, 2018

To start, we’ll look at a relatively simple example showing traffic measured in bits per second (bps), broken down by source IPs, destination IPs and services (protocol / port). To understand how Sankey diagrams work in Kentik Detect, let’s look at a few examples. Troubleshooting data center congestion.

Data Centers 40

Data Centers Energy Port Networking 40

CATO Networks

NOVEMBER 20, 2019

Every HTTP session has a set of request headers defining the request, and how the server should handle it. Internet browsers usually have a clear and standard headers image. We have also observed known malware samples using proprietary unknown protocols over known ports and such could be flagged using application identification.

Networking 52

Networking Network Protocol IP Address 52

Kentik

NOVEMBER 16, 2015

We heavily leverage Richard Crowley’s excellent go metrics library ( [link] ), which is itself a port of Coda Hale’s and Yammer’s Java language library. Every service is extensively instrumented, along with a whole host of server stats via the invaluable project tcollector. Remember how all of our processes expose a health check port?

Port 40

Port Application Engineering Network 40

Kentik

SEPTEMBER 27, 2021

If you like nerding out on all-things networking, cloud and the internet, this podcast is for you. As a self-proclaimed internet plumber, Avi plays host to top network experts from around the world for in-depth, honest and freewheeling banter on all-things-network. For him, it’s where the door opened beyond the default routes.

Networking 52

Networking Network Internet Engineering 52

Kentik

MAY 17, 2021

Internal communications routed over internet gateways and driving up costs. And it’s not like the network teams had to worry about fixing failed line cards or erroring ports. Fifteen years ago you couldn’t launch a new business or even run a school without having a server, a switch, and a router sitting in a rack somewhere.

Cloud 52

Cloud Networking Network Gateway 52

CloudFaire

JANUARY 21, 2025

This extensive infrastructure and customer base uniquely positions us to provide key insights and trends that benefit the wider Internet community. There's also a free API for those interested in investigating these and other Internet trends. Along with the HTTP method, the server will perform the action on the resource.

IP Address 121

IP Address Networking Network Server 121