Teimouri

FEBRUARY 1, 2024

However, a complicated web of protocols, akin to gears operating behind the curtain, lurks under the surface of the relatively simple click-and-stream experience. Although one of these protocols, the ancient TCP, has been a good fit for us for many years, its shortcomings are becoming more noticeable as our online needs grow.

Protocol 52

Protocol TCP Network Networking 52

NW Kings

DECEMBER 10, 2024

Understanding TCP ports is essential for managing network traffic and ensuring effective communication. But what is a TCP port? This blog will delve into what a TCP port is, how it works, its significance in networking, and the different types of ports, including well-known and dynamic ports. What is a TCP Port?

UDP port 40

UDP port Port TCP IP Address 40

Engineering at Meta

MARCH 6, 2024

Implementing an end-to-end encrypted protocol First, we need to protect the underlying security that keeps communication on Meta E2EE messaging apps secure: the encryption protocol. WhatsApp and Messenger both use the tried and tested Signal protocol as a foundational piece for their encryption.

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Protocol Encryption Server Media 135

ByteByteGo

NOVEMBER 30, 2024

With each iteration, the protocol has evolved in new and interesting ways. The protocol was built on top of TCP and provided a reliable way of communication over the World Wide Web. However, it still used TCP as the underlying protocol. In other words, HTTP 3 has moved away from TCP.

TCP 100

TCP Protocol Server Email 100

Engineering at Meta

MAY 22, 2024

How Meta is enabling PQC Meta’s TLS protocol library, Fizz , is designed for high security, reliability, and performance. The use of our own implementation has allowed us to quickly react to new features in the TLS protocol. This poses some challenges given significant usage of TCP Fast Open (TFO) for internal traffic.

TCP 119

TCP Encryption Server Bandwidth 119

Kentik

SEPTEMBER 20, 2021

Packet loss in TCP connections results in retransmissions which can introduce significant latency. Below is the beginning of a TCP handshake. Although the ping utility on our computers uses ICMP, which is the first to see latency, other utilities similar to ping can execute tests similar to ping on top of TCP and UDP.

TCP 116

TCP Routers Bandwidth IP Address 116

Noction

APRIL 9, 2024

Similar to interior gateway protocols (IGPs) like EIGRP, OSPF, or ISIS, BGP establishes peering with other routers before exchanging routing information. Understanding BGP states is essential to grasp how BGP operates. However,

Port 52

Port TCP Gateway Routers 52

Packet Pushers

MAY 2, 2024

Internet Control Message Protocol (ICMP) is the protocol that lets you test reachability: Pings, echoes, TCP connections, etc. Internet Control Message Protocol (ICMP) is the protocol that lets you test reachability: Pings, echoes, TCP connections, etc.

TCP 52

TCP Protocol Internet 52

CloudFaire

DECEMBER 30, 2024

Internet protocol specifications are instructions designed for engineers to build things. Protocol designers take great care to ensure the documents they produce are clear. HTTP/3 is an application protocol that maps HTTP semantics to QUIC, such as defining how HTTP requests and responses are assigned to individual QUIC streams.

Protocol 101

Protocol Server Internet TCP 101

CATO Networks

JANUARY 15, 2024

In the previous post , weve discussed how passive OS identification can be done based on different network protocols. In this post, we will focus on the network and transport layers and introduce a machine learning OS identification model based on TCP/IP header values. Figure 4: Building a tree from the data level 1 and level 2.

TCP 52

TCP Network Networking Engineering 52

Kentik

OCTOBER 4, 2021

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. Before the outage, UDP delivering traffic-intensive video dominated the volume of traffic volume while TCP constituted a minority.

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TCP DNS Server Media 145

Network Engineering

DECEMBER 21, 2015

Also, I was reading about Transport layer protocol when this line caught my eye: More than one transport layer protocol may be available to network applications. For example, the internet has two protocols - TCP and UDP. I doubt that those even had a Transport layer protocol.

Internet 52

Internet Protocol Network Networking 52

CloudFaire

DECEMBER 27, 2024

Todays roundup blog post shares two exciting updates across our platform: our cross-platform 1.1.1.1 & WARP applications (consumer) and device agents (Zero Trust) now use MASQUE , a cutting-edge HTTP/3 -based protocol, to secure your Internet connection. well-known/masque/ip/*/*/ :authority = example.org capsule-protocol = ?1

Protocol 88

Protocol Internet Encryption DNS 88

TDAN

NOVEMBER 6, 2024

The internet is a global computer network: Consisting of a worldwide network of computer networks and Using Transmission Control Protocol/Internet Protocol (TCP/IP) to facilitate data transmission and exchange. Simply speaking, the internet is the abbreviation of internetworking, i.e., network of networks.

IoT 52

IoT TCP Protocol Internet 52

Kentik

JANUARY 24, 2022

You can also learn about the protocols in use, the ports being used, the top interfaces, etc. IP protocol. 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. Source IP address. Destination IP address. IP type of service.

Application 96

Application IP Address DNS Port 96

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.

TCP 88

TCP Internet DNS Protocol 88

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. In some cases if ICMP is filtered, you can usually switch to TCP (Transmission Control Protocol) and use tcping, telnet, or another TCP-based method to check for reachability.

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Network Networking TCP Protocol 114

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

Packet Pushers

SEPTEMBER 3, 2021

Our guests have published a paper about how the TCP protocol and middleboxes such as firewalls can be weaponized by bad actors and used in reflective amplification attacks. Today's Heavy Networking podcast dives into academic research on DDoS attack techniques.

Firewall 52

Firewall TCP Network Networking 52

The Network DNA

JULY 31, 2024

An administrator configures default gateway configuration manually while configuring the system on the LAN or it can be configured automatically using the DHCP protocol. Or it is built automatically by using the different routing protocols such as OSPF, BGP, RIP etc. CCNA RnS Article #28: Why Spanning Tree Protocol?

IP Address 98

IP Address Ethernet Routers Gateway 98

Kentik

DECEMBER 8, 2016

Not Just for NetFlow, Kentik Detect’s Analytics Cover All Major Flow Protocols. In networking terms, a “flow” defines a uni-directional set of packets sharing common attributes such as source and destination IP, source and destination ports, IP protocol, and type of service. NetFlow statefully tracks IP packets on a per-flow basis.

Protocol 40

Protocol Port Routers Network 40

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. Let’s highlight some of the primary protocols.

Network 52

Network Networking IP Address TCP 52

The Network DNA

JUNE 10, 2024

Protocol Information: It comprises information about the protocol being used (e.g., TCP, UDP, ICMP). Session Information: The xlate table stores TCP and UDP session state information, such as established connections and timeouts. Interface Information: It records the ingress and egress interfaces for packets.

Firewall 52

Firewall IP Address TCP Port 52

Kentik

JANUARY 10, 2022

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. However, these protocols are a great latency measurement tool and should be kept in your tool kit. This would cut time off the test.

IP Address 98

IP Address DNS TCP Application 98

Confluent

OCTOBER 10, 2019

Machines provide a large number of usually closed and incompatible protocols in a proprietary format. OPC UA: this is an open and cross-platform, machine-to-machine communication protocol for industrial automation. In the IoT environment, for example, a large number of protocols for data exchange have developed in recent years.

IoT 20

IoT Internet Protocol Cloud 20

Heroku

NOVEMBER 21, 2024

is subject to automatic load tests that run continuously, at varied request rates, body sizes, protocol versions. Our first thought was that perhaps the legacy router is faster at forwarding requests to the dyno because its underlying TCP client manages connections in a way that plays nicer with the Puma server. dyno root@router.1019708

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Routers TCP Server DNS 59

The Network DNA

JANUARY 26, 2025

CCNA RnS Article #28: Why Spanning Tree Protocol? CCNA RnS Article #32: Influencing STP CCNA RnS Article #31: STP Behavior CCNA RnS Article #30: STP: Under the Hood CCNA RnS Article #29: What STP Does?

Ethernet 59

Ethernet LAN Protocol TCP 59

Kentik

NOVEMBER 4, 2018

In addition to basic data like source and destination IP address, port, protocol, etc., we collect network performance metrics like TCP connection setup latency, retransmitted and out-of-order packet counts, and window size.

IP Address 67

IP Address Protocol TCP DNS 67

Kentik

SEPTEMBER 11, 2018

Network elements that support traffic monitoring protocols such as NetFlow and sFlow extract critical details from packet flows, like source, destination, byte and packet counts, and other attributes. NetFlow is the trade name known for a session sampling flow protocol invented by Cisco Systems that is widely used in the networking industry.

Protocol 66

Protocol Ethernet Network Networking 66

CATO Networks

JUNE 1, 2020

Proxy TCP Connections Fundamentally, TCP (Transmission Control Protocol) connections inherently add more overhead than their UDP (User Datagram Protocol) counterparts. At scale, this leads to scenarios where TCP connections can significantly contribute to network congestion and reduce throughput.

Network 52

Network Networking TCP MPLS 52

Kentik

APRIL 3, 2023

event(data) duration = float(event) / 1000000 print("TCP retransmit detected (duration: %0.2f tcpdrop allows you to trace TCP packet drops. tcpconnect allows you to trace active TCP connections. tcpretransmit allows you to see the retransmission of TCP packets when an acknowledgement expires, a common cause of latency.

TCP 110

TCP Application Virtual machine Network 110

The Network DNA

JUNE 3, 2024

Select Add to add a load balancing rule Step 2: To configure a load balancer, enter the name, IP version, frontend IP address (if multiple), protocol, and port mapping (incoming traffic will be redirected to the backend port). Select Add to add a new health probe Step 2: In the Load balancer pane, under Settings, select Health probes.

IP Address 52

IP Address Port Protocol Virtual machine 52

Kentik

OCTOBER 12, 2021

HTTP is the new TCP. Fifteen years ago, NetOps could start up a packet analyzer and see all kinds of different unencrypted protocols such as FTP, SMTP, POP3, HTTP, DNS, etc. These protocols helped the NPM identify applications. Start up a packet or flow analyzer and make note of the most popular protocol.

Encryption 84

Encryption DNS IP Address Protocol 84

Akins IT

APRIL 27, 2020

With that said, the two most common VPN protocols are IPSEC and SSL VPN. Although both options are similar in their overall goal of providing secure connectivity, there are differences as we get more specific with the protocols and its capabilities. Both are equally viable options for secure access to company data and resources.

VPN 52

VPN Protocol Port TCP 52

CATO Networks

DECEMBER 3, 2019

VPNs encapsulate data and encrypt the data using an algorithm contained within the transmission protocol. Todays VPNs primarily use one of the three major protocols, each of which has its advantages and disadvantages: PPTP is one of the oldest protocols and came into existence back in the days of Windows 95.

VPN 52

VPN Encryption Wide Area Network Protocol 52

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.

TCP 46

TCP Internet DNS Protocol 46

CATO Networks

MAY 4, 2020

Protocol acceleration techniques improve protocol operation across the network, particularly in terms of reducing the latency introduced by inefficient protocol operation. Local flow control, selective acknowledgment, and window scaling are techniques that help enhance TCP connections.

WAN 52

WAN Network Networking Bandwidth 52