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

Network Engineering

JANUARY 23, 2025

is fine if the lan port is opened but when the lan port is off it doesn't open router setup page? I have a mobile phone (Realme c55) which support otg.I have a Ethernet to typec device that let me connect to the router without password.It

LAN 52

LAN Routers Port Ethernet 52

CloudFaire

JANUARY 3, 2025

After the initial TCP handshake, each peer may announce additional addresses (and ports) on which it can be reached. First, in the handshake TCP packet each peer specifies the " Do not attempt to establish new subflows to this address and port " bit, also known as bit [C], in the MPTCP TCP extensions header. There are caveats though.

TCP 137

TCP Port Server Advertising 137

Network Engineering

JUNE 30, 2023

I am trying to get a thorough understanding of what does happen when a switch is connected to a portfast port on another switch that is part of a stable STP network in case of: 1- the port has no bpduguard. 2- the port has the bpduguard enabled. However, how is that better than reverting the port back to STP?

Port 52

Port Internet Networking Network 52

InfoQ Articles

AUGUST 14, 2024

Developers typically choose between porting the code or dynamic linking to run native code on the JVM. This article examines these approaches, using SQLite as an example, and introduces a third option: Chicory Wasm runtime.

Port 114

Port 114

Kentik

SEPTEMBER 22, 2021

Knowing the source and destination IPs of the NetFlow of a traffic surge isn’t enough to decompose a networking incident into the specific OTT services, ports, and CDNs involved. The capability is more than simple NetFlow analysis. Microsoft Patch Tuesday. Last week, Kentik customers were experiencing another Patch Tuesday.

DNS 145

DNS Port Routers Networking 145

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 Networking DNS 101

Kentik

MAY 21, 2019

In short, the Mirai network of bots was built by malicious actors who exploited remote access and control protocol ports over many different device types, producing damaging traffic levels and creating an advanced, powerful tool that can be used for large-scale DDoS attacks and many other nefarious purposes.

Port 81

Port IP Address Internet Networking 81

Engineering at Meta

OCTOBER 15, 2024

Tbps with 64x OSFP ports, and the design is optimized without the need of retimers to achieve maximum power efficiency. As a distributed system, DSF is designed to support high scale AI clusters. The Minipack3 utilizes Broadcom’s latest Tomahawk5 ASIC while the Cisco 8501 is based on Cisco’s Silicon One G200 ASIC.

Networking 117

Networking Network Data Centers Port 117

Noction

APRIL 9, 2024

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

Port 52

Port TCP Gateway Routers 52

Kentik

FEBRUARY 8, 2023

This can be done through a variety of techniques, such as using network taps, port mirroring, or software probes. Port mirroring Another method for gathering traffic telemetry is port mirroring, which replicates (mirrors) the network traffic on a switch or router to a monitoring device.

Networking 111

Networking Network Port IP Address 111

Kentik

JANUARY 24, 2022

You can also learn about the protocols in use, the ports being used, the top interfaces, etc. 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. Don’t rely on ports. It’s pretty much impossible to block HTTP and HTTPS ports at the firewall.

Application 96

Application IP Address DNS Port 96

Network Engineering

JANUARY 28, 2025

Can someone help me understand if the ports on ASR 920 / CSR 540 series devices support the error Disable command ? I want to prevent the ports from going into a Err Disabled state due to flapping in the L1 link - normally Cisco equipment has a setting - but I cannot find it for these models.

Port 52

Port 52

DoorDash Engineering

MARCH 7, 2023

services: api: container_name: example-api build: context: dockerfile: /dockerfiles/Dockerfile-api-dev ports: - '8080:8080' volumes: -./src:/home/node/app/src It exposes port 8080, which is the port our Express server starts on, and mounts the. Next, create a docker-compose.yml file and define the application container.

Application 119

Application Port Cloud Engineering 119

Kentik

FEBRUARY 3, 2022

Comparing your transit price with the cost of a port to an internet exchange (IX) will not give an adequate picture since a number of other factors need to be taken into account. Membership fee in the case of an IX port. Economics: How to understand the cost of your connectivity. Cost elements. It’s also common to not have a commit.).

Port 105

Port 5G Routers Internet 105

Kentik

JANUARY 6, 2021

The critical context that enables teams to ask questions about users, applications, and customers (and not just IP addresses and ports). TAPs, SPAN, NPB : Access points in the network that provide port mirroring, tapping or packet brokering. The key telemetry types to shine a light on network activity and health.

Networking 128

Networking Network Gateway Access Point 128

Network Engineering

JANUARY 1, 2025

Objectives Install FreeRADIUS on CentOS(steam 9) to perform Cisco device authentication Perform dot1x authentication on all ports of the switch Perform authentication by connecting a laptop to the switch CentOS(203.230.7.2) - Cisco 2960 Switch(203.230.7.254) - Cisco 2800 Series Router(gig0/0 : 203.230.7.1, 255.255.255.0 255.255.255.0

Port 52

Port Routers Firewall Server 52

Engineering at Meta

JANUARY 27, 2023

Shiv routes packets to backends using a consistent hash of the 5-tuple of the packet (namely, the source IP, destination IP, source port, destination port, and protocol). stalled videos).

Engineering 142

Engineering Networking Network Data Centers 142

Packet Pushers

MARCH 8, 2024

We also cover line rate, port-to-port latency, and buffers. We also cover line rate, port-to-port latency, and buffers. Today we metaphorically pop open the hood of switches and routers, taking a look at the mechanics of how they work. We cover the three states: configuration, operational, and forwarding.

Port 52

Port MPLS Routers Networking 52

Teimouri

SEPTEMBER 5, 2024

VMware's vSphere Distributed Switch (VDS) is a potent tool that allows for centralized management of networking configuration across ESXi hosts, and one of its key features is its management of network port bindings. There are two main types of bindings that are available with VDS: static and ephemeral.

Data Centers 59

Data Centers Port Networking Network 59

Network Engineering

JANUARY 14, 2025

What I want to happen is to generate packets to go from Port 0 to reach the interface 1 in VPP and gets routed there to the interface 2 of VPP and from there get back at TRex port 1. I connected two 10GbE X710 cables between TRex and VPP machine which are both Linux and safely assigned those interfaces to dpdk-compatible drivers.

Ethernet 52

Ethernet Port IP Address MPLS 52

Kentik

NOVEMBER 17, 2021

Knowing the source and destination IPs of the NetFlow of a traffic surge isn’t enough to decompose a networking incident into the specific OTT services, ports, and CDNs involved. The capability is more than simple NetFlow analysis. The spice (and traffic) must flow.

DNS 99

DNS Port Routers Networking 99

Network Engineering

APRIL 18, 2022

For ACCESS port it is PVID if frame untagged or frame VID if frame is tagged, for TRUNK it is allowed VLANs? If the port is ACCESS we use PVID. If the entry was not found, we have to create an entry in the table (FDB) with the PVID of the ingress port as the Vlan field. That's why the Vlan field is an array. ingressPort.Id

Port 52

Port Network Networking 52

The Network DNA

JUNE 24, 2024

This table is populated automatically when a switch receives a frame on a port. As a frame is received on a port, its source MAC address is noted. The switch receives the frame from PC-1 that contains the MAC address 80::01 on port 1. Port 1 is configured as a member of VLAN-11. Then PC-1 wants to communicate with PC-2.

Ethernet 52

Ethernet Port LAN Protocol 52

Network Engineering

JANUARY 10, 2025

Can anyone tell me which router model in Packet Tracer has the following ports: Fa0/0 and Gig0/2? I have a lab exercise regarding NAT.

Routers 52

Routers Port 52

The Network DNA

JUNE 3, 2024

Rules enable port mapping from a load balancer's frontend to the backend pool, creating port relationships and forwarding incoming traffic. If we enable high-availability ports (only available on internal load balancers), this will remove the protocol options and enable load balancing on all ports for TCP and UDP protocols.

IP Address 52

IP Address Port Protocol Virtual machine 52

Kentik

OCTOBER 14, 2020

Though we’re not talking about huge volumes, depending on handover capacity, this could cause an issue in interconnection ports. Is it because my peering ports on the internet exchange are full? Is it because Valve’s peering ports on the internet exchange are full? It went from slightly above 10Gbps to nearly 30Gbps.

Networking 119

Networking Network Port Internet 119

Kentik

JUNE 7, 2023

They capture detailed information about network traffic, including: Source and destination IP addresses Ports Protocols Packet counts By analyzing these logs, you can gain visibility into the volume, patterns, and characteristics of traffic, such as whether it’s being dropped or incorrectly routed, to identify connectivity issues.

Cloud 97

Cloud Gateway Port IP Address 97

The Network DNA

JULY 16, 2024

A switch forwards the broadcast out all the ports in same VLAN (except the port where broadcast was received). To do that it builds the Ethernet Frame and puts its MAC address as the Source MAC address (SMAC) and layer 2 broadcast address (ff:ff:ff:ff:ff:ff). All hosts in same VLAN received this ARP request including PC-2.

Protocol 98

Protocol Ethernet IP Address LAN 98

Network Engineering

APRIL 7, 2022

When I connect a device to port 3 or 5, regardless if I have the port set to auto or I assign a static IP, I can not get anything to connect to the VLAN1 or VLAN2 (I am doing all this with the managed led on) I am sure I missing something simple.

Port 52

Port IP Address Routers 52

Noction

JULY 27, 2021

Dynamic IP and Port (DIPP) NAT oversubscription allows the reusability of a translated IP address and port. There are different types of oversubscriptions in networking.

IP Address 52

IP Address Networking Network Port 52

Network Engineering

JANUARY 10, 2025

On B, I have the following iptables rules: sudo iptables -t mangle -A PREROUTING -d 239.0.0.2 --protocol udp --destination-port 23000 -j TEE --gateway 172.21.0.3 sudo iptables -t mangle -A PREROUTING -d 239.0.0.2 --protocol udp --destination-port 23000 -j TEE --gateway 172.19.0.2 over tun1 and requests for 172.19.0.2 via 10.42.0.3

IP Address 52

IP Address Port Gateway Protocol 52

Packet Pushers

OCTOBER 22, 2024

Today’s Packet Protector rounds up recent security news, including revised password guidelines from NIST, a White House push to help fill infosec jobs, and potential espionage risks from Chinese-made cranes being used at US ports. Read more »

Port 52

Port Government 52

Network Engineering

JULY 17, 2019

This is how I can tell whether a port is online or offline. Now I would like to determine, what the mac address on each connected port is. I can easily pull the interface list status, by doing a OID walk. To physically resolve the location I then walk. 1.3.6.1.2.1.2.2.1.2) Can anyone help me out?

MAC Adress 52

MAC Adress Port 52

Network Engineering

DECEMBER 11, 2023

port=0, tag=any dst ip/id=0.0.0.0, port=0, tag=any dst ip/id=0.0.0.0, port=0, tag=any dst ip/id=10.1.10.0, port=0, tag=any dst ip/id=0.0.0.0, port=0, tag=any dst ip/id=0.0.0.0, port=0, tag=any dst ip/id=0.0.0.0, port=0, tag=any dst ip/id=0.0.0.0, port=0, tag=any dst ip/id=10.1.10.0, mask=0.0.0.0,

VPN 52

VPN Port Protocol WAN 52

AWS Architecture

AUGUST 7, 2024

High-level tenant portability flow Port identity stores : Evaluate the need for migrating the tenants identity store to the target tier. Port identity stores The key consideration for porting identity is migrating user identities while maintaining a consistent end-user experience, without requiring password resets or changes to user IDs.

Application 56

Application Port Gateway Engineering 56

Network Engineering

JANUARY 22, 2025

But how do you connect leaf switches that are beyond the number of ports spine switch has? What if there are more leaf than the ports in spine switch? How to connect 100k+ Nvidia GPUs with all spine switches? I am not able to understand this. Typical resource on the internet shows spine and leaf architecture like below.

Port 52

Port Data Centers Networking Network 52