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.

UDP port 40

UDP port Port TCP IP Address 40

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. NetFlow application monitoring: Use DNS logs.

Application 96

Application IP Address DNS Port 96

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 Network 101

DoorDash Engineering

AUGUST 15, 2023

With these hooks, we can intercept and understand TCP and UDP connections across our multiple Kubernetes clusters. For example, our DNS probe has an event with just the network namespace id (netns), process id (pid), and the raw packet data. For TCP, we use two probes to track when a connection is initiated and when it is closed.

DNS 84

DNS TCP Application Network 84

Heroku

NOVEMBER 21, 2024

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. ec2:11059 tcp 0 0 ip-10-1-87-57.ec2:28631 ec2:11059 ESTABLISHED tcp 0 0 ip-10-1-87-57.ec2:30717 ec2:11059 tcp 0 0 ip-10-1-87-57.ec2:24630

Routers 59

Routers TCP Server DNS 59

Kentik

MAY 2, 2018

During last week’s attack, the attacker was redirecting traffic that belonged to Amazon’s Route 53 DNS servers. Below is a diagram of how this attack worked: Once the attackers have the DNS requests coming to them, they can respond with the IP address of a server they control.

IP Address 49

IP Address DNS UDP port Advertising 49

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