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How to find applications with NetFlow

Kentik

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.

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What is a TCP Port: Different Between TCP and UDP Ports

NW Kings

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?

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Kafka Listeners – Explained

Confluent

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
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AWS Route 53 BGP Hijack: What Kentik Saw

Kentik

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.

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BPFAgent: eBPF for Monitoring at DoorDash

DoorDash Engineering

For example, our DNS probe has an event with just the network namespace id (netns), process id (pid), and the raw packet data. pkg: github.com/doordash/bpfagent/pkg/tracing/dns cpu: Intel(R) Core(TM) i9-8950HK CPU @ 2.90GHz BenchmarkEventUnmarshal-12 8289015 127.0 rdr, err := ringbuf.NewReader(p.objs.Events) //.

DNS 84
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Basic configurations on Cisco ASA Firewall - Part 2

The Network DNA

10.10.10.100 inside NDNA-ASA(config)# dhcpd dns 112.110.112.5 Configure an ACL to allow access to the DMZ server from the Internet NDNA-ASA(config)# access-list OUTSIDE-DMZ permit ip any host 10.10.2.3 Cisco ASA in a Network Configuring DHCP, AAA, and SSH NDNA-ASA(config)# dhcpd address 10.10.10.3-10.10.10.100 255.255.255.0

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Under the Hood: How Rust Helps Keep Kentik’s Performance on High

Kentik

Simply put: Rust is a big part of how Kentik ingests Gigabits per second representing over a Petabit per second of Internet traffic, and stores 100 TB of network flow data each day. In addition to basic data like source and destination IP address, port, protocol, etc.,