The Network DNA

JUNE 3, 2024

The internal load balancer is assigned a private IP address from the virtual network's subnet range for the frontend and targets the private IP addresses of backend services (often Azure virtual machines). We can select options for Public IP address (new or existing), SKU, assignment, and IPv6.

IP Address 52

IP Address Port Protocol Virtual machine 52

Confluent

JULY 1, 2019

The actual host and IP that it will connect to for reading/writing data is based on the data that the broker passes back in that initial connection —even if it’s just a single node and the broker returned is the same as the one it’s connected to. A listener is a combination of: Host/IP. Let’s check out some config. on AWS, etc.)

Port 101

Port IaaS DNS Network 101

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

NW Kings

DECEMBER 16, 2024

This blog will explore the key protocols within the transport layer, focusing on TCP ( Transmission Control Protocol ) and UDP (User Datagram Protocol) in detail. This layer operates on two primary protocols: TCP and UDP , each serving different purposes in data transmission. What is the Transport Layer?

Protocol 40

Protocol TCP Port Network 40

Kentik

MAY 2, 2018

They can then announce the routes (groups of IP addresses) that they own from their ASN. During a BGP route hijack, an attacker advertises IP prefixes from an ASN that is not the normal originator. This causes legitimate traffic to those IPs to be redirected to the attacker.

IP Address 49

IP Address DNS UDP port Advertising 49

Kentik

MARCH 13, 2019

For destination-based RTBH, the victim’s destination IP address becomes completely unreachable. The victim can update DNS to point at a different IP address in an attempt to get their application back up. The victim can update DNS to point at a different IP address in an attempt to get their application back up.

IP Address 49

IP Address Port Routers DNS 49

CATO Networks

AUGUST 18, 2022

This includes elements like IP address, subnet, username, group membership, hostname, remote user, site, and more. Additionally, policy rules can be further refined based on application context including application (custom applications too), application categories, service, port range, domain name, and more.

SASE 52

SASE Cloud Port Firewall 52

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

Network Engineering

JULY 3, 2021

interface Vlan1 nameif inside security-level 100 ip address 192.168.1.1 interface Vlan2 nameif outside security-level 0 ip address dhcp setroute ! dhcpd address 192.168.1.5-192.168.1.254 0: Int: Internal-Data0/0 : address is 30f7.0d7e.96c7, 96c7, irq 11 1: Ext: Ethernet0/0 : address is 30f7.0d7e.96bf,

VPN 52

VPN IP Address Encryption TCP 52

Kentik

APRIL 3, 2023

event(data) duration = float(event) / 1000000 print("TCP retransmit detected (duration: %0.2f You can modify the program to capture other information as well, such as the number of retransmit attempts or the source and destination IP addresses of the affected packets. tcpdrop allows you to trace TCP packet drops.

TCP 110

TCP Application Virtual machine Network 110

CATO Networks

JULY 18, 2018

Legacy networks route traffic based on IP address or subnet, information that bears little resemblance to the business. Using the robust DPI engine underlying Cato Cloud, were able to detect and classify hundreds of SaaS and datacenter applications regardless of port, protocol, or evasive technique and without SSL inspection.

WAN 52

WAN IP Address MPLS Cloud 52

Kentik

NOVEMBER 23, 2015

DoS becomes DDoS when the source of the attack is distributed, meaning that the attack comes from more than one unique IP address. According to Akamai’s Q1 2015 State of the Internet report , over 50% of volumetric attacks are IP flood attacks involving a high volume of spoofed packets such as TCP SYN, UDP, or UDP fragments.

IP Address 40

IP Address Port Protocol Internet 40

Kentik

DECEMBER 5, 2016

Next we set Metric (still in the Query pane) to look at the percentage of TCP retransmits. In the Filters pane, we filtered to show only dest port 179 (BGP). In the Devices pane we chose any devices that could be sending traffic to the destination IPs in question. Clues from AS Path.

Network 40

Network Networking TCP IP Address 40

Kentik

DECEMBER 2, 2015

Here’s how these types of schemes work: The spammer sends a SYN from a spoofed source IP address to TCP port 25 (SMTP) on the target mail server. First, we’ll write a query to get a list of all the hosts in the network that are receiving traffic from remote source port TCP/25 (the traffic described in Step 2 above).

TCP 40

TCP Protocol Port IP Address 40

CATO Networks

FEBRUARY 26, 2020

NGFW also supports the creation of custom application definitions to enable identification of specific apps based on TCP/UDP port, IP address, or domain. Catos IPS uses metadata from network traffic flows and third-party data feeds in conjunction with machine learning algorithms to detect suspicious network activity.

Network Security 52

Network Security Network Networking UDP port 52

CATO Networks

MAY 20, 2020

NGFWs can drill down beyond IP addresses, TCP/UDP ports, and network protocols to enforce policies based on packet content. Faster containment of threats Once a live threat is verified, automatic containment actions such as disconnecting affected endpoints and blocking malicious domains or IP addresses.

Network Security 52

Network Security Network Networking UDP port 52

Kentik

OCTOBER 2, 2015

Kentik Detect customers use alerts to monitor various metrics in the data that is ingested into the Kentik Data Engine (KDE), including information on devices, interfaces, IP/CIDR, Geo, ASN, and ports. Define a TCP Syn alert based on the queries provided in Defining an Alert below. supplemental 1: layer 4 destination port.

Port 40

Port Protocol Server Bandwidth 40

Kentik

JUNE 6, 2023

To expose Docker’s API to the world , use: sudo dockerd -H unix:///var/run/docker.sock -H tcp://0.0.0.0:2375 2375 Connect to your server at its IP address over port 2375. Add the hostname or IP address of your API here. That means whitelisting the following: IP addresses: 208.76.14.0/24

IP Address 52

IP Address Server TCP Port 52

Kentik

FEBRUARY 8, 2016

A border router is a router that is configured to peer with a router in a different AS, meaning that it creates a TCP session on port 179 and maintains the connection by sending a keep-alive message every 60 seconds. One or multiple border routers. The advertising of routes helps a network operator do two very important things.

Advertising 49

Advertising Routers Internet Protocol 49

Kentik

DECEMBER 18, 2018

The Sunburst diagram on the right shows how top GCP instances are serving traffic out to the Internet with an interactive breakdown showing source ports that you’re delivering services from, the machine or machines hosting that service, followed by the zone, subnet, destination ASNs, and even top destination IPs that are consuming those services.

Cloud 45

Cloud Network Networking Port 45

Kentik

JULY 28, 2021

It isn’t so much that packet loss is a huge problem — TCP and QUIC were engineered in anticipation that lost packets would be inevitable. Latency : Missing packets in connection-oriented protocols such as TCP and QUIC result in lost packets getting resent. Bad hardware (the switch or router port). UDP vs. TCP.

Cloud 116

Cloud TCP Routers Protocol 116