Kentik

JULY 8, 2019

Border Gateway Protocol (more commonly known as BGP ) is the routing protocol that makes the internet work. It is the language spoken by routers to determine how packets can be sent from one router to another to reach their final destination. In this case it was due to more specific prefixes that should not have been advertised.

Routers 58

Routers Protocol Internet Advertising 58

Kentik

AUGUST 15, 2016

Further Thoughts on Advertising Your Routes with BGP. Since every packet destined for the Internet (as opposed to your internal network) is going to go out the same router interface, it doesn’t matter whether it does so via one default route or via searching a list of 45,000 or more routes heard via BGP. BGP for the multi-homed.

Advertising 40

Advertising Routers Internet Networking 40

Kentik

JULY 25, 2016

More Basics: Advertising, Homing, and Cardinal Sins. In part 1 of this series, we established that BGP is the protocol used to route traffic across the interconnected Autonomous Systems (AS) that make up the Internet. Advertising Routes. For example, if you advertise 192.204.4.0/24 If you have any other networks (e.g.

Advertising 40

Advertising Internet Routers Protocol 40

CATO Networks

APRIL 25, 2017

Layer-3 Service Insertion With L3 service insertion, network services in the datacenter are inserted at the router. Users in Subnet #1 send traffic to their router that does an L3 lookup and forwards packets to the servers in Subnet #2. Virtual route forwarding (VRF) is typically enabled with a VRF for one side of the router (Subnet.#1

WAN 52

WAN Routers Firewall Wide Area Network 52

NW Kings

JANUARY 7, 2025

In this blog, we will explore what static routes are, how they differ from dynamic routes, and how to configure them on routers like Cisco devices. This characteristic makes them efficient for routers with limited processing capabilities. NOTE : Join our Network Specialist Master’s Program today!

Routers 52

Routers IP Address Protocol Topology 52

Kentik

AUGUST 1, 2016

In particular we’ve learned that speaking or advertising BGP to your service providers and/or peers lets you do two things: Make semi-intelligent routing decisions concerning the best path for a particular route to take outbound from your network (otherwise you would simply set a default route from your border routers into your service providers).

Routers 40

Routers Advertising IP Address Ethernet 40

Kentik

MARCH 13, 2019

Distributed denial-of-service (DDoS) attacks have been a continuous threat since the advent of the commercial Internet. A common DDoS mitigation technique is Remotely-Triggered Black Hole (RTBH), which requires extensive pre-configuration of discard routes and/or uRPF on all edge routers. Introducing Kentik’s New BGP Flowspec Support.

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IP Address Port Routers DNS 49

Kentik

FEBRUARY 22, 2018

[vc_row][vc_column][vc_column_text] The Internet of Things (IoT) represents a massive threat to network infrastructure as already seen in widely publicized IoT-based DDoS attacks. Another Mirai botnet variant was used in extortion attacks against a number of banks and Internet service providers in the United Kingdom and Germany.

IoT 40

IoT Advertising Internet Networking 40

Kentik

DECEMBER 19, 2016

If you run hybrid Cloud, and you’re running at least some of your own infrastructure, then again switches, routers, BGP tables, but to get that sort of augmented information, it can come from the host agent. We’ve got an advertising technology customer, and ad tech is a really interesting space for network sophistication.

Networking 40

Networking Network Application Server 40

Kentik

JUNE 5, 2023

In the summer of 2022, I joined a team of BGP experts organized by the Broadband Internet Technical Advisory Group (BITAG) to draft a comprehensive report covering the security of the internet’s routing infrastructure. Below is an edited version of my take on the internet’s most notable BGP incidents.

IP Address 145

IP Address DNS Internet Routers 145

Kentik

APRIL 24, 2021

According to data available from University of Oregon’s Routeviews project, one of the very first BGP messages from AS8003 to the internet was: TIME: 01/20/21 16:57:35 TYPE: BGP4MP/MESSAGE/Update FROM: 62.115.128.183 AS1299 TO: 128.223.51.15 announced by the DoD on the internet). 8 among other large DoD IPv4 ranges.

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Internet IP Address Protocol Advertising 145