Rate Limiting Part 1

Algorithms

Posted on June 25, 2018

Overview In general, rate limiting is used to control the consumption rate of a resource. For example, up to 10 requests can be served by the server per minute. Or up to 1MB data can be sent to the network per second. Rate limiting is necessary for protecting a system... [Read More]
Tags: Algorithm Java Rate Limiting

TAP Interface Lab

A Hypervisor Emulator

Posted on June 8, 2018

Overview We talked about TUN and TAP interface in previous post. In the article Tun/Tap interface Tutorial, the author wrote a program to demonstrate the usage of a TUN interface. In this post, we will write a program that uses TAP interfaces. The code for this lab can be found... [Read More]
Tags: Linux Network TAP Lab

Linux Bridge - Part 2

Posted on January 31, 2018

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Overview In previous post, I described the configuration of a linux bridge and showed an experiment in which wireshark was used to analyze the traffic. In this article, I will discuss what happens when a bridge is created and how a Linux bridge works. [Read More]
Tags: Network Linux Bridge

Linux Bridge - Part 1

Posted on December 13, 2017

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Overview In previous post, I described the concept of VXLAN and said it is heavily used in SDN (Software Defined Network). Although SDN is a relatively new concept, the support for virtual networking is not - Linux bridge has made it possible long before. It could be helpful to learn... [Read More]
Tags: Network Linux Bridge KVM

VXLAN

Virtual eXtensible Local Area Network

Posted on November 23, 2017

Overview In one sentence, VXLAN (RFC 7348) is a protocol for overlaying virtualized layer 2 networks over Layer 3 networks. In this post, I will first introduce some network basics for better understanding the concept of VXLAN. Then I will talk about what is VXLAN, why using VXLAN and the... [Read More]
Tags: Network VXLAN SDN