Category Archives: Networking

My talk about DevOps at Coffee and Code, Goa

By | 15th December 2018

On 13 October 2018 I had given a talk about Devops – The art of managing infrastructure at scale at a Cofee and Code event held at 91Springboard, Goa. In the talk I spoke about managing infrastructure from different perspectives – developer, Linux sysadmin, network admin and leveraging open source tools to do so. I… Read More »

Updates to blog – BGP, IPv6, TLS 1.3 and more

By | 8th December 2018

Just wanted to share a few updates about blog and life. TLS 1.3 with 0-RTT TLS 1.3 is a new standard of encryption on the web and I have implemented it! This should result in faster load times and improved security for the users. ECDSA certs are enabled too, along with RSA for better performance.… Read More »

BGP on a shoestring – The definitive guide

By | 5th December 2018

Virtually every address on the internet is connected with each other with a protocol called as the Border Gateway Protocol(BGP), which dynamically routes traffic on the internet to the closest network. This guide will show you how you can be part of the internet for the cheapest possible cost. This guide is intended for sysadmins… Read More »

Issues plaguing NIXI internet exchange in India

By | 23rd May 2018

Before proceeding I want to make it absolutely clear that these are my personal views only and nothing to do with my employer or their views. National Internet Exchange of India(NIXI) is an internet exchange in India, infact one of the few in the country and is fully government owned non-profit entity initially established to… Read More »

Ultimate OpenVPN setup – inter-connecting, connecting to multiple sites at once

By | 21st May 2018

I had multiple networks scattered around different places and needed a way to link all of them together. They were as follows: Work related VPNs. There were multiple VPNs to access different parts of the internal networks. Handling multiple VPN files was very cumbersome. For convinience let’s assume we have a single network here –… Read More »

Multi-WAN failover without session termination

By | 5th April 2018

One of the reasons why people run BGP is when reliability is of utmost importance and sessions terminating abruptly can simply be not afforded, especially in cases like VOIP. However this is an expensive proposition both cost and skill wise. There may be a middle ground between this and simple failover with multiple uplinks. That… Read More »

How to protect against DDOS attacks in India when working in web development

By | 29th May 2017

Whether you may be a large web host, or a small ISP serving a neighborhood; DDOS attacks in India can be extremely problematic and hard hitting. Here are some of the ways you can ensure that you aren’t affected by a lot. All of these solutions assume that you are running BGP. We were able… Read More »

How to fake pings and traceroutes

By | 21st April 2017

I recently read Srijit Banerjee’s excellent article, which brought to light ugly things done by service providers to fool their customers who have grown accustomed to the ping google.com command to judge the quality of the internet. While he has strayed away from how this is done, I feel that educating people on how this… Read More »