In this article, we are going to look into this question. The intent of this question is to find out if you are aware of how you can design your network infra. They want to hear from you about private traffic, public traffic, how the traffic will go out, etc. Let’s start and have a
It’s always hectic to debug production issues and it is always wise to have a predefined step to debug any issues. But there can be scenarios where those steps may not work. In those scenarios also you should always have a flow in mind what to check. In this article, we are going to see
In this article, we are going to talk about a very well known method to keep things under control. This method is used in TCP when you see there are congestion and many other places. This method is called AIMD which stands for Additive Increase Multiplicative Decrease. Let’s see what it is and how it
In this article, we will talk about how traceroute works using ICMP. ICMP stands for Internet Control Message Protocol. This is used in the network layer just above the IP because ICMP messages are also encapsulated in IP packets. Now let’s have a look at how traceroute works using ICMP. When you type traceroute destination
In recent articles, we talked about containers a lot like the below articles. In this article also we are going to continue the same trend and talk about how docker networking works. To understand very basic docker networking we need some knowledge beforehand. Lets read about namespaces in linux, veth pair and bridge. Namespaces: Namespaces
If you are working as a DevOps you must have heard the name NAT. In this article, we will talk about them and SNAT and DNAT. NAT (Network Address translator) is generally used when you want to hide one side of the network and show it as a single IP. NAT keep a connection table
TCP stands for transport control protocol and it works in Transport Layer of Internet Protocol Stack. In this article we will see in short why is TCP a reliable protocol for sending data. This article is meant for very basic understanding and doesn’t deal with packets and other algorithms. We will talk about them in
IP stands for internet protocol and it powers the whole internet. In this small article we will see How Internet Protocol works for you and your software. Internet Protocol basically powers the whole internet. IP works in network layer and each packet or say datagram or packet in the network need to interact to it
You may have heard the name of proxy servers and what they do. In this part of article we will be talking about the difference between reverse proxy server and forward proxy server. Why are they used and how you can setup a proxy server. Lets see Reverse proxy vs forward proxy. Forward Proxy Server: Forward
Unable to do ssh into machine? I have seen this problem many time and i know this is one of the problems that everyone faces. Below are my personal list of things that you can try to solve this problem. Check for key permissions. This happens if you key or pem file does not have