Overview of Network Layer Functions Many protocol models have existed over the years, but today the TCP/IP model dominates. And at the network layer of TCP/IP, two options exist for the most protocol around which all other network layer functions revolve: IP version 4 (IPv4) and IP version 6 (IPv6). Both IPv4 and IPv6 define the same sorts of network layer functions, but with different details. This chapter introduces these network layer functions for IPv4, …
VPC Network Address Translation When you associate an ENI with a public IP address, the ENI maintains its private IP address. Associating a public IP with an ENI doesn’t reconfigure the ENI with a new address. Instead, the Internet gateway maps the public IP address to the ENI’s private IP address using a process called network address translation (NAT). When an instance with a public IP connects to a host on the Internet, the host …
Overview of an Amazon Virtual Private Cloud Virtual service provides the networking layer of EC2. A VPC is a virtual network that can contain EC2 instances as well as network resources for other AWS services. By default, every VPC is isolated from all other networks. You can, however, connect your VPC to other networks, including the Internet and other VPCs. In addition to EC2, VPCs are foundational to many AWS services, so understanding how they …
You will learn in this blog AWS EC2 Storage Volumes, Elastic Block Store Volumes, EBS-Provisioned IOPS SSD, EBS General-Purpose SSD, Throughput-Optimized HDD and Cold HDD etc. EC2 Storage Volumes Storage drives are for the most part virtualized spaces carved out of larger physical drives. To the OS running on your instance, though, all AWS volumes will present themselves exactly as though they were normal physical drives. But there’s actually more than one kind of AWS …
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In this blog you will learn Configuring an Environment Instance, AWS Regions, Tenancy , Configuring Instance Behaviour and Instance Lifecycle. Configuring an Environment for Your Instance Deciding where your EC2 instance will live is as important as choosing a performance configuration. Here, there are three primary details to get right: geographic region, virtual private cloud (VPC), and tenancy model. AWS Regions As you learned earlier, AWS servers are housed in data centers around the world …
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Introduction of OSI Networking Model this blog is written on OSI Networking Model with it’s layer description as well as function and compared OSI with TCP/IP model. OSI Networking Model At one point within the history of the OSI model, many of us thought that OSI would win the battle of the networking models discussed earlier. If that had occurred, rather than running TCP/IP on every computer within the world, those computers would be running …
This blog is on TCP/IP networking model in that Overview has given as well as there different layer has been explained. Overview The TCP/IP model both defines and references a large collection of protocols that allow computers to communicate. To define a protocol, TCP/IP uses documents called Requests For Comments (RFC). (You can find these RFCs using any online search engine.) The TCP/IP model also avoids repeating work already done by another standards body or …
This blog is on TCP/IP Networking, you can know here more about Networking, it’s model and History Leading to TCP/IP with description. Introduction to TCP/IP Networking So, you’re new networking. Like many of us , your perspective about networks could be that of a user of the network, as against the network engineer who builds networks. For some, your view of networking could be supported how you use the web , from home, using a …
Learn Skills From Web Server Foot Printing / Banner Grapping By performing web server foot printing, you’ll gather valuable system-level data like account details, OS, software versions, server names, and database schema details. Use Telnet utility so as to footprint an internet server and gather information like server name, server type, operating systems, applications running, and so on. Use footprinting tools like Netcraft, ID Serve and httprecon, then on to perform web server foot printing, …
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Switchport port-security IOS Switch Commands, The switch port port-security command configures the port parameters to enable port security. switchport port-security maximum 1 The switch port port-security maximum command configures the maximum number of secure MAC addresses for the port. The switch port port-security maximum 1 command configures the maximum number of secure MAC addresses for the port as 1. switchport port-security violation restrict The switchport port-security violation command sets the violation mode and therefore the …
