IT Management & Cyber Security

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 sees the traffic as originating from the instance’s public IP. For example, assume an instance with a private IP address of 172.31.7.10 is associated with the EIP 35.168.241.48. When the instance attempts to send a packet to the Internet host 198.51.100.11, it will send the following packet to the Internet gateway: The Internet gateway will translate this packet to change the source IP address to the instance’s public IP address. The translated packet, which the Internet gateway forwards to the host, looks like this: Likewise, when a host o...

Introduction to Amazon Glacier Service this is the blog topic in that you will learn S3 and Glacier Select, Amazon Glacie r , Storage Pricing & Other Storage-Related Services like Amazon Elastic File System, AWS Storage Gateway, AWS Snowball etc S3 and Glacier Select AWS provides a different way to access data stored on either S3 or Glacier: Select. The feature lets you apply SQL-like queries to stored objects so that only relevant data from within objects is retrieved, permitting significantly more efficient and cost-effective operations. One possible use case would involve large CSV files containing sales and inventory data from multiple retail sites. Your company’s marketing team might need to periodically analyse only sales data and only from certain stores. Using S3 Select, they’ll be able to retrieve exactly the data they need—just a fraction of the full data set—while bypassing the bandwidth and cost overhead associated with downloading the whole thing. Related P...