Security group changes and new settings are immediately reflected in all EC2 instances. It takes a few minutes for the security group to be reflected on all EC2 instances Unlike the reflection in the existing EC2 instance, the security group is reflected in the new EC2 instance immediatelyĭ. It takes time for the SG to be reflected in the EC2 instances for which the security group has been setĬ. Security group changes are immediately reflected in all EC2 instancesī. How will the security group settings be reflected?Ī. You then used this security group to launch a new EC2 instance. You have set the security group rules to allow inbound traffic on a new port and with new protocol. As an operations personnel, you have decided to change the access settings to your EC2 instance. Your company has set up security groups on multiple EC2 instances. RDS can perform access authentication by using the database authentication function that uses the IAM role. Instead of controlling the traffic from the web server to the database server with the IAM role, the security group is used for control. Therefore, security groups are the suitable solution for controlling traffic between EC2 instances. The security group controls the traffic on his EC2 and other instances. Network ACLs can also control traffic, but this applies only to traffic between a subnet and the internet, not subnet to subnet communication. A VPC endpoint is a mechanism that allows AWS resources inside a VPC to access AWS services outside the VPC, and is not used to control traffic. Therefore, option 2 is the correct answer. You can control traffic from a particular EC2 instance by specifying the IP address of the EC2 instance within a security group. Security groups are a good way to control traffic between instances. Allow access from the web server to the DB server with the IAM role Please choose a response to meet this requirement.ĭ. The database server should only allow traffic from the web server. The web server and database server will be hosted on different EC2 instances, each located on a different subnet. We can specify allow rules, but not deny rules.Īs a Solutions Architect, you plan to build a web application consisting of a web server and a database server. We cannot block specific IP addresses using SGs, instead we use NACLs (Network Access Control Lists) If we create an inbound rule allowing traffic in, that traffic is automatically allowed back out again. We can have multiple SGs attached to EC2 instances. We can have any number of EC2 instances within a security group Changes to security group take effect immediately All inbound traffic is blocked by default We can attach more than one SG to EC2 instance. We cannot block individual IP addresses using security groups and we cannot block an individual port. Type: All traffic – Protocol: All – Port Range: All – Destination: 0.0.0.0/0 (IPv4) Type: SSH – Protocol: TCP – Port Range: 22 – Source: 0.0.0.0/0 (IPv4) Type: HTTP – Protocol: TCP – Port Range: 80 – Source: ::/0 (IPv6) Type: HTTP – Protocol: TCP – Port Range: 80 – Source: 0.0.0.0/0 (IPv4) Security groups are virtual firewalls that control traffic to our EC2 instances.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |