Networking Flashcards
What is an Amazon Virtual Private Cloud (Amazon VPC)
A networking service to establish boundaries around your resources
What is a Subnet
a section of a VPC that can contain resources
**Public or Private
How do you allow public traffic from the internet to access your VPC
attach an internet gateway to the VPC
What is a Virtual Private Gateway
Allows protected internet traffic to enter into the VPC.
What is AWS Direct Connect
a service that lets you to establish a dedicated private connection between your data center and a VPC
What are Public subnets
resources that need to be accessible by the public, such as an online store’s website.
What are Private subnets
resources that should be accessible only through your private network, such as a database that contains customers’ personal information and order histories.
What is a Packet
a unit of data sent over the internet or a network
What is a Network Access Control List
a virtual firewall that controls inbound and outbound traffic at the subnet level
By default, your account’s default network ACL allows
Allows all inbound and outbound traffic
For custom network ACLs, all inbound and outbound traffic is
denied until you add rules to specify which traffic to allow.
all network ACLs have an explicit rule to allow or deny traffic?
explicit deny rule. This rule ensures that if a packet doesn’t match any of the other rules on the list, the packet is denied.
Network ACLs perform what type of packet filtering
Stateless Packet Filterning
What is Stateless Packet Filtering
They remember nothing and check packets that cross the subnet border each way: inbound and outbound
What is a Security Group
a virtual firewall that controls inbound and outbound traffic for an Amazon EC2 instance.
By default, a Security Group denies and allows
-denies all inbound traffic
-allows all outbound traffic
Security Groups perform what type of packet filtering
Stateful Packet Filtering
What is Stateful Packet Filtering
They remember previous decisions made for incoming packets.
What is Domain Name System (DNS) resolution
the process of translating a domain name to an IP address.
What is Amazon Route 53
connects user requests to infrastructure running in AWS (such as Amazon EC2 instances and load balancers). It can route users to infrastructure outside of AWS.
