Thủ Thuật Hướng dẫn Which term describes a network network link or channel located between the endpoints of a VPN? 2022

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How does a virtual private network (VPN) work?

A VPN extends a corporate network through encrypted connections made over the Internet. Because the traffic is encrypted between the device and the network, traffic remains private as it travels. An employee can work outside the office and still securely connect to the corporate
network. Even smartphones and tablets can connect through a VPN.

Nội dung chính

    How does a virtual private network (VPN) work?What is secure remote access?Is VPN traffic encrypted?Which term S describes programs used to control access to computer resources enforce policies audit usage and provide billing information?Which of the following terms describes hiding information from unauthorized third parties?Which term is used to describe a public key cryptography?Which term describes the process of converting ciphertext back into plain text?

What is secure remote access?

Secure remote access provides a safe, secure way to connect users and devices remotely to a corporate network. It includes VPN technology that uses strong ways to authenticate the user or device. VPN technology is available to check whether a device meets certain requirements, also called a device’s posture, before it is allowed to connect remotely.

Is VPN traffic encrypted?

Yes, traffic on the virtual network is sent securely by establishing an encrypted connection across the Internet known as a tunnel. VPN traffic from a device such as a computer, tablet, or smartphone is encrypted as it travels through this tunnel. Offsite employees can then use the virtual network to access the corporate network.

Q.: Why is an AWS Direct Connect gateway necessary?

An AWS Direct Connect gateway performs several functions:

    AWS Direct Connect gateway will give you the ability to interface with VPCs in any AWS Region (except the AWS China Region), so you can use your AWS Direct Connect connections to interface with more than one AWS Region.You can share a private virtual interface to interface with up to 10 VPCs to reduce the number of Border Gateway Protocol sessions
    between your on-premises network and AWS deployments.By attaching transit virtual interface(s) (VIF) to an AWS Direct Connect gateway and associating AWS Transit Gateway(s) with the Direct Connect gateway, you can share transit virtual interface(s) to connect with up to three AWS Transit Gateways. This can reduce the number of Border Gateway Protocol sessions between your on-premises network and AWS deployments. Once a transit VIF is connected to an AWS Direct Connect Gateway, that
    Gateway cannot also host another Private VIF – it is dedicated to the transit VIF.You can associate multiple virtual private gateways (VGWs, associated with a VPC) to an AWS Direct Connect gateway, as long as the IP CIDR blocks of the Amazon VPC associated with the Virtual Private Gateway do not overlap.

Q.: Can I associate more than one AWS Transit Gateway with an AWS Direct Connect gateway?

You can associate up to three Transit Gateway to an AWS Direct Connect
gateway as long as the IP CIDR blocks announced from your Transit Gateways do not overlap.

Q.: Can I associate VPCs owned by any AWS account with an AWS Direct Connect gateway owned by any AWS account?

Yes, you can associate VPCs owned by any AWS account with an AWS Direct Connect gateway owned by any AWS account.

Q.: Can I associate AWS Transit Gateway that are owned by any AWS account with an AWS Direct Connect gateway that is owned by any AWS account?

Yes, you can associate a Transit Gateway owned by any AWS account with an AWS Direct Connect gateway owned by any AWS account.

Q.: If I use an AWS Direct Connect gateway, does my traffic to the desired AWS Region go by way of the associated home AWS Region?

No. When using AWS Direct Connect gateway, your traffic will take the shortest path to and from your AWS Direct Connect location to the destination AWS Region, regardless of the associated home AWS Region of the AWS
Direct Connect location where you are connected.

Q.: Are there additional fees when using AWS Direct Connect gateway and working with remote AWS Regions?

There are no charges for using an AWS Direct Connect gateway. You will pay applicable egress data charges based on the source remote AWS Region and port hour charges. See the AWS Direct Connect pricing page for details. 

Q.: Do I need to use the same AWS account with my private/transit virtual interfaces(s), AWS Direct Connect gateway, Virtual Private Gateway, or AWS Transit Gateways in order to use an AWS Direct Connect gateway?

Private virtual interfaces and AWS Direct Connect gateways must be in the same AWS account. Similarly, transit virtual interfaces and AWS Direct Connect gateways must be in the same AWS account. Virtual private gateway(s) and AWS Transit Gateway(s) can be in different
AWS accounts than the account that owns the AWS Direct Connect gateway.

Q.: If I associate virtual private gateways (VGWs) to an AWS Direct Connect gateway, can I continue to use all VPC features?

Networking features, such as Elastic File System, Elastic Load Balancing, Application Load Balancer, Security Groups, Access Control List, and AWS PrivateLink, work with AWS Direct Connect gateway. AWS Direct Connect gateway does not tư vấn AWS VPN CloudHub functionality.
However, if you are using an AWS Site-to-Site VPN connection to a virtual gateway (VGW) that is associated with your AWS Direct Connect gateway, you can use your VPN connection for failover.

Features that are not currently supported by AWS Direct Connect are; AWS Classic VPN, AWS VPN (such as edge-to-edge routing), VPC peering, VPC endpoints.

Q.: I am working with an AWS Direct Connect Partner to get private virtual interface (VIF) provisioned for my account, can I use an AWS
Direct Connect gateway?

Yes, you can associate a provisioned private virtual interface (VIF) with your AWS Direct Connect gateway when you confirm that you are provisioned as private in your AWS account.

Q.: Can I connect to VPCs in my local Region?

You can continue to attach your virtual interfaces (VIFs) to
virtual private gateways (VGWs). You will still have intra-Region VPC connectivity, and will be charged the egress rate for the related geographic Regions.

Q.: What are the quotas associated with an AWS Direct Connect gateway?

Please refer to the AWS Direct Connect quotas page for information on this topic.

Q.: Can virtual private gateways (VGWs, associated with a VPC)
be part of more than one AWS Direct Connect gateway?

No, a VGW-VPC pair cannot be part of more than one AWS Direct Connect gateway.

Q.: Can you attach a private virtual interface (VIF) to more than one AWS Direct Connect gateway?

No, one private virtual interface can only attach to one AWS Direct Connect gateway OR one Virtual Private Gateway. We recommend that you follow
AWS Direct Connect resiliency recommendations and attach more than one private virtual interface. 

Q.: Does AWS Direct Connect gateway break existing AWS VPN CloudHub functionality?

No, AWS Direct Connect gateway does not break AWS VPN CloudHub. AWS Direct Connect gateway enables connectivity between on-premises networks and VPCs in any AWS Region.
AWS VPN CloudHub enables connectivity between on-premises networks using AWS Direct Connect or a VPN within the same Region. The VIF is associated with the VGW directly. Existing AWS VPN CloudHub functionality will continue to be supported. You can attach an AWS Direct Connect virtual interface (VIF) directly to a virtual private gateway (VGW) to tư vấn intra-Region AWS VPN CloudHub.

Q.: What type of traffic is, and is not, supported by AWS Direct Connect gateway?

Please refer
to AWS Direct Connect User Guide to review supported and not supported traffic patterns. 

Q.: I currently have a VPN in us-east-1 attached to a virtual private gateway (VGW). I want to use AWS VPN CloudHub in us-east-1 between the VPN and a new VIF. Can I do this with AWS Direct Connect gateway?

No, you cannot do this with an AWS Direct
Connect gateway, but the option to attach a VIF directly to a VGW is available to use the VPN AWS Direct Connect AWS VPN CloudHub use case.

Q.: I have an existing private virtual interface associated with virtual private gateway (VGW), can I associate my existing private virtual interface with an AWS Direct Connect gateway?

No, an existing private virtual interface associated with VGW cannot be associated with an AWS Direct Connect gateway. To do this, you must create
a new private virtual interface, and the time of creation, associate it with your AWS Direct Connect gateway.

Q.: If I have a virtual private gateway (VGW) attached to a VPN and an AWS Direct Connect gateway, and my AWS Direct Connect circuit goes down, will my VPC traffic route out to the VPN?

Yes, as long as the VPC route table has routes to the virtual private gateway (VGW) towards the VPN.

Q.: Can I attach a virtual private gateway (VGW) to an AWS Direct Connect
gateway if it is not attached to a VPC?

No, you cannot associate an unattached VGW to AWS Direct Connect gateway.

Q.: I have created an AWS Direct Connect gateway with one AWS Direct Connect Private VIF, and three non-overlapping virtual private gateways (VGWs) — each associated with a VPC. What happens if I detach one of the VGW from the VPC?

Traffic from your on-premises network to the detached VPC will stop, and VGW’s association with the AWS Direct Connect
gateway will be deleted.

Q.: I have created an AWS Direct Connect gateway with one AWS Direct Connect VIF, and three non-overlapping VGW-VPC pairs, what happens if I detach one of the virtual private gateways (VGW) from the AWS Direct Connect gateway?

Traffic from your on-premises network to the detached VGW (associated with a VPC) will stop.

Q.: Can I send traffic from a VPC that is associated with an AWS Direct Connect gateway to another VPC associated to the same AWS
Direct Connect gateway?

No, AWS Direct Connect gateway’s only tư vấn routing traffic from AWS Direct Connect VIFs to VGW (associated with VPC). In order to send traffic between two VPCs, you must configure a VPC peering connection.

Q.: I currently have a VPN in us-east-1 that is attached to a virtual private gateway (VGW). If I associate this VGW to an AWS Direct Connect gateway, can I send traffic from my VPN to a VIF attached to the AWS Direct Connect gateway in a different
AWS Region?

No, an AWS Direct Connect gateway will not route traffic between a VPN and an AWS Direct Connect VIF. To enable this use case, you must create a VPN in the AWS Region of the VIF and attach the VIF and the VPN to the same VGW.

Q.: Can I resize a VPC that is associated with an AWS Direct Connect gateway?

Yes, you
can resize the VPC. If you resize your VPC, you must resend the proposal with the resized VPC CIDR to the AWS Direct Connect gateway owner. Once the AWS Direct Connect gateway owner approves the new proposal, the resized VPC CIDR will be advertised towards your on-premises network.

Q.: Is there a way to configure an AWS Direct Connect gateway to selectively propagate prefixes to/from
VPCs?

Yes, AWS Direct Connect gateway offers a way for you to selectively announce prefixes towards your on-premises networks. For prefixes that are advertised from your on-premises networks, each VPC associated with an AWS Direct Connect gateway receives all prefixes announced from your on-premises networks. If you want to limit traffic to
and from any specific VPC, you should consider using Access Control Lists (ACLs) for each VPC.

Which term S describes programs used to control access to computer resources enforce policies audit usage and provide billing information?

Authentication, authorization, and accounting (AAA) is a term for a framework for intelligently controlling access to computer resources, enforcing policies, auditing usage, and providing the information necessary to bill for services.

Which of the following terms describes hiding information from unauthorized third parties?

Encryption is the method by which information is converted into secret code that hides the information’s true meaning. The science of encrypting and decrypting information is called cryptography.

Which term is used to describe a public key cryptography?

Asymmetric cryptography, also known as public-key cryptography, is a process that uses a pair of related keys — one public key and one private key — to encrypt and decrypt a message and protect it from unauthorized access or use.

Which term describes the process of converting ciphertext back into plain text?

Decryption is the process of converting ciphertext back to plaintext. To encrypt more than a small amount of data, symmetric encryption is used. A symmetric key is used during both the encryption and decryption processes.
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