blocks|key|4810361|text|NAT网关是用于外发流量的堡垒，您需要访问内网EC2实例，然后需要在同一私有网络内的公网子网上进行堡垒。或VPN连接或AWS系统管理器。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4810362|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

NAT Gateway is for outgoing traffic only.if you have to access the private EC2 instance then you need bastion on public subnet in same VPC.
OR VPN to connect or AWS system manager.

blocks|key|4810442|text|有三个常用的选项：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4810443|4810444|在公有子网中使用bastion+host。首先使用ssh连接到堡垒，然后使用ssh从堡垒连接到私有ec2。这通常需要将私有ssh密钥复制到堡垒，以便您可以在那里使用它ssh到私有子网。|unordered-list-item|offset|length|4810445|4810446|4810447|使用SSM+session+manager。这可能是最简单的设置选项，因为您已经在使用NAT，而且它需要special+instance+role.|4810448|4810449|4810450|使用VPN。可能是最复杂的解决方案，但也使用了nevertheless.|4810451|4810452|entityMap|0|LINK|mutability|MUTABLE|url|https://aws.amazon.com/quickstart/architecture/linux-bastion/|1|https://docs.aws.amazon.com/systems-manager/latest/userguide/session-manager.html|2|https://docs.aws.amazon.com/systems-manager/latest/userguide/getting-started-add-permissions-to-existing-profile.html|3|https://docs.aws.amazon.com/vpn/latest/clientvpn-admin/what-is.html^0|0|0|8|C|0|0|0|0|2|J|1|1G|L|2|0|0|0|2|3|3|0|0^^$0|@$1|2|3|4|5|6|7|14|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|15|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|16|8|@]|9|@$F|17|G|18|1|19]]|A|$]]|$1|H|3|-4|5|6|7|1A|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|1B|8|@]|9|@]|A|$]]|$1|J|3|K|5|E|7|1C|8|@]|9|@$F|1D|G|1E|1|1F]|$F|1G|G|1H|1|1I]]|A|$]]|$1|L|3|-4|5|6|7|1J|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|1K|8|@]|9|@]|A|$]]|$1|N|3|O|5|E|7|1L|8|@]|9|@$F|1M|G|1N|1|1O]]|A|$]]|$1|P|3|-4|5|6|7|1P|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|1Q|8|@]|9|@]|A|$]]]|R|$S|$5|T|U|V|A|$W|X]]|Y|$5|T|U|V|A|$W|Z]]|10|$5|T|U|V|A|$W|11]]|12|$5|T|U|V|A|$W|13]]]]

There are three options that are commonly used:
<ul>
<li>Use a <a href="https://aws.amazon.com/quickstart/architecture/linux-bastion/" rel="nofollow noreferrer">bastion host</a> in a public subnet. First you ssh to the bastion, and then ssh from the bastion to the private ec2. This usually requires copying private ssh key to the bastion so that you can use it there to ssh to the private subnet.
</li>
<li>Use a <a href="https://docs.aws.amazon.com/systems-manager/latest/userguide/session-manager.html" rel="nofollow noreferrer">SSM session manager</a>. This probably would be the easiest option to setup as you already are using NAT and it requires <a href="https://docs.aws.amazon.com/systems-manager/latest/userguide/getting-started-add-permissions-to-existing-profile.html" rel="nofollow noreferrer">special instance role</a>.
</li>
<li>Use a <a href="https://docs.aws.amazon.com/vpn/latest/clientvpn-admin/what-is.html" rel="nofollow noreferrer">VPN</a>. Probably the most complex solution but also used nevertheless.
</li>
</ul>

blocks|key|4950427|text|由于该实例位于私有子网中，因此您需要使用一种方法来私有地连接到该实例。有许多选项可供选择，它们的成本和复杂性各不相同，因此请确保您先阅读每一个选项。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4950428|VPN+-使用此方法可将托管|4950429|Site-to-site+VPN添加到您的私有网络，并通过硬件配置连接到您的内部部署。您的安全组将需要允许您的本地CIDR范围允许connection.|unordered-list-item|offset|length|4950430|Client+VPN+-使用亚马逊网络服务解决方案，或使用browser.|4950431|SSM+Sessions+Manager中的第三方(如OpenVPN)通过本地程序或marketplace中的HTTPS建立连接-通过亚马逊网络服务控制台或使用命令行界面(描绘为bash接口)访问EC2实例，而无需使用OpenVPN进行身份验证。相反，IAM用于控制权限和access.|4950432|Bastion+host+-一个公共实例，您可以在访问您的hsot之前使用SSH进行连接，或者作为命令的代理连接到该实例。|4950433|4950434|entityMap|0|LINK|mutability|MUTABLE|url|https://docs.aws.amazon.com/vpn/latest/s2svpn/VPC_VPN.html|1|https://docs.aws.amazon.com/vpn/latest/clientvpn-admin/what-is.html|2|https://docs.aws.amazon.com/systems-manager/latest/userguide/session-manager.html|3|https://aws.amazon.com/marketplace|4|https://docs.aws.amazon.com/quickstart/latest/linux-bastion/architecture.html^0|0|0|0|G|0|0|0|A|1|0|0|K|2|16|B|3|0|0|C|4|0|0^^$0|@$1|2|3|4|5|6|7|15|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|16|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|17|8|@]|9|@$G|18|H|19|1|1A]]|A|$]]|$1|I|3|J|5|F|7|1B|8|@]|9|@$G|1C|H|1D|1|1E]]|A|$]]|$1|K|3|L|5|F|7|1F|8|@]|9|@$G|1G|H|1H|1|1I]|$G|1J|H|1K|1|1L]]|A|$]]|$1|M|3|N|5|F|7|1M|8|@]|9|@$G|1N|H|1O|1|1P]]|A|$]]|$1|O|3|-4|5|6|7|1Q|8|@]|9|@]|A|$]]|$1|P|3|-4|5|6|7|1R|8|@]|9|@]|A|$]]]|Q|$R|$5|S|T|U|A|$V|W]]|X|$5|S|T|U|A|$V|Y]]|Z|$5|S|T|U|A|$V|10]]|11|$5|S|T|U|A|$V|12]]|13|$5|S|T|U|A|$V|14]]]]

As the instance is in a private subnet you will need to use a method to connect to this privately. There are many options to choose from, they will vary in cost and complexity so ensure you read each one first.
<ul>
<li><a href="https://docs.aws.amazon.com/vpn/latest/s2svpn/VPC_VPN.html" rel="nofollow noreferrer">Site-to-site VPN</a> - Using this method a managed VPN is added to your VPC and connected to your on-premise via hardware configuration. Your security groups will need to allow your on-premise CIDR range(s) to allow connection.</li>
<li><a href="https://docs.aws.amazon.com/vpn/latest/clientvpn-admin/what-is.html" rel="nofollow noreferrer">Client VPN</a> - Using either AWS solution, or a third party from the <a href="https://aws.amazon.com/marketplace" rel="nofollow noreferrer">marketplace</a> (such as OpenVPN) you can establish a connection using either a local program or HTTPS in your browser.</li>
<li><a href="https://docs.aws.amazon.com/systems-manager/latest/userguide/session-manager.html" rel="nofollow noreferrer">SSM Sessions Manager</a> - Access your EC2 instance via the AWS console or using the CLI, portrayed as a bash interface without using SSH to authenticate. Instead IAM is used to control permissions and access.</li>
<li><a href="https://docs.aws.amazon.com/quickstart/latest/linux-bastion/architecture.html" rel="nofollow noreferrer">Bastion host</a> - A public instance that you can connect to as an intermediary either using SSH to connect to before accessing your hsot, or as a proxy for your commands.</li>
</ul>

When you set up an EC2 instance in a private subnet to access the internet through a NAT gateway (with all the necessary routing and association through route table), how do you go about SSH'ing into the private EC2?
For example, EC2 in the NAT Gateway public subnet and making a connection through the public EC2 to the private EC2.

NAT Gateways-how do you go about SSH'ing into the private EC2?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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当您在私有子网中设置EC2实例通过NAT网关访问internet (通过路由表进行所有必要的路由和关联)时，如何通过SSH进入私有EC2？例如，NAT网关公有子网中的EC2，通过公网EC2连接到内网EC2。

问NAT网关-如何通过SSH进入私有EC2？
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