AWS Network Load Balancer提供的SSL穿透功能允许将SSL流量直接传递到后端实例，从而使实例能够处理和解密SSL流量。以下为示例代码：

1. 首先在AWS控制台中创建一个网络负载均衡器，并将协议设置为TCP。

2. 在目标组中添加后端实例，并选择协议和端口。

3. 创建一个Lambda函数，该函数将在目标组中运行，并将流量路由到实例。示例代码如下：

import json
import boto3

elbv2 = boto3.client('elbv2')

def lambda_handler(event, context):
    # Extract values from the event
    target_group_arn = event['target_group_arn']
    request_context = event['requestContext']
    elb_ip = request_context['elb']['targetGroupArn'].split('/')[1]
    connection_id = request_context['connectionId']
    domain_name = request_context['domainName']
    stage = request_context['stage']

    # Generate the response object
    response = {
        'isBase64Encoded': False,
        'statusCode': 200,
        'headers': {
            'Content-Type': 'application/json'
        },
        'body': ''
    }

    # Construct the URL to send to the backend
    url = 'https://' + domain_name + '/' + stage

    # Send the request to the backend
    try:
        response = elbv2.forward_connection(
            TargetGroupArn=target_group_arn,
            TargetGroupArn=elb_ip,
            ConnectionId=connection_id,
            Request={
                'Method': request_context['httpMethod'],
                'Path': request_context['path'],
                'HttpVersion': request_context['httpVersion'],
                'Headers': dict(request_context['headers']),
                'Body': ''
            },
            PreserveClientIp=True,
            RetryOnHttp502=True
        )
    except Exception as e:
        response['statusCode'] = 500
        response['body'] = json.dumps({'error': str(e)})
        return response

    return response

4. 使用Lambda函数、API网关将请求转发到目标组和后端实例。

通过以上步骤，AWS网络负载均衡器的SSL穿透功能即可完成配置。