要保护AWS Websocket，可以采取以下解决方案：

1. 使用AWS Identity and Access Management (IAM) 控制对Websocket的访问权限。可以创建一个IAM角色，为Websocket设置适当的权限，并将该角色分配给需要访问Websocket的用户或服务。以下是一个创建IAM角色的代码示例：

const AWS = require('aws-sdk');
const iam = new AWS.IAM();

const createRole = async () => {
  try {
    const roleParams = {
      RoleName: 'WebSocketRole',
      AssumeRolePolicyDocument: JSON.stringify({
        Version: "2012-10-17",
        Statement: [
          {
            Effect: "Allow",
            Principal: {
              Service: "apigateway.amazonaws.com"
            },
            Action: "sts:AssumeRole"
          }
        ]
      })
    };

    const role = await iam.createRole(roleParams).promise();
    console.log("Role created:", role);
  } catch (error) {
    console.error("Failed to create role:", error);
  }
};

createRole();

2. 使用AWS Identity and Access Management (IAM) 策略限制对Websocket的操作。可以创建一个IAM策略，指定允许或拒绝执行特定Websocket操作的权限。然后将该策略附加到用户、组织或角色上。以下是一个创建IAM策略的代码示例：

const AWS = require('aws-sdk');
const iam = new AWS.IAM();

const createPolicy = async () => {
  try {
    const policyParams = {
      PolicyName: 'WebSocketPolicy',
      PolicyDocument: JSON.stringify({
        Version: "2012-10-17",
        Statement: [
          {
            Effect: "Allow",
            Action: [
              "execute-api:ManageConnections"
            ],
            Resource: [
              "arn:aws:execute-api:region:account-id:api-id/*/*"
            ]
          }
        ]
      })
    };

    const policy = await iam.createPolicy(policyParams).promise();
    console.log("Policy created:", policy);
  } catch (error) {
    console.error("Failed to create policy:", error);
  }
};

createPolicy();

3. 使用AWS WAF (Web Application Firewall) 防止Websocket遭受恶意攻击。可以创建一个WAF规则，指定允许或拒绝特定IP地址或规则的访问。以下是一个创建WAF规则的代码示例：

const AWS = require('aws-sdk');
const waf = new AWS.WAF();

const createWafRule = async () => {
  try {
    const ruleParams = {
      Name: 'WebSocketRule',
      MetricName: 'WebSocketRule',
      Predicates: [
        {
          DataId: 'IPMatch',
          Negated: false,
          Type: 'IPMatch',
          Value: '192.0.2.0/24'
        }
      ],
      Action: {
        Type: 'BLOCK'
      }
    };

    const rule = await waf.createRule(ruleParams).promise();
    console.log("WAF rule created:", rule);
  } catch (error) {
    console.error("Failed to create WAF rule:", error);
  }
};

createWafRule();

请注意，上述代码示例是使用AWS SDK for JavaScript。您需要安装并配置适当的SDK以便在您的应用程序中使用这些代码。确保替换示例代码中的“region”、“account-id”和“api-id”等占位符为您的实际值。

此外，还可以将AWS Web Application Firewall (WAF) 配置为与AWS CloudFront一起使用，以提供更强大的Websocket保护。