Ensure no VPC access control lists allow ingress from 0.0.0.0/0 to port 22

中レベル 1手動レビューibmcloud

説明

VPC access control lists filter all incoming and outgoing traffic in IBM Cloud VPC. An ACL is a built-in, virtual firewall where ACL rules control traffic to and from the subnets, rather than to and from the virtual servers. It is recommended that no ACL allows unrestricted ingress access to port 22. Removing uncontrolled connectivity to remote console services, such as SSH, reduces a server's exposure to risk.

チェック方法

監査方法: 手動レビュー

この推奨事項は自動ではチェックできません。--include-manual を指定すると、スキャン結果にこの手順付きで一覧表示されます。

Using Console: 1. Log in to the IBM Cloud Portal at https://cloud.ibm.com 2. Navigate to the Infrastructure section by clicking on the Menu icon and selecting Infrastructure, Network, Access Control Lists 3. For each access control list, follow these steps: a. Click on the access control list name to view its details. b. In the Inbound Rules tab, examine each rule to ensure it does not contain a port range that includes port 22 and has a Source of ANY IP OR 0.0.0.0/0. A port range value of ALL or a range that includes port 22, such as 0-1024 are inclusive of port 22.

修正方法

修正方法: ガイダンスまたは IaC パッチ

Using Console: 1. Login to the IBM Cloud Portal at https://cloud.ibm.com. 2. Select the Navigation Menu, then click Infrastructure, Network, Access control lists. 3. For the ACL that need to be remediated, perform the following: a. Select the access control list name. b. Identify the Inbound rule to be removed. c. Using the Options icon, select Delete.

プロパティ

オペレーティングシステム: すべて
タグ: access-controlcloudibmcloudnetwork
参照: CIS IBM Cloud Foundations Benchmark v2.0.0 - 6.2.1 Ensure no VPC access control lists allow ingress from 0.0.0.0/0 to port 22