Ensure no workspace network security groups allow inbound traffic from the Internet allowing access from 0.0.0.0/0 to telnet port (23) or RSH port (514)

中レベル 1手動レビューibmcloud

説明

It is recommended the inbound traffic from the Internet to telnet port (23) or remote shell (RSH, port 514) is restricted. These protocols are insecure/deprecated and should not be used in general.

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。

Perform the following tasks to determine if the account is configured as prescribed: 1. Login to the IBM Cloud Portal at https://cloud.ibm.com and select Power Virtual Server user interface. 2. In the navigation panel, click Workspaces, then select the workspace that contains the Network Security Groups to review and open the Workspace details page. 3. From the workspace details page, click view virtual servers. 4. In the left navigation panel, expand Networking and then select Network security groups. For each NSG perform the following: a. Select the access control list name b. Ensure no Inbound Rule exists that has a port range that includes ports 23 or 514 and has a Source of 0.0.0.0/0.

修正方法

修正方法: ガイダンスまたは IaC パッチ

1. Login to the IBM Cloud Portal at https://cloud.ibm.com and select Power Virtual Server user interface. 2. In the navigation panel, click Workspaces, then select the workspace that contains the Network Security Groups to review and open the Workspace details page. 3. From the workspace details page, click view virtual servers. 4. For each network security group, perform the following: a. Select the network security group name. b. Identify the Inbound rule to be removed, then 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 - 9.7 Ensure no workspace network security groups allow inbound traffic from the Internet allowing access from 0.0.0.0/0 to telnet port (23) or RSH port (514)