Ensure no workspace network security groups allow inbound traffic from the Internet from 0.0.0.0/0 to any fileshare port

中等級 1人工審核ibmcloud

說明

It is recommended that inbound traffic from the Internet to file sharing application ports is restricted, following the principle of least privilege access. These ports are NetBIOS (139), SMB (445), FTP (21). Removing uncontrolled connectivity from the Internet to file sharing services, such as SMB, reduces a PowerVS resources’ risk exposure.

檢查方式

稽核方法: 人工審核

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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 139, 445 or 21 and has a Source of 0.0.0.0/0.

修補方式

修補方法: 操作指南或基礎設施修補檔

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.

屬性

作業系統: 不限
標籤: cloudibmcloudnetwork
參考資料: CIS IBM Cloud Foundations Benchmark v2.0.0 - 9.6 Ensure no workspace network security groups allow inbound traffic from the Internet from 0.0.0.0/0 to any fileshare port