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Introduction:
The convergence of identity and network access is the cornerstone of modern Zero-Trust security. As organizations migrate to cloud-centric models, the ability to implement and verify these principles from the command line becomes a critical skill for administrators. This guide provides the practical CLI tools needed to transition from strategy to hands-on implementation.
Learning Objectives:
- Master key PowerShell and Bash commands for managing Microsoft Entra ID and network security.
- Learn to audit and verify security configurations for identity and access management (IAM).
- Implement automation scripts to enforce Zero-Trust policies across your environment.
You Should Know:
1. Connecting to and Querying Microsoft Entra ID
The first step in managing your identity landscape is establishing a secure connection and extracting vital information. Microsoft Graph PowerShell SDK is the modern tool for this task.
Install the Microsoft Graph PowerShell module Install-Module Microsoft.Graph -Force Connect to Microsoft Graph with appropriate permissions Connect-MgGraph -Scopes "User.ReadWrite.All", "Group.ReadWrite.All", "Directory.ReadWrite.All" List all users in the directory Get-MgUser -All | Select-Object DisplayName, UserPrincipalName, Id
Step-by-step guide: This series of commands first ensures the necessary module is installed. The `Connect-MgGraph` cmdlet authenticates your session with the specified permissions, which are necessary for reading and writing directory objects. The final command, Get-MgUser, retrieves a list of all users, which is fundamental for auditing who has access to your environment. Always ensure you connect with the least privileged permissions necessary for your task.
2. Auditing User Sign-Ins and Risk Events
Proactive security requires monitoring for anomalous sign-in activity. Microsoft Graph provides extensive auditing capabilities.
Get the last 10 sign-in logs with interactive user sign-ins
Get-MgAuditLogSignIn -Filter "status/errorCode eq 0" -Top 10 | Where-Object {$_.appDisplayName -eq "Windows Sign In"}
Get risky user detections
Get-MgRiskyUser -All | Where-Object { $_.RiskLevel -ne "none" } | Format-Table UserPrincipalName, RiskLevel, RiskDetail
Step-by-step guide: The first command filters the sign-in logs for successful (errorCode eq 0) interactive sign-ins, providing a clear view of user authentication patterns. The second command queries Microsoft Entra ID Protection’s risky users list, highlighting accounts flagged for suspicious activity. Regularly running these audits helps identify potential account compromises early.
3. Configuring Conditional Access Policies Programmatically
Conditional Access is the enforcement engine of Zero Trust. While complex policies are often GUI-built, you can review settings via CLI.
List all Conditional Access policies Get-MgIdentityConditionalAccessPolicy | Select-Object DisplayName, State Get details of a specific policy $Policy = Get-MgIdentityConditionalAccessPolicy -Filter "displayName eq 'Require MFA for Azure Management'" $Policy.Conditions
Step-by-step guide: These commands allow you to inventory all Conditional Access policies and drill down into the conditions of a specific one. This is crucial for verifying that intended security controls (like MFA requirements for admin portals) are correctly applied and enabled (State is enabled). Automation can be built around these get commands to export and audit policy configurations.
4. Hardening Security Defaults and Identity Secure Score
Microsoft provides a curated set of security baselines and a metric to gauge your posture.
Check if Security Defaults are enabled (Azure AD Free tier) (Get-MgPolicyIdentitySecurityDefaultEnforcementPolicy).IsEnabled Get the current Identity Secure Score (Get-MgSecuritySecureScore -Top 1).CurrentScore
Step-by-step guide: The first command checks the status of Security Defaults, a simple way to enable basic security measures like requiring MFA for admins. The second command fetches your organization’s Secure Score, a numerical summary of your security configuration relative to Microsoft’s recommendations. Tracking this score over time is an excellent way to measure improvement.
5. Network Security Group (NSG) Audit and Hardening
Network access control in Azure is governed by NSGs. Ensuring they are tight is key to Zero Trust.
Connect to Azure AZ module
Connect-AzAccount
Get all NSGs in a resource group
Get-AzNetworkSecurityGroup -ResourceGroupName "Prod-RG" | ForEach-Object { $_.Name }
Get effective security rules for a specific VM's network interface
Get-AzEffectiveNetworkSecurityGroup -NetworkInterfaceName "vm01-nic" -ResourceGroupName "Prod-RG"
Step-by-step guide: After authenticating to your Azure subscription, these commands list all NSGs in a given resource group and then show the effective rules applied to a specific network interface. This helps identify overly permissive rules (e.g, allowing RDP from the public internet) that may conflict with a least-privilege access model.
6. Automating Compliance with DevOps Practices
Integrating security checks into deployment pipelines ensures continuous compliance.
Example Azure CLI command in a pipeline task to check for storage accounts allowing public blob access
az storage account list --query "[?allowBlobPublicAccess == <code>true</code>].{Name:name}" --output tsv
Bash one-liner to check for expired certificates on a Linux server
find /etc/ssl/certs -name ".pem" -exec openssl x509 -checkend 86400 -noout -in {} \; -print | grep "will expire"
Step-by-step guide: The first command uses Azure CLI in a pipeline to query for non-compliant storage accounts, which could be a security risk. The second command is a Linux bash one-liner that scans for SSL certificates on a local machine that will expire in the next 24 hours (86400 seconds). Automating these checks prevents configuration drift and vulnerabilities.
7. Investigating and Responding to Incidents
When a threat is detected, speed is critical. These commands help in rapid investigation and response.
Immediately revoke a user's active sessions (requires Azure AD P1/P2) Revoke-MgUserSignInSession -UserId "3bb5aac8-1234-5678-9abc-7891d10a1234" Block a user's sign-in ability Update-MgUser -UserId "[email protected]" -AccountEnabled:$false Isolate a compromised Azure VM by adding it to a quarantine NSG $Nic = Get-AzNetworkInterface -ResourceGroupName "Prod-RG" -Name "compromised-vm-nic" $Nic.NetworkSecurityGroup = $(Get-AzNetworkSecurityGroup -ResourceGroupName "Prod-RG" -Name "Quarantine-NSG") Set-AzNetworkInterface -NetworkInterface $Nic
Step-by-step guide: This incident response playbook demonstrates key actions. `Revoke-MgUserSignInSession` invalidates all of a user’s refresh tokens, forcing re-authentication. Disabling the account prevents any new sign-ins. The Azure AZ commands then network-isolate a potentially compromised virtual machine by reassigning it to a highly restrictive NSG, containing the threat.
What Undercode Say:
- Automation is Non-Negotiable: The scale of modern cloud environments makes manual security checks obsolete. The provided commands must be scripted and integrated into CI/CD pipelines for continuous compliance monitoring.
- Visibility is the First Step to Defense: You cannot protect what you cannot see. The extensive auditing and listing commands are not just informational; they are the foundational step for all subsequent security hardening and incident response.
The shift towards a unified identity and network command line interface represents the operationalization of Zero-Trust principles. Relying solely on GUI consoles is no longer sufficient for enterprise-grade security. The future belongs to admins who can wield PowerShell and Bash with the same proficiency as they understand security policies, allowing them to move at the speed of the cloud and respond to threats with automated precision. The commands outlined here are the building blocks for that capability.
Prediction:
The manual, GUI-driven approach to security configuration will be completely phased out within 5 years, replaced by policy-as-code and automated compliance pipelines. Security breaches will increasingly be attributed to organizations that failed to make this transition, as human speed cannot match automated threat propagation. The ability to execute and automate the commands above will become a baseline requirement for security and infrastructure roles.
🎯Let’s Practice For Free:
IT/Security Reporter URL:
Reported By: https://lnkd.in/p/dcK7H4Ru – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
