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There should be no standing admin access in your environment. Enforce Privileged Identity Management for Just-in-Time Access. New remote hires/contractors will need to be exempted from the rule during onboarding, but the this exemption should be removed as soon as the user is registered.

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Restrict Security Registration to Known IP Addresses.Īfter you finish onboarding your current users to Azure MFA, create a conditional access rule that restricts users from enrolling for MFA outside of your office. This second rule is important if your organization creates their own RBAC rules with custom-named security groups.

The second CA rule targets all users, but only targets the Azure Management and Microsoft 365 management portals. The first Conditional Access (CA) rule we create targets all Built-in roles that contain the word “admin” to require MFA on every login. At Infused Innovations, we use a belt and suspenders approach to protect Azure management portals. Number 5 on our top 10 Security Best Practices for Azure, but #1 in our guide for protecting Microsoft 365 is enabling MFA. Enable Conditional Access with MFA for Admin Accounts and Admin Portals. About half of our client projects can be completed with just the Security Administrator role. Your tenant should have fewer than 5 Global Admins.

Regarding RBAC–make a new user or contractor justify why they need Global Admin permissions. If you’re using your desktop email account as a global admin, stop reading this article right now and go create new account “ ”, then setup MFA, and then transfer all your privileged permissions to this new account. If you haven’t yet, take a look at our step-by-step guide to setup Azure Sentinel.

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However, all of your Microsoft 365 security logs are ingested for free and it provides a central management pane for all of your cloud security alerts. Once you get past the free tiers, it’s roughly $5/GB depending on the datacenter you’re in. Pricing for Azure Sentinel is a little complicated. All medium and low level alerts with known exploits should be addressed within 90 days. It’s important to note that while continuous CVE scanning is helpful, you should have a CVE remediation plan that includes remediating all critical and high priority alerts within 30 days of discovery. Bonus: announced at Microsoft Build 2020, the Qualys CVE scanner has been added to ACS for no additional cost. Beware though, Azure DDoS standard protection and Azure Firewall both start at $900/mo minimum. Basically, Azure Security will tell you exactly what you need to enable to stay secured. Benefits include continuous CVE scanning, real-time threat protection, Microsoft Defender ATP licensing, and Azure CIS compliance benchmarking.

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Enable the Azure Security Center Standard Tier.ĪSC is roughly $15/mo/node (it’s billed hourly) plus some additional costs for Azure SQL PaaS instances and Storage Blobs. This will force new hires or contractors to adhere to your network security policies by default. For example, if an engineer creates a new VM, and does not assign an ASG to that VM, then it is blocked by default from accessing other resources on your network. We also suggest using a deny-first policy for Network Security Groups by using Application Security Groups (ASG) to define access. These are the four most common ports that will lead to a successful ransomware attack or brute force attempt, and it’s best to just block them by default. (Don’t just attach it to VM NICs as this will not cover new VMs added to the environment.) This should be your highest priority rule so that no one accidentally overrides it. Then attach the NSG to the Virtual Network. Destination ports to block are 3389, 5985, 5986, and 445 respectively. This should be a priority 100 rule with a source tag of the Internet. Create a Network Security Group (NSG) to block RDP, PowerShell, and SMB from the Internet. Here are the top 10 security best practices for Azure that we deploy for every client at Infused Innovations. Let’s start with the basics and make sure the front door is locked. There are new AI & ML products on the market to address these constantly evolving threats.

Threat landscapes are constantly evolving.

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