Microsoft best practices for ransomware protection 1) Prepare your recovery plan This is the first phase, planning your recovery in the event of a ransomware attack. This will help the organization in limiting the damage and handle the situation efficiently and reduce the monetary loss. Ensure procedure to make accessing and disrupting the systems harder. Identify and categorize your business-critical systems and apply best practices. Ensure that you have a working backup. For this make use of the Azure Backup services. It also provides built-in monitoring and alerting capabilities to view and configure actions for events related to Azure Backup. Make sure to implement steps to protect the integrity of the backup, implement principle of least privilege and adding an extra layer of authentication for critical operations, you're prompted to enter a security PIN before modifying online backups. 2) Limit the scope of the damage Assume breach scenario. In the event of a successf
Modular Policy Framework (MPF) configuration defines set of rules for applying firewall features, such as traffic inspection, QoS etc. to the traffic transiting the firewall
There are 3 main components in creating a MPF.
1) Class Map
Class map is used to identify the type of traffic. This can be done by creating an ACL.
2) Policy Map
Policy Map specifies what action the ASA should take against the traffic identified by the Class Map.
3) Service Policy
Finally Service policy specifies where to apply it. The policy is applied to an interface or Globally.
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access-list OUTSIDE-TO-INSIDE permit tcp any any eq ftp
<--- The above ACL will allow FTP traffic. This ACL can be different than the Interface ACL--->
class-map FTP-CLASS-MAP
match access-list OUTSIDE-TO-INSIDE
<--- The class map FTP-CLASS-MAP will look for the FTP traffic based on ACL --->
policy-map FTP-POLICY-MAP
class FTP-CLASS-MAP
inspect ftp
<--- What action need to be done? here inspect the ftp. --->
service-policy FTP-POLICY-MAP interface outside
<--- Apply the policy in the outside interface --->
The above illustration is just an example. MPF enables the administrator to assign different network policies to different traffic flows in a flexible and granular manner.
There are 3 main components in creating a MPF.
1) Class Map
Class map is used to identify the type of traffic. This can be done by creating an ACL.
2) Policy Map
Policy Map specifies what action the ASA should take against the traffic identified by the Class Map.
3) Service Policy
Finally Service policy specifies where to apply it. The policy is applied to an interface or Globally.
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Sample Illustration
Consider the following Command lines.access-list OUTSIDE-TO-INSIDE permit tcp any any eq ftp
<--- The above ACL will allow FTP traffic. This ACL can be different than the Interface ACL--->
class-map FTP-CLASS-MAP
match access-list OUTSIDE-TO-INSIDE
<--- The class map FTP-CLASS-MAP will look for the FTP traffic based on ACL --->
policy-map FTP-POLICY-MAP
class FTP-CLASS-MAP
inspect ftp
<--- What action need to be done? here inspect the ftp. --->
service-policy FTP-POLICY-MAP interface outside
<--- Apply the policy in the outside interface --->
The above illustration is just an example. MPF enables the administrator to assign different network policies to different traffic flows in a flexible and granular manner.