You may tried all methods to make your Linux VM in Virtual Box full screen but nothing worked.Right? I also encountered the same issue, so here is the solution that worked for me. I was using Kali Linux and by default the guest additions comes preinstalled but that didn't solve my problem. I was not getting the window full screen. The below screenshot is before solving the issue. I tried to install the guest additions manually and noticed that the OS was unable to find the kernel headers. Try the following steps to fix. 1) Update the modules and packages. sudo apt update -y && apt upgrade -y && apt dist-upgrade 2) Install the headers. sudo apt install linux-headers-$(uname -r) 3) Now install the guest additions tool.
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.