ASM Policy

[Preet_pk]

Hi,

We have multiple web applications running on a single Virtual server with host/domain based pool routing.

For eg:

red.lab.ae

blue.labe.ae

irule:

when HTTP_REQUEST {
switch [string tolower [HTTP::host]] {
red.lab.ae {
pool Red_Pool1 }

green.lab.ae {
pool Green_Pool1 }

}
}

Just want to know if i need to apply ASM policy, do i need to apply seperate ASM policy one for "red.lab.ae" & "green.lab.ae" or a single ASM policy for both domain.

Will ASM policy works from top to bottom?

[CA_Valli]

Hello, you can use ASM::policy syntax to attach a different policy.

• This requires that you have at least a minimal ASM Policy attached to the Virtual Server for the ASM commands to become available.
• If you don't use ASM::enable or ASM::disable syntax, default policy applied to VS will be applied to traffic

when HTTP_REQUEST {
  switch [string tolower [HTTP::host]] {
    red.lab.ae {
      pool Red_Pool1
      ASM::enable <policy1> 
    }
    green.lab.ae { 
      pool Green_Pool1 
      ASM::enable <policy2>
    }

  }
}

Regarding your question about using different policies, it very much depends on the portals you're protecting.

I would recommend doing so if the application are very different, as a single "do it all" policy will loosen up the protection because you'll need to enable a lot of things required to make one portal work that might expose threats on the other one, and vice versa.