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Blocking personal Gmail and allowing access only to corporate Gmail accounts in IWSVA

    • Updated:
    • 7 Apr 2021
    • Product/Version:
    • InterScan Web Security Virtual Appliance 6.5
    • Platform:
    • CentOS 6 64-bit
Summary

Your company email is hosted on Google and use Gmail as email service. However, you need to block private Gmail access on your network and allow only the corporate Gmail accounts.

Implementing an HTTP Inspection policy in InterScan Web Security Virtual Appliance (IWSVA) can be used to address this scenario.

Details
Public

To block personal Gmail account:

  1. Go to HTTP > HTTP Inspection > Filters.

    Filters

  2. Under the Inspection Filter section, in the Filter Name field, enter Check_GMAIL.

    Create filter name

  3. Tick the Advanced View radio button then copy and paste the following expression in the Patterns field:

    google_act REQ {
    HOST: .*\.google\.com
    EVENT: {
    OP: HEADER_REMOVE
    HEADER: X-GoogApps-Allowed-Domains
    }
    EVENT: {
    OP: HEADER_ADD
    HEADER: X-GoogApps-Allowed-Domains
    VALUE: your-allowed-domain1, your-allowed-domain2
    }
    }

     
    Replace "your-allowed--domain1" or "your-allowed-domain2" with your corporate domain(s).
     

    Advanced View

  4. Navigate to HTTP Inspection > Policies, and make sure the Check_GMAIL filter is set to Allow Scan:

    HTTP inspection policy

  5. Save and deploy the policies to the clients.
  6. Verify that the personal Gmail is blocked by logging in to your private Gmail account. It should look like the following:

Premium
Internal
Partner
Rating:
Category:
Configure
Solution Id:
1117700
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