Redirecting URLs to your ProxySG appliance

You can add an action to your Symantec Messaging Gateway content filtering policies to redirect all browser requests to your Symantec Blue Coat ProxySG appliance. If a message triggers a verdict for the policy, the action adds the ProxySG URL to the beginning of every clickable URL in the message. When a user clicks a link, the computer redirects the browser request to the ProxySG URL. Your ProxySG policies then determine whether the user gets access to the linked webpage.
Your users' computers and browsers must be set up to communicate with the ProxySG appliance. In addition, you must define policies on ProxySG to evaluate and process the browser requests. The ProxySG default is to refuse access, so all redirected browser requests from SMG will fail until you define the relevant policies. For instructions on how to set up ProxySG policies, refer to the ProxySG documentation.
  1. To send browser requests to Symantec Secure Web Gateway (ProxySG),
    in Control Center, from the
    Content
    >
    Policies
    >
    Email
    page, click
    Add
    to create a new content filtering policy. Or select a policy and click
    Edit
    to add ProxySG redirection to an existing content filtering policy.
  2. Under
    Conditions
    , from the
    Apply to
    menu, select
    Inbound messages
    .
    Never apply a policy that redirects to Proxy SG to outbound messages. Outbound recipients don't have permission to access to your ProxySG appliance, so the links with modified URLs will fail.
  3. In the
    Actions
    panel, click
    Add
    .
  4. In the
    Configure An Action
    dialog box, select
    Modify clickable URLs in message
    .
  5. In the
    Type of service
    field, select
    Web Service (ProxySG)
    .
  6. In the
    Proxy URL
    field, enter the URL of your ProxySG appliance in the format
    https://FQDN/
    .
    For example:
    https://mycompanyproxy.com/
    The URL must include the fully-qualified domain name (FQDN) of your ProxySG appliance, and must end with a forward slash (/).
  7. Click
    Add Action
    .
    When a message triggers a verdict, Symantec Messaging Gateway adds the
    Proxy URL
    to the beginning of all the URLs in the message. When a recipient clicks a modified link, the
    Proxy URL
    routes the browser request to your ProxySG.
  8. To test the
    Proxy URL
    , type it into the address line of a browser. Then add a URL that you know is valid to the end of the
    Proxy URL
    , and press
    Enter
    .
    For example:
    If your
    Proxy URL
    is
    https://mycompanyproxy.com/
    and the URL is
    https://www.symantec.com
    enter
    https://mycompanyproxy.com/https://www.symantec.com
    into your browser.
    If the
    Proxy URL
    is correct, the browser displays the Symantec Corporation home page.
    The test computer must be set up to communicate with your ProxySG appliance, and the ProxySG must have a policy to allow this access.
  9. When you finish creating or editing the policy, click
    Save
    .
  10. To create a content filtering policy that applies ProxySG protections to all inbound messages,
    on the
    Email Content Filtering Policies
    page, click
    Add
    .
  11. Select the
    Blank
    template.
  12. In the
    Settings
    panel, disable
    Track violations of this policy in the dashboard and reports
    .
  13. In the
    Conditions
    panel, from the
    Apply to
    menu, select
    Inbound messages
    .
  14. Click
    Add
    to add a new condition.
  15. Select
    For all messages
    , and then click
    Add Condition
    .
  16. In the
    Actions
    panel, click
    Add
    . Follow the steps in the previous procedure to add the
    Modify clickable URLs
    action.
  17. Apply the policy to all policy groups and then click
    Save
    .
  18. On the
    Email Content Filtering Policies
    page, drag the policy to the top of the list.