Can I install Sophos 9.5 along-side other AV products (WebMarshal)?

Hi,

I've enherited a number of web gateway systems running M86 security's WebMarshal product, WebMarshal plugs into certainly locally installed AV products to provide its AV functionality. Currently each of these gateways runs both Norman and Sophos with WebMarshal pluging into both products to provide enhanced AV coverage.

It appears that the Sophos component which WebMarshal plugs into is called SAV Interface but the only way to SAV Interface on a machine is by Installing the full AV product.

I've started the process of upgrading the Sophos AV (via Enterprise Console) from 7.6.21 to 9.5 but can't find anyway to tell 9.5 to install along-side Norman. I've already accidentally removed Norman once and left our gateway exposed - glad I Ghosted off the machine first!

Can anyone help with either:

• How to get SAV Interface onto a machine without the full AV suite?
• How to force Sophos 9.5 to install along-side and existing AV product (Norman in this case)?
• Whether Sophos and M86 are still partnering to provide AV for WebMarshal?

Here's hoping.....

Mike