Hi Akshay,
You would need a antivirus server installation required if you activate virus scan profile
Sample URL
Also it can be virus scan bridge
http://www.bowbridge.net/fileadmin/collateral/Documentation/internal/BowBridge_AVBSAP20_UG_UNIX.pdf
1) Generally Virus Scan profile needs to be activated if Gateway is directly exposed to internet General Landscape for Mobile Devices is
In the following architecture you don't need a virus scan profile as Gateway is behind with Enterprise Services,
2) For these type of architecture you need a Virus Scan Profile
Regards
Gaurav Ahluwalia

