Hello,
You can run SEP 11 (AV feature) without an internet connection. You can download the .xdb files to another machine, copy them to a flash drive and install to these remote systems.
How to update virus definition files using the Intelligent Updater
http://www.symantec.com/business/support/index?page=content&id=TECH102391&locale=en_US
Moving this thread to the Endpoint Protection forum for getter visibility.