Symantec Hosted Endpoint Protection, according to the company, delivers Web-based single-portal deployment and control of "antivirus, antispyware, firewall and host intrusion prevention for desktops and laptops and antivirus and antispyware for file servers."
The always-on (assuming an Internet connection) service is presented as offering a comprehensive security solution for both location-based and mobile endpoints, with updates delivered and new endpoints added either automatically or by administrator download.
The service can be purchased as a separate product or in concert with other Symantec offerings; pricing was not specified in initial releases, although a free trial (registration required) is available here.