yes its supported but you can't managed SEPM console
System requirements for the Symantec AntiVirus client for Linux
You can install the Symantec AntiVirus client for Linux on unmanaged clients in an environment that contains Symantec Endpoint Protection. The Symantec AntiVirus client for Linux includes real-time antivirus file protection through Auto-Protect scans and file system scans by using manual and scheduled scans.
The following operating systems are supported:
■ Red Hat Enterprise Linux 3.x, 4.x, 5.x
■ SuSE Linux Enterprise (server/desktop) 9.x, 10.x
■ Novell Open Enterprise Server (OES/OES2)
■ Ubuntu 7.x, 8.x, 9.x
■ Debian 4.x, 5.x
■ Fedora 11.x, 12.x
■ VMWare ESX 2.5.x, 3.x
http://www.symantec.com/business/support/index?page=content&id=TECH165172
You can "VOTEUP" this IDEA
linux-unmanaged client
https://www-secure.symantec.com/connect/idea/linux-unmanaged-client