To install Symantec Endpoint Protection on a Mac client, you export the client
installation package and then deploy the package manually. You can use any
method that you have available in your network: email, a script, URL (FTP or
HTTP), or third-party software such as Apple Remote Desktop.
See “Exporting client installation packages for Mac computers” on page 100 -
ftp://ftp.entsupport.symantec.com/pub/support/documentation/Installation_Guide_SEP11.0.5.pdf
The Mac client install package is automatically exported as a .zip file.
To expand the package to the Apple install format .mpkg, you must use either the
Mac Archive Utility or the ditto command. You cannot use either the Mac unzip
command or any Windows unzip application.
See the Install guide for more info.