Hello,
What version of SEP are you trying to install?
What OS is the SEPM Server and SEP client machine running on?
Prepare computers for remote deployment and management
Modify firewall settings to allow communication between Symantec Endpoint Protection Small Business Edition components:
■ Push deployment ports, used on management servers and clients: TCP 139 and 445, UDP 137 and 138, and TCP ephemeral ports.
■ For legacy communications, open UDP port 2967 on all computers.
■ General communication: TCP 8014 (HTTP)/TCP 443 (HTTPS) for management servers. These are the default ports, and may be customized. See Symantec Endpoint Protection 12.1: How to Change the ports used for communication between the Manager and clients.
Prepare Windows XP computers that are installed in workgroups:
Windows XP computers that are installed in workgroups do not accept remote deployment. To permit remote deployment, disable Simple File Sharing. Note: This limitation does not apply to computers that are part of a Windows domain. Detailed instructions are provided in the following document:http://www.symantec.com/business/support/index?page=content&id=TECH102867
Prepare Windows Vista, Windows Server 2008, or Windows 7 computers:
Windows User Access Control blocks local administrative accounts from remotely accessing remote administrative shares such as C$ and Admin$. Perform the following tasks:
■ Disable the File Sharing Wizard.
■ Enable network discovery by using the Network and Sharing Center.
■ Enable the built-in administrator account and assign a password to the account.
■ Verify that the account has administrator privileges.
Prepare Windows Server 2003 computers for installation using a remote desktop connection:
The Symantec Endpoint Protection Manager requires access to the system registry for installation and normal operation. To prepare a computer to install Symantec Endpoint Protection Manager using a remote desktop connection, perform the following tasks:
■ Configure a server that runs Windows Server 2003 to allow remote control.
■ Connect to the server from a remote computer by using a remote console session, or shadow the console session.
Reference: http://www.symantec.com/docs/TECH163112
Hope that helps!!!!