The server application may be configured with several different options. The networking protocol may be TCP or UDP. Any port number between 1 and 65535 may be selected for communication.
In the US version, the information transmitted may be encrypted by XOR or using 3DES. The 3DES encryption is not available in the international version.
The encryption key is programmable for both types of encryption. When the server program is executed for the first time on a system, it may copy itself to the \WINDOWS\SYSTEM directory on a Windows 9x system, and the \WINNT\SYSTEM32 directory on a Windows NT system. After being copied to the Windows system directory, the program may delete the original copy of itself. The name of the copied file is programmable. The default name of the copied executable begins with UMGR32. The server program may be configured to start itself upon Windows startup by adding an entry to the registry.
The program may also be set to hide itself from a process viewer such as Task Manager in Windows NT. If it is not hidden, the process name may be any name because it is also configurable. Plug-ins to this program may be integrated to add new functionality.
The following is a list of commands the client program may send to the server program:
Symantec Security Response encourages all users and administrators to adhere to the following basic security "best practices":