There is a command, but you need to gain SSH access to it first, so first of all to gain access to SSH via putty:
http://www.symantec.com/business/support/index?page=content&id=TECH149673
Then the documented commands are here:
http://www.symantec.com/docs/TECH149336
The only reason you would do it this way is if the webserver messed up and couldnt get access to the web portal. The restarting is modular theres no 1 command to restart everything