Which of the port is require to deploy dlpw from altiris server?
port No. is 443
Check the forum
https://www-secure.symantec.com/connect/forums/which-port-use-deploy-dlp-agent-through-altiris
##Edit##
Article
https://www-secure.symantec.com/connect/articles/summary-ports-used-dlp
Any of the best practise for deploy?
Article for the dlp installation
https://www-secure.symantec.com/connect/articles/installing-dlp-endpoint-agent-altiris