sharepoint 2010 Accessing online through internet

Before publishing sharepoint 2010 to internet what should be done

we have following architecture

• one web app
• one wfe
• one database server

all are virtual machines on single server

what are the recommendations and best practice

we do have liecese of fore front protection is it enough or we have to have liecese of symantec protection of sharepoint 2010

need the best approach

MCTS,ITIL