I have an Intranet Site A and extranet sharepoint site B in two different farms. I want transfer data (list items and doc's) from Intranet SiteA to Extranet SiteB. Please let me what are the possible ways to acomplish this. I am thinking of is CSOM or sharepoint web services like lists.asmx or rest services like listdata.svc. I am not sure to use any of these as they are in different farms. I am supposed to work only through a particular port I guess, does managed client object model work in this case. sorry if I am asking any basic questions.
Please guide me. Any help is highly appreciated.