I’m looking for a server based AV-scanner that updates itself by connecting to the Internet. Within the LAN no client PC is allowed to access the Internet but should rather connect to the server via batch-file and get the pattern update from there…
I don’t quite understand your question. Why are you talking about batch files? (I mean, what makes batch files so special - you mean like command-line interface)?
BTW in your scenario, the server does have access to the Internet but the workstations don’t - and you want to protect both the server and the workstations?