These are all for CostOS Workstation machine(s). CostOS Server and SQL DB Server where CostOS databases are hosted do not require Internet connection for any action.
Sometimes CostOS runs behind a firewall. In order for CostOS work seamlessly in these environments the administrators of the firewall must open some outgoing ports.
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CostOS Online Database Service (BCIS, RSmeans etc.)
Training Videos
http://edelivery.nomitech.eu/CostOS/training