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No, there is no need to share AD or anything else, it is really just to access this floating license server.
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No, there is no need to share AD or anything else, it is really just to access this floating license server.

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I have 2 offices that need a software to be able to access a license server (FlexLM) at the main office. What is my best option to get the 2 offices connected to the license server? VPN? Port forwarding? Another option?
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I have 2 offices that need a software to be able to access a license server (FlexLM) at the main office. What is my best option to get the 2 offices connected to the license server? VPN? Port forwarding? Another option?

Access License Server from 2 locations

A virtual private network (VPN) is a network that uses a public telecommunication infrastructure, such as the Internet, to provide remote offices or travelling users access to a central organizational network securely. VPNs encapsulate data transfers using secure cryptographic methods and other security mechanisms to ensure that only authorized users can access the network and that the data cannot be intercepted.

Cisco PIX is a dedicated hardware firewall appliance; the Cisco Adaptive Security Appliance (ASA) is a firewall and anti-malware security appliance that provides unified threat management and protection the PIX does not. Other Cisco devices and systems include routers, switches, storage networking, wireless and the software and hardware for PIX Firewall Manager (PFM), PIX Device Manager (PDM) and Adaptive Security Device Manager (ASDM).

Cisco

A server is a computer program or a machine that waits for requests from other machines or software (clients) and responds to them. This architecture is called the client–server model. The clients may run on the same computer or may connect to the server over a network. The purpose of a server is to share data or hardware and software resources among clients. Typical computing servers are database servers, file servers, mail servers, print servers, web servers, game servers, and application servers.