We have to connect one site to another using leased fiber ( theoretically it's a dark one ) in order to replace a radio link. All servers are in one site. Both location now have Gigabit networks.
Can you please tell me, beside VPN ( which would require some changing in configuration of our devices and application ) what else can be used in order to have a secure communication:
- prevet acces to data transmitted via fiber,
- prevent unauthorized access to our networks through this fiber.
I have searched over Internet and seems that there are some "encryptors" devices ( SafeNet for example ) but the price I have found are high.