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If the distributed system is built on the basis of a network in which Servers and/or Clients are behind NAT, then it is recommended to use we recommend using VPN technology for the operation of such system operation. However, this is not isn't a requirement: you can configure the distributed architecture may be configured in the usual way as described in the Configuring the interaction of distributed system components section. In this case, make sure to specify Server the server's external IP address for the Client-to-Server connection and do not don't specify the Client client IP address.

When you configure NAT, the ports that are used by started Axxon PSIM modules are to must be opened — , see The list of TCP ports used in in Axxon PSIM section. Moreover, the ports that are used by MS SQL Server for database synchronization are to must be opened.

If an the ONVIF IP - camera is behind NAT, then proper operation of this camera is not isn't guaranteed. This limitation is due to the special features of the ONVIF protocol.

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