Issue
During installation EVnearSync Core will create firewall rules on the local host to allow communication between EVnearSync agents, and the Core. These ports may also need to be opened on a proxy or firewall between the machines in the network environment, this article describes those ports.
Solution
The following ports are used for communication within EVnearSync:

Source Destination Port(s) Description
Agents Core 4343 (HTTP) Communication between the agent and the core.
Core Administrator/Operator 80 Communication between the Operator/Administrator and the web interface/Core.
Agents Remote storage TCP 445 (CIFS) To be able to read and write data being replicated.
Agents SQL Server TCP 1433 Communication from Agent to both EV SQL and EVnearSync SQL Databases.
Core SQL Server TCP 1433 Communication from Core to both EV SQL and EVnearSync SQL Databases.
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