CFA is designed to function behind your firewall. To ensure its proper operation, the following ports should be open.

Between CFA and Internet

Port TCP/UDP Direction Purpose
122 TCP CFA to support.eversyncsolutions.com Technical support tunnel
       
443 TCP CFA to secure.sosonlinebackup.com Registration
    CFA to license.myeversync.com Licensing
    CFA to billing.myeversync.com Licensing
    CFA to update.evscloud.com Software updates
    CFA to uip.evscloud.com Software updates
       
443, 2300 TCP CFA to r.inf-us-ut-1.myinfrascale.net Replication
    CFA to r.inf-uk-nhm-1.myinfrascale.net Replication
    CFA to r.inf-ca-tor-1.myinfrascale.net Replication

Between CFA and protected machine

In Windows, these ports open automatically during the backup agent installation.

Port TCP/UDP Direction Purpose
9101, 9102, 9103, 9104, 9105 TCP CFA to a client machine Basic CFA communication
9102 UDP Client machine to CFA CFA auto-discovery
139, 445 TCP Client machine to CFA DR image backups (Samba ports)
135, 137, 138 UDP Client machine to CFA DR image backups (Samba ports)

In a Unix-like operating system, you also have to open the following ports:

Port TCP/UDP Direction Purpose
22 TCP CFA to client machine SSH-based management
873 TCP CFA to client machine rsync daemon port

Between CFA and VMware vCenter/ESXi

Port TCP/UDP Direction Purpose
443, 902 TCP CFA to VMware vCenter/ESXi host VMware VM backups

Between CFA and admin machine

Port TCP/UDP Direction Purpose
80, 443 TCP Admin machine to CFA WebGUI interface
22 TCP Admin machine to CFA SSH-based management (optional)