Configure Communication Ports

The SD Branch appliances use HTTPS Hypertext Transfer Protocol Secure. HTTPS is a variant of the HTTP that adds a layer of security on the data in transit through a secure socket layer or transport layer security protocol connection. WebSockets and IPsec Internet Protocol security. IPsec is a protocol suite for secure IP communications that authenticates and encrypts each IP packet in a communication session. tunnels for secure communication.

  • The HTTPS WebSockets is used for the management traffic; that is, for communication between Aruba Central and Aruba gateways.
  • The IPsec tunnel is used for communication between Branch Gateways and VPNCs.

For a complete list of domain URLs Uniform Resource Locator. URL is a global address used for locating web resources on the Internet., ports, and protocols that you must allow over a network firewall Firewall is a network security system used for preventing unauthorized access to or from a private network., see Opening Firewall Ports for Device Communication.

When configuring ACLs Access Control List. ACL is a common way of restricting certain types of traffic on a physical port. to allow traffic over a network firewall, Aruba recommends that you use the domain names instead of IP addresses. For more information on ACLs, see Firewall Policies and ACLs.
For Branch Gateways to set up IPsec tunnel with the VPNCs, the UDP User Datagram Protocol. UDP is a part of the TCP/IP family of protocols used for data transfer. UDP is typically used for streaming media. UDP is a stateless protocol, which means it does not acknowledge that the packets being sent have been received. 4500 port must be open. For more information on firewall ports required for communication between Aruba gateways and other network elements, see ArubaOS User Guide.