Which port must be open for successful installation of a SMA?

The successful installation of SonicWall Secure Mobile Access (SMA) requires that TCP 443 be open. This port is essential for establishing secure connections using HTTPS, which is critical for the administration interface and for secure communications between the administration console and client machines. When configurating the SMA, the device relies on secure socket connections for various operations, updates, and communications with users and devices accessing the network.

While TCP 80 is used for HTTP connections, and UDP 4500 is typically associated with IPsec and NAT traversal, they are not required for the SMA installation itself. TCP 443 is the primary port that ensures secure and encrypted communications, thus making it a necessity for the installation and effective functioning of the SMA.