What does a successful SSL VPN connection require from the client-side configuration?

A successful SSL VPN connection indeed requires the correct SSL VPN port to be configured on the client-side. The SSL VPN typically operates over standard ports such as 443 for HTTPS; thus, ensuring that the client is attempting to connect through the correct port is crucial for successfully establishing the connection. If the port is not correctly identified, the connection attempt can fail regardless of other configurations.

While an active firewall rule permitting VPN connections is necessary, this relates more to the server-side configuration and does not directly affect the client’s ability to reach the VPN. Similarly, user credentials associated with the VPN configuration are critical for authentication post-connection but do not influence the establishment of the SSL tunnel itself from the client-side perspective. Lastly, a properly configured VPN gateway address is fundamental; however, it pertains more to ensuring the client can point to the correct server, rather than the specific configurations on the client side required for the SSL establishment process. Thus, the most directly relevant requirement from a client-side configuration view is indeed having the correct SSL VPN port configured.