These are rules configured by the System Administrator of the particular Pulse Secure gateway you are connecting to. The message you have is the generic message that you have failed the check without any customization by the System Administrator to let you know why.
The specific reason will be in the logs.
You will need to contact the System administrator or open a help desk ticket with the particular company running that portal. They can then determine why you do not meet their minimum connection standards and tell you what you need to do to the system to meet those standards.
Steve Puluka BSEET - IP Architect - DQE Communications Pittsburgh, PA (Metro-Ethernet & ISP) - http://puluka.com/home