The primary operational difference between a self-signed certificate and a CA certificate is that with self-signed, a browser will generally give some type of error, warning that the certificate is not issued by a CA. An example of the self-signed certificate error is shown in Figure 1.

This is the same warning message you receive when connecting to the LoadMaster WUI, as the WUI uses a self-signed certificate. Generally, this warning should occur only once per browsing session.