Typically, the entry path is a directory of an application (e.g., /cms/admin/), but as an alternative, a regular expression with or without enforced trailing slashes can be defined.
The selection buttons above the text field in Section – Service and Mode defines if the entry path is interpreted as Directory or Regular expression.
Besides the entry path, Airlock Gateways also regards the priority setting in Section – Service and Mode for determining the right mapping.