Whitelist Users and Request Types

Filter which requests are debugged by setting up whitelisting. If you don’t use whitelisting, all events in your org trigger debugging during a debugging session. Whitelist users or request types to focus only on the events that are relevant to the problem you’re debugging.

To access your debug configurations, select the arrow next to the debug icon (), and then select Debug Configurations.

Typically, modifying an Eclipse debug configuration during a debugging session doesn’t affect active debug targets. However, whitelist modifications affect both current and future sessions.
To set up whitelisting, select Whitelisting Enabled in your Remote Apex Debugger configuration.
To filter by user ID, enter a SOQL condition expression in the SELECT id FROM User WHERE field. Or enter a comma-separated list of user IDs in the text field in the User IDs section.
To filter by request type, select one or more entry points, or enter a regular expression in the Entry Point Filter field. For example, to whitelist requests made by the Visualforce page myPage, enter .*/apex/myPage.apexp.

Force.com IDE Developer Guide

Whitelist Users and Request Types