In the San Bernardino National Forest, you can camp at designated campgrounds, and dispersed camping is also allowed in certain areas. However, you must follow the forest's rules and regulations, such as camping at least 200 feet away from water sources and trails, and practicing Leave No Trace principles. It's important to check for any fire restrictions, as well as obtain a California Campfire Permit if you plan to have a campfire or use a portable stove. Always check with the local ranger station for the most up-to-date information on camping restrictions and regulations.