You need tow bar, base plate, aux brake and lights/turn signals. You may also need a charge line involving MH wiring as some vehicles consume DC power when being towed, model dependent.
Most 4WD Jeeps can be towed with the transfer case in neutral. 2 wheel vehicles are less likely to be towable.
Don't depend on towing guides, owners manuals and even mfg on what can be towed. Mfg's make mistakes that are not always corrected and that includes Jeep. Research various boards and irv2 has IMHO some of the best information on Jeeps.