In some embodiments a method comprises receiving a virtual universe request, and determining properties of the virtual universe request. The method can also comprise determining a virtual universe firewall security policy, wherein the virtual universe firewall security policy identifies allowable properties associated with the virtual universe request. The method can also include comparing the properties of the virtual universe request to the properties of the virtual universe firewall security policy, and blocking the virtual universe request based on the comparison of the virtual universe request's properties to the virtual universe firewall security policy's allowable properties.