A system for protecting networks from vulnerability exploits comprises a security engine operable to receive a packet destined for a user's network and forward the packet to at least one host virtual machine for processing. The security engine is further operable to forward the stored packet to the user's internal network based upon a result of the processed packet. A method of securing a network from vulnerability exploits is described. The method comprises receiving a packet destined for a user's internal network; forwarding the packet to at least one virtual machine based upon a virtual machine configuration table; processing the forwarded packet on the at least one virtual machine; and releasing the packet to the user's internal network based upon results of the processing.