1. A method of decrypting an Internet Protocol Security (IPSec)-encrypted multicast communication, comprising: receiving an multicast communication comprising a header and an Internet Protocol Security (IPSec)-encrypted data payload via multicast transmission at a device having IPSec decryption capabilities; modifying the received multicast communication to appear as a unicast communication to the IPSec decryption capabilities by modifying address information in the header of the received multicast communication; and decrypting the data payload of the modified communication using IPSec decryption capabilities.