70-298 Section 3.3 Q&A Bonus Answer
How can you offload IPSec workload from CPU to another device?
Answer:
Some Network cards can encrypt Network traffic using onboard processor, Here is just one example and No I have not used this or any other brand.
http://interfacemasters.com/products/SSL_IPSec_cards.html
Read the complete post at http://smsug.ca/blogs/garth_jones/archive/2008/07/16/70-298-section-3-3-q-amp-a-bonus-answer.aspx