I am preparing for CCNA Security and want to ask, how could I obtain ASAV and CCP? What is the best way to practice for CCNA Security? I am currently using gns3, is it enough to prepare for the CCNA Security exam? Do I need to buy the ASAV and CCP from CISCO? If yes, how? and I am a regular networking engineering working in a company that do not have any relationship with CISCO...!