Hassan Latif - south Tehran eslamic azad university, iran
Seied Ahmad Olammai - south Tehran eslamic azad university, iran
Mohammad Reza Omman - Save energy nonprofit Institution, iran

The aim of Research say the need of Society to important issue for security, IPv6 and more attention to it before its spread. The research Items such as identifying attacks, accessible without authentication; the Manipulation of header and formatting manipulation, stealing information in layers 3 and 4.the attack of protocols ARP and DHCP reinforced attacks broadcast , Routing attacks, attacks by viruses and worms are entered into the system, and also to attacks transmission, translation in mechanisms tunneling check and the model of treatment with them in IPv4 and IPv6 shows gives. the attacks are three class in IPv6 , including attacks that occur only in IPv6, the attacks are common that they occured in IPv6 and IPv4.and the attacks occured just in IPv4. in here we have shown with simulate common attacks on IPv4 and IPv6 . that IPv6 is vulnerable too and it dont has a complete security.

attacks, IPv6, security, IPv4, simulation