VOIP and data storage in wireless GSM modem over MANET area

VOIP communication done by IP but we know that IP spoofed attacks are the major problems to the current internet and defense communication in VOIP. Most networks today use TCP/IP protocol as the standard to communicate with each other. Each host in the network is uniquely identified by its IP address. In TCP/IP architecture, there is no way to check authorization of source IP. So attackers can easily target source IP address in IP header. In this paper, we have proposed a method to verify authentication of source IP address. We identify the attacks by comparing IP address, corresponding MAC address and BIOS serial number with register database. Detected spoofing was maintained in a log. Our method is very simple and efficient as it will perform in MANET area. Thus it is effective method to identify IP and MAC spoofed attacks. I will construct the secured VOIP communication over MANET area using TCP / IP and storage Data in GSM modem as SMS (inbox). Finally using IP and MAC get fail to prevent spoofing attack then DoS attack prevent using BIOS serial number of clients.