IPv6欺骗攻击的防范

IPv6在性能和安全机制方面有了显著提高,但同时也带来新的问题和挑战.通过对欺骗攻击技术研究,分析在IPv6下可能出现的各种欺骗攻击形式,提出了相应的防范措施.     

Underwater Distribution Field of Laser Through Wavy Surface of Water

Aimed at the properties of the absorption and the scattering of photons in the water, the process of sim-ulating by Monte Carlo method is analyzed. According to the slope distribution of wavy surface of water, the dis-tribution field of underwater laser is simulated, and some conclusions about the distribution field of laser through wavy surface in two different conditions are obtained. The characteristics of the distribution of laser in the seawa-ter at the same depth with different water qualities and in the seawater at different depths with the same water quality are computed. The results are significant to the design of airborne oceanic lidar.