从攻击防范的角度来说，现有的技术仍然不足以抵御大规模的攻击。
On the defense side, current technologies are still unable to withstand large-scale attacks.
主要介绍了DRDOS攻击的概念、原理，提出了针对整个系统的DRDOS攻击防范策略建议。
The concept and principle of DRDOS are introduced and Suggestions of countermeasure against DRDOS in the entire system are described.
ARP欺骗攻击是近来网络行业普遍的现象，文章通过分析ARP协议，给出了ARP攻击防范的几种方法。
ARP spoofing attack is a common phenomenon in recent networking industry, the article analyzes the ARP protocol is given several ways to prevent ARP attack.
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