本文介绍了会话发起协议(Session Initiation Protoco1)。根据slP协议镝单． 渡．司扩襞的特点。分析指出r SIP网络瞬面临的一冀典型攻击和安全喊嚼。针对SIP网络面临的安全 险。按照E、D—To—E D和HoP—BY—I{oP分类研究提出了相对应的安全眼务。以及在slP网络中实现这

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