还包括服务保证代理(SA代理)，以测量端到端服务水平协议(SLA)和MPLS环境中网流的益处。

Also covered would be Service Assurance Agent (SA Agent) to measure end to end Service Level Agreements (SLA) and benefits of Netflow in MPLS environment.

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然而，使用服务代理的方法需要每一个发送者通过某些手段来保证他的请求者会路由到相应的端点。

A service broker approach, however, requires that each sender take some action to ensure that his requests are routed to the appropriate endpoint.

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监管机构首先需做的是是找出跨国界跟踪罪犯的方法，保证他们得到应有的惩罚。但由于罪犯们纷纷使用代理服务器，追踪起来并不容易。

A priority for regulators is to find ways of tracking down criminals across borders and ensuring they are punished, a tough task when criminals can use proxy servers to remain anonymous.

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