断点映射受到一些限制。
但VPN解决方案中的路由和协议支持会受到一些限制。
But there are limitations to the routing and protocol support within a VPN solution.
在某些情况下，特别是对于免费版本而言，可用的伸缩性和功能的深度和广度会受到一些限制。
In some cases, particularly with the free editions, there are restrictions on the breadth and depth of scalability and functionality available.
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