spotn.地点；场所；职位；污点；斑点；少量；聚光灯；插播节目adj.现场的；现货的；插播的v.（使）产生污渍；玷污；认出；用灯光照射spot outv.除去污点

1. Several facets such as hardware, software and network, which affect security of IPP print, are analyzed.Some effective countermeasures are also given.
   同时从软硬件及网络等方面分析了影响嵌入式网络打印系统安全的各种因素，并且提出了几种有效的防御方法。