security category

Conventional network security techniques ( such as firewall, encryption technique etc) have limited defense effects, but all of them belong to the category of static security techniques, their main drawback is that their implementation and maintenance need manual work, and cannot actively follow intruder.

虽然传统的网络安全技术（如防火墙、加密技术等）有一定的防卫作用，但都属于静态安全技术范畴，静态安全技术的缺点是需要人工来实施和维护，不能主动追踪侵入者。

Conventional network security techniques such as firewall and encryption technique have limited defense effects, and all of them belong to the category of static security techniques whose implementation and maintenance need manual work.

虽然传统的防火墙、加密等信息安全技术有一定的防御作用，但都属于静态安全技术范畴，需要人工来实施和维护。

Excluded from this category are administrators, security guards, and overseers.

管理员 、 保安和监工不包括在此类别之内.

The school bus safety is an important part of the public security system, belongs to the category of the management of the government, the government has unshirkable responsibility in safeguarding students' safety and protecting the interests of the students.

校车安全作为公共安全体系的重要组成部分，属于政府的管理范畴，政府在维护学生安全，保障学生的利益中有着不可推卸的责任。

Burglar alarm and security installations [ public works category]

防盗及保安装置〔公共工程类别〕