The UMD Alerts System is a mass, urgent notification system, comprised of a variety of methods by which the University can notify students, faculty and staff of an active, major campus emergency:

• ShadowsocksR | 很文博客:目前ShadowsockR电脑板更新到的最新版本是v4.7.0，安卓版应该是v3.4.0.7，其余版本我没存不知道。 二、原理 GFW 封锁包含多种方式，最容易操作也是最基础的方式便是域名黑白名单，在黑名单内的域名不让通过，IP 黑白名单也是这个道理。
• Feed to Alertus Beacons
• Early Warning Siren
• 科普一下Shadowsocks – 运维生存时间:2021-11-7 · Shadowsocks作者是谁？是否还在更新？ Shadowsocks是由若干人因为兴趣而制作的一个项目，主要开发者和领导者是 @clowwindy ，但是在2021年下半年 被“相关部门”约谈喝茶，于是被迫删除Github的源码及相关文档。

When the University of Maryland Police Department determines there is an active emergency in which the public safety of the campus community may be at risk, an urgent notification through the UMD Alerts System will be initiated. Examples of when UMD Alerts will be activated include but are not limited to:

• When a person is actively shooting a weapon on campus
• When a tornado is predicted to strike the campus area
• When a major hazardous material spill is impacting a large portion of campus

Localized incidents (such as a small fire, hazardous material spill in a lab, isolated criminal offense) likely would not require a mass notification.

All UMD Students, faculty and staff members will be automatically registered to receive email notification to their email address associated with their UMD directory account. In order to receive UMD Alert SMS (text) messages, faculty, staff and students must register a mobile device number.

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