Re: [iAPP] AdBlock 3天限免
有些人對這有安全疑慮 所以來解釋一下這擋廣告手法的原理
首先跟其他擋廣告app一樣有黑名單 也可以在設定自己新增要擋的網域
然後在系統安裝一個不能連線的 on-demand VPN 組態,以下簡稱偽VPN
也就是只有在連到特定網域時才會透過VPN 而非將所有的流量透過VPN傳輸
因此當你使用的app嘗試連線到黑名單中的網域時 會透過偽VPN
但因為根本不能連 當然就無法顯示廣告內容
反之若是連黑名單以外的網域 就跟平常一樣直接連線
並沒有把連線導向其他地方
換句話說就只是擋特定網域而已
是因為iOS對開發者的限制多 不能用較直接的手段擋
所以要透過偽VPN這拐彎抹角的方法
但也因此不能跟其他VPN同時用 算是妥協的方案
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