| 翻訳と辞書 |
| VPN blocking ： ウィキペディア英語版 |
VPN blocking
VPN blocking is a technique used to block the encrypted protocol tunneling communications methods used by virtual private network (VPN) systems. Often used by large organizations such as national governments or corporations, it can act as a tool for computer security or Internet censorship by preventing the use of VPNs to bypass network firewall systems.
==Description==
Blocking VPN access can be done a few different ways. Ports that are used by common VPN tunneling protocols, such as PPTP or L2TP, to establish their connections and transfer data can be closed by system administrators to prevent their use on certain networks. Similarly, a website can prohibit access to its content by blocking access from IP addresses that are known to belong to popular VPN providers. Some governments have been known to block all access to overseas IP addresses, since VPN use often entails connecting to remote hosts that do not operate under that government's jurisdiction.〔(【引用サイトリンク】first1=Oiwan )〕
As organizations have ramped up efforts to block VPN access bypassing their firewalls, VPN providers have responded by utilizing more sophisticated techniques to make their connections less conspicuous, creating a networking arms race. For instance, as the Chinese government began using deep packet inspection to identify VPN protocols, Golden Frog began scrambling OpenVPN packet metadata for its popular VyprVPN service in an attempt to avoid detection.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
■ウィキペディアで「VPN blocking」の詳細全文を読む
スポンサード リンク
| 翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|