If you are looking for **anonymity**, you should use the Tor Browser. If you're looking for added **security**, you should always ensure you're connecting to websites using HTTPS. VPNは、優れたセキュリティーの代わりにはなりません。
Proton VPN has [servers in 91 countries](https://protonvpn.com/vpn-servers) [or 8 if you use their free plan](https://protonvpn.com/free-vpn).(1) Picking a VPN provider with a server nearest to you will reduce latency of the network traffic you send. これは目的地までのルートが短い(ホップが少ない) ことによります。
2020年1月時点で、Proton VPNはSEC Consultによる独立監査を受けました。 SEC ConsultはProton VPNのWindows、Android、iOSアプリに中、低リスクの脆弱性を発見しましたが、これらすべてはProton VPNによって報告書が公表される前に「適切に修正」されました。 確認された問題はいずれも攻撃者がデバイスやトラフィックへリモートアクセスを可能にするものではありませんでした。 You can view individual reports for each platform at [protonvpn.com](https://protonvpn.com/blog/open-source). In April 2022 Proton VPN underwent [another audit](https://protonvpn.com/blog/no-logs-audit) and the report was [produced by Securitum](https://protonvpn.com/blog/wp-content/uploads/2022/04/securitum-protonvpn-nologs-20220330.pdf). 2021年11月9日に[Securitum](https://research.securitum.com)から [監査証明書](https://proton.me/blog/security-audit-all-proton-apps) がProton VPNアプリに対して提供されました。
Proton VPNは主にWireGuard®プロトコルをサポートしています。 [WireGuard](https://wireguard.com) is a newer protocol that uses state-of-the-art [cryptography](https://wireguard.com/protocol). 加えて、WireGuardはよりシンプルかつより高性能であることを目指しています。
Proton VPN [recommends](https://protonvpn.com/blog/wireguard) the use of WireGuard with their service. On Proton VPN's Windows, macOS, iOS, Android, ChromeOS, and Android TV apps, WireGuard is the default protocol; however, [support](https://protonvpn.com/support/how-to-change-vpn-protocols) for the protocol is not present in their Linux app.
#### :material-alert-outline:{ .pg-orange } No IPv6 Support
Proton VPN's servers are only compatible with IPv4. The Proton VPN applications will block all outgoing IPv6 traffic, so you don't have to worry about your IPv6 address being leaked, but you will not be able to connect to any IPv6-only sites, and you will not be able to connect to Proton VPN from an IPv6-only network.
Proton VPN currently only supports ephemeral remote [port forwarding](https://protonvpn.com/support/port-forwarding) via NAT-PMP, with 60 second lease times. The Windows app provides an easy to access option for it, while on other operating systems you'll need to run your own [NAT-PMP client](https://protonvpn.com/support/port-forwarding-manual-setup). Torrentアプリは多くの場合NAT-PMPをネイティブサポートしています。
Proton VPN has their [Stealth](https://protonvpn.com/blog/stealth-vpn-protocol) protocol which *may* help in situations where VPN protocols like OpenVPN or Wireguard are blocked with various rudimentary techniques. Stealth encapsulates the VPN tunnel in TLS session in order to look like more generic internet traffic.
Unfortunately it does not work very well in countries where sophisticated filters are deployed that analyze all outgoing traffic in an attempt to discover encrypted tunnels. Stealth is also not yet available on [Windows](https://github.com/ProtonVPN/win-app/issues/64) or Linux.
In addition to providing standard OpenVPN configuration files, Proton VPN has mobile clients for [App Store](https://apps.apple.com/app/id1437005085), [Google Play](https://play.google.com/store/apps/details?id=ch.protonvpn.android), and [GitHub](https://github.com/ProtonVPN/android-app/releases) allowing for easy connections to their servers.
Proton VPNクライアントは現時点でLinuxを除くすべてのプラットフォームで2要素認証をサポートしています。 Proton VPNはスイス、アイスランド、スウェーデンに独自のサーバーとデータセンターを持っています。 They offer content blocking and known-malware blocking with their DNS service. Additionally, Proton VPN also offers "Tor" servers allowing you to easily connect to onion sites, but we still strongly recommend using [the official Tor Browser](https://torproject.org) for this purpose.
System crashes [may occur](https://protonvpn.com/support/macos-t2-chip-kill-switch) on Intel-based Macs when using the VPN killswitch. この機能が必要で、Intelチップセットを搭載したMacを使用している場合は別のVPNサービスの利用を検討する必要があります。
IVPN has [servers in 37 countries](https://ivpn.net/status).(1) Picking a VPN provider with a server nearest to you will reduce latency of the network traffic you send. これは目的地までのルートが短い(ホップが少ない) ことによります。
IVPN has undergone a [no-logging audit from Cure53](https://cure53.de/audit-report_ivpn.pdf) which concluded in agreement with IVPN's no-logging claim. IVPN has also completed a [comprehensive pentest report Cure53](https://cure53.de/summary-report_ivpn_2019.pdf) in January 2020. IVPN has also said they plan to have [annual reports](https://ivpn.net/blog/independent-security-audit-concluded) in the future. A further review was conducted [in April 2022](https://ivpn.net/blog/ivpn-apps-security-audit-2022-concluded) and was produced by Cure53 [on their website](https://cure53.de/pentest-report_IVPN_2022.pdf).
As of February 2020 [IVPN applications are now open source](https://ivpn.net/blog/ivpn-applications-are-now-open-source). Source code can be obtained from their [GitHub organization](https://github.com/ivpn).
In addition to accepting credit/debit cards and PayPal, IVPN accepts Bitcoin, **Monero** and **cash/local currency** (on annual plans) as anonymous forms of payment.
IVPNはWireGuard®️プロトコルをサポートしています。 [WireGuard](https://wireguard.com) is a newer protocol that uses state-of-the-art [cryptography](https://wireguard.com/protocol). 加えて、WireGuardはよりシンプルかつより高性能であることを目指しています。
IVPN [recommends](https://ivpn.net/wireguard) the use of WireGuard with their service and, as such, the protocol is the default on all of IVPN's apps. IVPN also offers a WireGuard configuration generator for use with the official WireGuard [apps](https://wireguard.com/install).
#### :material-information-outline:{ .pg-blue } IPv6 Support
IVPN allows you to [connect to services using IPv6](https://www.ivpn.net/knowledgebase/general/do-you-support-ipv6) but doesn't allow you to connect from a device using an IPv6 address.
IVPN previously supported port forwarding, but removed the option in [June 2023](https://ivpn.net/blog/gradual-removal-of-port-forwarding). Missing this feature could negatively impact certain applications, especially peer-to-peer applications like torrent clients.
IVPN has obfuscation modes using the [v2ray](https://v2ray.com/en/index.html) project which helps in situations where VPN protocols like OpenVPN or Wireguard are blocked. Currently this feature is only available on Desktop and [iOS](https://ivpn.net/knowledgebase/ios/v2ray). It has two modes where it can use [VMess](https://guide.v2fly.org/en_US/basics/vmess.html) over QUIC or TCP connections. QUIC is a modern protocol with better congestion control and therefore may be faster with reduced latency. The TCP mode makes your data appear as regular HTTP traffic.
In addition to providing standard OpenVPN configuration files, IVPN has mobile clients for [App Store](https://apps.apple.com/app/id1193122683), [Google Play](https://play.google.com/store/apps/details?id=net.ivpn.client), and [GitHub](https://github.com/ivpn/android-app/releases) allowing for easy connections to their servers.
IVPNのクライアントは2要素認証をサポートしています（Mullvadのクライアントはサポートしていません）。 IVPN also provides "[AntiTracker](https://ivpn.net/antitracker)" functionality, which blocks advertising networks and trackers from the network level.
Mullvad has [servers in 41 countries](https://mullvad.net/servers).(1) Picking a VPN provider with a server nearest to you will reduce latency of the network traffic you send. これは目的地までのルートが短い(ホップが少ない) ことによります。
> Cure53とAssured ABは監査の結果に満足しており、このソフトウェアは全体的に好印象を残した。 With security dedication of the in-house team at the Mullvad VPN compound, the testers have no doubts about the project being on the right track from a security standpoint.
In 2020 a second audit [was announced](https://mullvad.net/blog/2020/6/25/results-available-audit-mullvad-app) and the [final audit report](https://cure53.de/pentest-report_mullvad_2020_v2.pdf) was made available on Cure53's website:
> The results of this May-June 2020 project targeting the Mullvad complex are quite positive. [...] The overall application ecosystem used by Mullvad leaves a sound and structured impression. The overall structure of the application makes it easy to roll out patches and fixes in a structured manner. More than anything, the findings spotted by Cure53 showcase the importance of constantly auditing and re-assessing the current leak vectors, in order to always ensure privacy of the end-users. With that being said, Mullvad does a great job protecting the end-user from common PII leaks and privacy related risks.
In 2021 an infrastructure audit [was announced](https://mullvad.net/en/blog/2021/1/20/no-pii-or-privacy-leaks-found-cure53s-infrastructure-audit) and the [final audit report](https://cure53.de/pentest-report_mullvad_2021_v1.pdf) was made available on Cure53's website. Another report was commissioned [in June 2022](https://mullvad.net/en/blog/2022/6/22/vpn-server-audit-found-no-information-leakage-or-logging-of-customer-data) and is available on [Assured's website](https://assured.se/publications/Assured_Mullvad_relay_server_audit_report_2022.pdf).
Mullvad, in addition to accepting credit/debit cards and PayPal, accepts Bitcoin, Bitcoin Cash, **Monero** and **cash/local currency** as anonymous forms of payment. They also accept Swish and bank wire transfers.
MullvadはWireGuard®️プロトコルをサポートしています。 [WireGuard](https://wireguard.com) is a newer protocol that uses state-of-the-art [cryptography](https://wireguard.com/protocol). 加えて、WireGuardはよりシンプルかつより高性能であることを目指しています。
Mullvad [recommends](https://mullvad.net/en/help/why-wireguard) the use of WireGuard with their service. It is the default or only protocol on Mullvad's Android, iOS, macOS, and Linux apps, but on Windows you have to [manually enable](https://mullvad.net/en/help/how-turn-wireguard-mullvad-app) WireGuard. Mullvad also offers a WireGuard configuration generator for use with the official WireGuard [apps](https://wireguard.com/install).
Mullvad allows you to [access services hosted on IPv6](https://mullvad.net/en/blog/2014/9/15/ipv6-support) and connect from a device using an IPv6 address.
Mullvad previously supported port forwarding, but removed the option in [May 2023](https://mullvad.net/en/blog/2023/5/29/removing-the-support-for-forwarded-ports). Missing this feature could negatively impact certain applications, especially peer-to-peer applications like torrent clients.
Mullvad has obfuscation an mode using [Shadowsocks with v2ray](https://mullvad.net/en/help/shadowsocks-with-v2ray) which may be useful in situations where VPN protocols like OpenVPN or Wireguard are blocked.
Mullvad has published [App Store](https://apps.apple.com/app/id1488466513) and [Google Play](https://play.google.com/store/apps/details?id=net.mullvad.mullvadvpn) clients, both supporting an easy-to-use interface as opposed to requiring you to manually configure your WireGuard connection. The Android client is also available on [GitHub](https://github.com/mullvad/mullvadvpn-app/releases).
Mullvad is very transparent about which nodes they [own or rent](https://mullvad.net/en/servers). They use [ShadowSocks](https://shadowsocks.org) in their ShadowSocks + OpenVPN configuration, making them more resistant against firewalls with [Deep Packet Inspection](https://en.wikipedia.org/wiki/Deep_packet_inspection) trying to block VPNs. Supposedly, [China has to use a different method to block ShadowSocks servers](https://github.com/net4people/bbs/issues/22). Mullvad's website is also accessible via Tor at [o54hon2e2vj6c7m3aqqu6uyece65by3vgoxxhlqlsvkmacw6a7m7kiad.onion](http://o54hon2e2vj6c7m3aqqu6uyece65by3vgoxxhlqlsvkmacw6a7m7kiad.onion).
**私たちは、推奨するいずれのプロバイダーとも提携していません。 This allows us to provide completely objective recommendations.** In addition to [our standard criteria](about/criteria.md), we have developed a clear set of requirements for any VPN provider wishing to be recommended, including strong encryption, independent security audits, modern technology, and more. プロジェクトを利用する前に、このリストをよく理解し、ご自身で調査を行って、そのプロジェクトがあなたにとって適切な選択かどうかをご確認ください。
We require all our recommended VPN providers to provide OpenVPN configuration files to be used in any client. **If** a VPN provides their own custom client, we require a killswitch to block network data leaks when disconnected.
- If VPN clients are provided, they should be [open source](https://en.wikipedia.org/wiki/Open_source), like the VPN software they generally have built into them. We believe that [source code](https://en.wikipedia.org/wiki/Source_code) availability provides greater transparency about what your device is actually doing.
A VPN is pointless if it can't even provide adequate security. We require all our recommended providers to abide by current security standards for their OpenVPN connections. Ideally, they would use more future-proof encryption schemes by default. We also require an independent third-party to audit the provider's security, ideally in a very comprehensive manner and on a repeated (yearly) basis.
- アナリティクスを自己でホストすること（つまり、Googleアナリティクスは不可）。 プロバイダーのサイトは、オプトアウトを希望するユーザーのために[DNT（Do Not Track）](https://en.wikipedia.org/wiki/Do_Not_Track)に準拠しなければなりません。
厳密な要件ではありませんが、推奨するサービスプロバイダーを決定する際に考慮した要素がいくつかあります。 These include content blocking functionality, warrant canaries, multihop connections, excellent customer support, the number of allowed simultaneous connections, etc.
