자주 묻는 질문

Verify Your Psiphon Download is Authentic

Windows용 Psiphon은 믿을만한가요?

Psiphon for Windows is never distributed as an installable package. Each Psiphon for Windows client is a single executable file (".exe") that is digitally signed by Psiphon Inc. Windows automatically checks this signature when you run the client. You can also manually inspect the signature before running the client by invoking the Properties dialog for the file and inspecting the Digital Signatures tab. The SHA1 thumbprint for the Psiphon Inc. certificate public key is displayed in the Certificate dialog Details tab.

The flow of dialog boxes required to find the certificate thumbprint for Psiphon for Windows

For the certificate valid for the period 2023-05-01 to 2026-07-28 the SHA1 thumbprint is:

1a 20 0c f5 cb 19 e7 2b fc cf 02 17 fd 4d 78 33 81 2d 3a 42

For the certificate valid for the period 2020-09-09 to 2023-11-02 the SHA1 thumbprint is:

07 89 b3 5f d5 c2 ef 81 42 e6 aa e3 b5 8f ff 14 e4 f1 31 36

For the certificate valid for the period 2017-07-05 to 2020-10-03 the SHA1 thumbprint is:

89 fd cd 09 65 f4 dd 89 2b 25 7c 04 d5 b4 14 c7 ac 2b 5f 56

인증서는 다음 기간에 대해 유효하며 2014-05-08 to 2017-09-06, SHA1 지문은 다음과 같습니다:

9b a0 bd 1c e4 ca f6 20 41 0d 46 47 ae 40 b0 7c 83 c7 31 99

인증서는 다음 기간에 대해 유효하며 2012-05-21 to 2014-07-30, SHA1 지문은 다음과 같습니다:

84 c5 13 5b 13 d1 53 96 7e 88 c9 13 86 0e 83 ee ef 48 8e 91

인증서는 다음 기간에 대해 유효하며 2011-06-16 to 2012-06-21, SHA1 지문은 다음과 같습니다:

8f b7 ef bd 20 a9 20 3a 38 37 08 a2 1e 0a 1d 2e ad 7b ee 6d

Windows용 Psiphon은 자동 업데이트 기능이 내장되어있으며 신뢰된 업데이트를 자동으로 확인합니다.

Android용 Psiphon 은 믿을 만 한 가요?

ALERT: A recently reported vulnerability may cause Android app signature checking to falsely report malicious APKs as valid. We recommend that users turn on the Google Verify Apps feature as documented here.

각 Android용 Psiphon 클라이언트는 Android APK 파일 (".apk") 형식으로 배포되며 Psiphon Inc.에 의해 디지털 서명되었습니다. Psiphon Inc의 인증서 공개 키는 다음과 같습니다:

Owner: CN=Psiphon Inc., OU=Psiphon Inc., O=Psiphon Inc.,
L=Unknown, ST=Unknown, C=CA
Issuer: CN=Psiphon Inc., OU=Psiphon Inc., O=Psiphon Inc.,
L=Unknown, ST=Unknown, C=CA
Serial number: 349480e5
Valid from: Fri Jun 01 12:04:42 EDT 2012 until: Tue Oct 18 12:04:42 EDT 2039
Certificate fingerprints:
MD5:  BB:08:CD:91:22:FC:EB:17:1A:4A:3B:90:65:CE:2E:58
SHA1: 49:2C:3A:49:20:F3:6B:AE:95:90:EB:69:A6:36:E9:88:A7:41:7A:95
SHA256: 76:DB:EF:15:F6:77:26:D4:51:A1:23:59:B8:57:9C:0D:
Signature algorithm name: SHA256withRSA
Version: 3

APK (1) 아카이브에서 인증서를 추출하고 지문 위의 값과 일치하는지 확인하고 (2) APK 인증서로 서명되어 있는지 확인 할 수 있습니다. 예를 들어, 유닉스와 자바 명령 도구를 사용하여 :

$ unzip -p PsiphonAndroid.apk META-INF/PSIPHON.RSA | keytool -printcert
$ jarsigner -verbose -verify PsiphonAndroid.apk

Android용 Psiphon은 자동 업데이트 기능이 내장되어있으며 신뢰된 업데이트를 자동으로 확인합니다.

Privacy and Security

Psiphon을 사용중일 때 ISP에서 내가 인터넷으로 무엇을 하고 있는지 볼 수 있나요?

All data that goes through Psiphon is encrypted. This means that your ISP cannot see the content of your Internet traffic: web pages you browse, your chat messages, your uploads, etc.

However, please keep in mind that Psiphon is designed to be a censorship circumvention tool, and is not specifically designed for anti-surveillance purposes. Psiphon does not prevent your browsing history and cookies from being stored on your computer. And in some modes and configurations all of your Internet traffic might not be tunneled through Psiphon -- for example if your browser's proxy settings are misconfigured, or if you leave your browser open after exiting Psiphon.

There are also advanced techniques which can look at encrypted traffic and determine some things about it, such as what website is being browsed. The primary example of this is "traffic fingerprinting".

인터넷을 통해 익명 성을 요구하는 경우에는 당신은 Psiphon 대신 토르를 사용해야합니다.

어떤 사용자 정보가 Psiphon에게 수집되나요?

우리가 수집하는 정보는 개인 정보 보호 정책을 참고하세요.

How do I report a security vulnerability?

Please see our security.txt file for contact information and details.

Installing, Running, and Updating Psiphon

Is Psiphon available for macOS, Linux, Windows Phone, etc.?

The platforms we support are those available on the Download page. We are constantly working to expand our platform support, so hopefully we'll support your desired OS in the near future!

Android에서 어플리케이션을 직접 설치하려면 어떻게 해야 하나요?

“Sideloading” means installing an app on your device without going through the Play Store. This is desirable for people who do not have access to the Play Store, or when the app is not available in their region.

In order to install a direct download of Psiphon for Android, you must enable sideloading on your device. To do so, go into your Android settings, then into the “Security” section, then enable “Unknown sources”.

Screenshot of the Android security setting that allows installation of non-Play Store apps

Does Psiphon for Windows work on Windows XP or Vista?

As of December 2019, Psiphon does not support Windows XP or Vista. A legacy build is available for download that will work on those platforms for the foreseeable future, but users are strongly encouraged to upgrade to a recent version of Windows.

어떻게 하면 사용중인 Psiphon의 버전을 알 수 있나요?

Psiphon이 시작될때, 로그 출력 첫 번째 줄에 클라이언트 버젼을 표시합니다.

What is the file “psiphon3.exe.orig”?

The automatic update process in Psiphon for Windows renames its old version to “psiphon3.exe.orig”. Old files with the “.orig” suffix can safely be deleted.

How do I get an updated version of Psiphon?

Android: If you have installed Psiphon for Android through the Google Play Store, it will be automatically updated by the Play Store when an update is available. If you have sideloaded Psiphon for Android, the Psiphon client will download updates as they are available, and a notification will appear asking you to install the update.

Windows: The Psiphon for Windows client will download and install updates as they are available.

Manually updating: If the Psiphon self-updating mechanism isn't working (for example, if it's been blocked), you can find information about getting a fresh copy of Psiphon from the Download page.

How do I uninstall Psiphon for Windows?

Psiphon for Windows does not get installed, and won't appear in Windows’ “Add or Remove Programs” list. The executable file can be run from your “Downloads” directory, or it can be copied to a different directory and run from there. If you want to remove the program, you can simply delete the executable file.

How do I clear Psiphon for Windows' local data?

Psiphon for Windows stores some data locally under the user's profile. It is located at a path like C:\Users\YourName\AppData\Local\Psiphon3; or, more generally, %USERPROFILE%\AppData\Local. You can delete the local data by going to that path in Windows Explorer and deleting it, or entering this command at a command prompt: rmdir /s "%USERPROFILE%\AppData\Local". There is also information stored in the system registry at HKEY_CURRENT_USER\SOFTWARE\Psiphon3. You can use the Windows regedit tool to delete those registry keys.

How Psiphon Works

왜 Psiphon IP가 자주 바뀌나요?

Psiphon 클라이언트는 자동으로 새로운 Psiphon 서버를 찾습니다. 마지막으로 사용된 서버를 사용할 수 없는 경우 다른 서버를 대신 사용합니다.

Windows용 Psiphon이 나의 모든 인터넷 트래픽을 우회 합니까?

VPN 모드에서만 사용할 수 있습니다. VPN 모드에서 연결이 성공적으로 끝나면 모든 컴퓨터 내의 트래픽이 Psiphon 네트워크로 전달됩니다. VPN 모드가 설정되어 있지 않으면 로컬 HTTP와 SOCKS 프록시만 우회됩니다.

Does Psiphon Browser for iOS proxy all of my device's Internet traffic?

Psiphon Browser for iOS is a browser-only application and so will only tunnel data that is loaded in the app itself, and will not tunnel your other apps (like your Facebook or Twitter apps) through the Psiphon network. So, for example, if you wanted to use the Psiphon network to access your Facebook account, you would use Psiphon Browser to go the Facebook website. If you were to open your Facebook app, it would use your direct internet connection, and would not be tunneled through the Psiphon network.

Psiphon 터널링이 기본적으로 사용하는 프로토콜은 무엇입니까?

Psiphon uses SSH with the addition of an obfuscation layer on top of the SSH handshake to defend against protocol fingerprinting. A description of the protocol can be found here.

Windows용 Psiphon은 어떤 VPN 프로토콜을 사용하나요? 왜 연결이 안 되나요?

Psiphon uses the L2TP/IPsec VPN protocol.


Why should I create a PsiCash account?

With an account, your PsiCash balance is kept safe and can be shared between your devices. If you don't have a PsiCash account, your balance is specific to each device, and losing a device means losing your balance on that device. When you have an account, all you need to do is log in to restore your balance.

We will also be adding more benefits to having a PsiCash account in the future, such as transferring PsiCash between users and offering purchases that apply to all of your devices.

Why should I use a pseudonym or alias for my PsiCash account username?

A pseudonym is an alias or handle that you use to identify yourself that is different from your real name. Using a pseudonym for your PsiCash account username helps prevent your real identity from being linked with your Psiphon or PsiCash usage. If revealing yourself to be a Psiphon user is dangerous or otherwise undesirable, then you should choose a username that cannot be linked to you, and instead you should use a pseudonym that you have not used with any other site or service.

When signing up for a new PsiCash account, it is possible for someone to check for the existence of a username by trying to create an account with it. If the attempt is successful, the username did not already exist. If the attempt failed, the username did already exist. Having your username discovered does not put your PsiCash account at risk, but your status as a Psiphon user may be revealed in this way.

If you wish to avoid the link to your real identity, it is important to note that using a pseudonym that you use on other sites or services is almost the same as using your real name. If that pseudonym has already been linked to your identity elsewhere, then very little anonymity is gained by using it.

Also note that your email address is not discoverable in this way. Even if you use a pseudonym, you can still provide an email address on your PsiCash account and it will not be discoverable in any way.

What if I need to merge the PsiCash balance from more devices into my account?

To avoid abuse, we allow the pre-existing PsiCash balance and Speed Boost to be added from only a few devices to your PsiCash account when logging in. If you have more devices that you would like to keep the balances from, please email us at psicash.support@psiphon.ca. You must include your PsiCash username and the reason why you need more merges.

What is the psicash= parameter in some landing page URLs?

In some landing page URLs and in buy.psi.cash URLs you will see a parameter like #!psicash=abcd1234... or ?psicash=abcd1234.... This contains information necessary to give you a PsiCash reward for visiting some landing pages or for making a purchase of PsiCash.

The "token" you will see in the decoded base-64 of the parameter is your PsiCash "earner" token, and can only be used for crediting your account with PsiCash -- not for spending your PsiCash, viewing your balance, etc. This token also cannot be used to reveal your identity or anything else about your account.

문제 해결 - 문제가 있으신가요?


왜 "연결 실패" 만 계속해서 뜨나요?

메시지가 "연결 실패"를 반복하면, 클라이언트가 사용 가능한 서버가 없음을 의미합니다. 새로운 Psiphon 클라이언트를 다운로드하세요.

Why does my Psiphon connection sometimes disconnect?

This is most commonly caused by an unreliable or inconsistent Internet connection to your device or computer. On a phone, this can mean losing reception. On a computer, this can mean inconsistent Wi-Fi or an unreliable Internet Service Provider.

After upgrading the Psiphon for Android app, it won't connect.

If Psiphon is connected while an upgrade is installed, it may not be able to connect afterwards and will show the error “start_tunnel_failed application is not prepared or revoked”. This is due to an Android OS bug. This condition can be fixed by rebooting your device.

When Psiphon for Android first connects, why can't I select “I trust this application”?

Check if you are running a screen filter app or an app that manages your screen's brightness. If you are, try disabling it. Many of these apps (such as Lux Auto Brightness, Twilight, Night Mode) interfere with the user's ability to interact with this prompt.

왜 "연결 실패" 만 계속해서 뜨나요?

메시지가 "연결 실패"를 반복하면, 클라이언트가 사용 가능한 서버가 없음을 의미합니다. 새로운 Psiphon 클라이언트를 다운로드하세요.

Why does my Psiphon connection sometimes disconnect?

This is most commonly caused by an unreliable or inconsistent Internet connection to your device or computer. On a phone, this can mean losing reception. On a computer, this can mean inconsistent Wi-Fi or an unreliable Internet Service Provider.

After using Psiphon for Windows my computer can no longer connect to the Internet.

When Psiphon for Windows connects it modifies your computer's proxy settings, and when it disconnects it restores them to their original state. If Psiphon for Windows does not exit properly, it may not properly restore the original proxy settings, and this will result in you being unable to connect to the Internet.

The easiest way to fix this for most people is to connect with Psiphon again, and then cleanly disconnect.

To manually fix your proxy settings, open Internet Explorer, then go to the Tools menu (or gear icon), Internet Options → Connections tab → LAN Settings button. Then remove the checkmark beside “Use a proxy server for your LAN”.

Psiphon for Windows gives the error “doc.body is null or not an object” and does not work.

This error will occur on Windows XP if Internet Explorer 6 is installed. Psiphon for Windows requires Internet Explorer 7 or higher to be installed. The best way to install higher versions of Internet Explorer is via Windows Update.

If you can't use Windows Update and want to install Internet Explorer 7 or Internet Explorer 8 directly, you can get them via these links:

Why can't I connect with Psiphon for Windows in L2TP/IPsec mode?

Your network's firewall may not allow the use of VPNs. Your home router may not be configured to pass through this VPN protocol; check your firewall settings to see that IPsec or L2TP pass-through is enabled. Your system’s IPsec Services may be disabled; check your service settings and enable these services to start automatically.

Windows용 Psiphon에서 VPN 모드를 통해 연결할 수 있습니다. 하지만 왜 이렇게 느린가요? 어떤 때는 웹 페이지가 아예 로드되지 않습니다.

Certain networking hardware or Internet connections may cause performance problems for L2TP/IPsec which is the protocol used by Psiphon in VPN mode. Try disabling VPN mode.

Windows 용 Psiphon에서 VPN 모드로 연결하면 웹 페이지가 아무것도 표시하지 않습니다. 도메인 룩업이 실패했음을 나타내는 오류 메시지를 받았습니다.

Psiphon restricts DNS traffic to white-listed, vetted DNS servers. The Psiphon client automatically configures your VPN DNS server settings. If you're getting errors related to DNS, check that you're not infected by the "DNS Changer" malware, which tries to change your DNS server settings. More info can be found here.

Compatibility with Other Applications

Windows용 Psiphon은 Internet Explorer, Firefox, 그리고 Chrome 웹 브라우저와 호환되나요?

예. 당신의 브라우저 설정을 확인하고 시스템 프록시 설정을 사용하도록 설정 되어있는지 확인해주세요.

Are there any port restrictions when using Psiphon?

Outbound connections via the Psiphon network can only be made to a restricted set of server ports including: 53, 80, 443, 465, 587, 993, 995, 8000, 8001, 8080. See this discussion for more information. Mail clients cannot establish outbound connections on port 25. See this discussion for more information.

Why can't I use my favorite app while Psiphon is running? Why can't I send email using my mail client?

This is probably due to Psiphon's port restrictions.

Why do Android mobile hotspot and USB tethering not work through Psiphon?

This is due to a limitation in Android's hotspot and tethering implementation. You might find that either the tethered device cannot connect to the internet or the traffic will not go through the VPN.

Why does my antivirus (AV) or firewall identify Psiphon as a threat?

The first thing to check is that you have an authentic copy of Psiphon. Please follow these instructions to verify that your copy of Psiphon is authentic. If it is not authentic, please send us an email with information about how you obtained the copy and, if possible, with the Psiphon executable attached.

If your copy of Psiphon is authentic, then this is an instance of a false positive report. Although most antivirus/firewall programs have added Psiphon’s digital signature to their whitelist rules, some may still erroneously identify Psiphon’s executable file as a virus or threat. In this case, please send us an email, specifying the AV/firewall program you use, and we will contact the AV/firewall vendor to solve the problem.

Why can't I tunnel my Windows Metro (aka Modern UI) apps through Psiphon?

Windows 8 introduced an alternative to the desktop app interface called “Metro”, which was later renamed to “Modern UI”. Some, but very few, applications can only run in “Metro mode” and some (like Internet Explorer) can run in either “Metro mode” or “Desktop mode”. This new user interface mode continues to exist in Windows 8.1 and, to a lesser degree, in Windows 10.

Applications in Metro mode cannot use a local proxy without the user modifying system security settings. This means that Metro mode apps cannot use Psiphon, and will not be able to reach the internet when Psiphon is connected. You can use the EnableLoopback Utility to allow Metro mode apps to work with Psiphon.

The following are examples of the error message you might see when Metro mode apps are trying and failing to work through Psiphon.

어떻게 어플리케이션이 Psiphon 터널을 사용하도록 구성합니까?

Psiphon will automatically configure your system to use a local HTTP/HTTPS proxy and a local SOCKS proxy. The port numbers for these proxies are chosen randomly, unless specified in the Psiphon settings. Windows applications that use the System Proxy Settings will automatically be proxied. You may manually configure other applications to use these local proxies. Both Psiphon for Windows and Psiphon for Android run these local proxies.

How can I tell Psiphon for Windows not to configure my system proxy settings?

실행을 클릭하고, regedit 을 입력하여 레지스트리 편집기를 엽니다. HKEY_CURRENT_USER\Software\Psiphon3를 찾아 열면 오른쪽에 SkipProxySettings가 보일 것입니다. 이 값을 1 로 변경하면 Psiphon은 자동적으로 시스템 프록시 설정을 구성하지 않을 것 입니다.

How can I make WhatsApp for Windows work through Psiphon?

Research and user reports suggest that the WhatsApp for Windows app does not get properly proxied through Psiphon. This is a shortcoming in the WhatsApp app. If and when support is added, it is likely that this WhatsApp FAQ entry will be updated with instructions. Using WhatsApp via its web interface at web.whatsapp.com does work properly through Psiphon.


루팅된 Android 기기에서 완전한 기기 모드에 무슨 일이 생긴거죠?

Before December 2015 Psiphon for Android had a feature that allowed users with older Android devices (pre-4.0/ICS) to tunnel the whole device if it was rooted. A major update to Psiphon at that time necessitated the removal of that feature.

How do I get a refund for a subscription, purchase of PsiCash, or other purchase?

Android: If it has been less than 48 hours since you made the purchase, you can get a refund through the Play Store. After 48 hours, email us at refund+android@psiphon.ca. Please include your name, the email address of your Play Store account, the date of the purchase, what was purchased, the amount of the purchase, and the reason you are requesting the refund.

iOS and macOS: Please request the refund through the App Store.

Windows: Email us at refund+windows@psiphon.ca. Please include your name, the email address or phone number used at the time of purchase, the date of the purchase, what was purchased, the amount of the purchase, and the reason you are requesting the refund.

Note that refunds may take up to a week to process.