OpenVPN for Android Server Address: Server Port: Location Unable to read directory Select Cancel No Data LZO Compression No Certificate Client Certificate Client Certificate Key PKCS12 File CA Certificate You must select a certificate Source code and issue tracker available at http://code.google.com/p/ics-openvpn/ This program uses the following components; see the source code for full details on the licenses About About OpenVPN for Android List of all configured VPNs Profiles Type PKCS12 Password Select… You must select a file Use TLS Authentication TLS Direction Enter IPv6 Address/Netmask in CIDR Format (e.g. 2000:dd::23/64) Enter IPv4 Address/Netmask in CIDR Format (e.g. 1.2.3.4/24) IPv4 Address IPv6 Address Enter custom OpenVPN options. Use with caution. Also note that many of the tun related OpenVPN settings cannot be supported by design of the VPNSettings. If you think an important option is missing contact the author Username Password For the static configuration the TLS Auth Keys will be used as static keys Configure the VPN Add Profile Enter a name identifying the new Profile Please enter a unique Profile Name Profile Name You must select a User certificate No error found Error in Configuration Error parsing the IPv4 address Error parsing the custom routes (leave empty to query on demand) OpenVPN Shortcut Connect to VPN Profile specified in shortcut not found Random Host Prefix Adds 6 random chars in front of hostname Enable Custom Options Specify custom options. Use with care! Route rejected by Android Disconnect clear log Cancel Confirmation Disconnect the connected VPN/cancel the connection attempt? Remove VPN Checks whether the server uses a TLS Server Certificate Except TLS Server Checks the Remote Server Certificate Subject DN Certificate Hostname Check Specify the check used to verify the remote certificate DN (e.g. C=DE, L=Paderborn, OU=Avian IP Carriers, CN=openvpn.blinkt.de)\n\nSpecify the complete DN or the RDN (openvpn.blinkt.de in the example) or an RDN prefix for verification.\n\nWhen using RDN prefix \"Server\" matches \"Server-1\" and \"Server-2\"\n\nLeaving the text field empty will check the RDN against the server hostname.\n\nFor more details see the OpenVPN 2.3.1+ manpage under —verify-x509-name Remote certificate subject Enables the TLS Key Authentication TLS Auth File Requests IP addresses, routes and timing options from the server. No information is requested from the server. Settings need to be specified below. Pull Settings DNS Override DNS Settings by Server Use your own DNS Servers searchDomain DNS Server to be used. DNS Server Secondary DNS Server used if the normal DNS Server cannot be reached. Backup DNS Server Ignore pushed routes Ignore routed pushed by the server. Redirects all Traffic over the VPN Use default Route Enter custom routes. Only enter destination in CIDR format. \"10.0.0.0/8 2002::/16\" would direct the networks 10.0.0.0/8 and 2002::/16 over the VPN. Custom Routes Log verbosity level Allows authenticated packets from any IP Allow floating server Custom Options Edit VPN Settings Remove the VPN Profile \'%s\'? On some custom ICS images the permission on /dev/tun might be wrong, or the tun module might be missing completely. For CM9 images try the fix ownership option under general settings Failed to open the tun interface "Error: " Clear info Show connection details Last interface configuration from OpenVPN: Local IPv4: %1$s/%2$d IPv6: %3$s MTU: %4$d DNS Server: %s DNS Domain: %s Routes: %s Routes IPv6: %s Got interface information %1$s and %2$s, assuming second address is peer address of remote. Using /32 netmask for local IP. Mode given by OpenVPN is \"%3$s\". Cannot make sense of %1$s and %2$s as IP route with CIDR netmask, using /32 as netmask. Corrected route %1$s/%2$s to %3$s/%2$s Cannot access the Android Keychain Certificates. This can be caused by a firmware upgrade or by restoring a backup of the app/app settings. Please edit the VPN and reselect the certificate under basic settings to recreate the permission to access the certificate. %1$s %2$s Send log file Send ICS OpenVPN log file Copied log entry to clip board Tap Mode Tap Mode is not possible with the non root VPN API. Therefore this application cannot provide tap support Again? Are you kidding? No, tap mode is really not supported and sending more mail asking if it will be supported will not help. A third time? Actually, one could write a a tap emulator based on tun that would add layer2 information on send and strip layer2 information on receive. But this tap emulator would also have to implement ARP and possibly a DHCP client. I am not aware of anybody doing any work in this direction. Contact me if you want to start coding on this. FAQ Frequently asked questions and some advice Copying log entries To copy a single log entry press and and hold on the log entry. To copy/send the whole log use the Send Log option. Use the hardware menu button if not visible in the GUI. Shortcut to start You can place a shortcut to start OpenVPN on your desktop. Depending on your homescreen program you have to add a shortcut or a widget. Your image does not support the VPNService API, sorry :( Encryption Enter encryption method Enter the encryption cipher alogithm used by OpenVPN. Leave empty to use default cipher. Enter the authentication digest used for OpenVPN. Leave empty to use default digest. Authentication/Encryption File Explorer Inline File Import Error importing File Could not import File from filesystem [[Inline file data]] Refusing to open tun device without IP information Import Profile from ovpn file Import Could not read Profile to import Error reading config file add Profile Could not find file %1$s mentioned in the imported config file Importing config file from source %1$s Your configuration had a few configuration options that could not be parsed. These options were added as custom configuration options. The custom configuration is displayed below: Done reading config file. Do not bind to local address and port No local binding Import configuration file Security considerations "As OpenVPN is security sensitive a few notes about security are sensible. All data on the sdcard is inherently insecure. Every app can read it (for example this program requires no special sd card rights). The data of this application can only be read by the application itself. By using the import option for cacert/cert/key in the file dialog the data is stored in the VPN profile. The VPN profiles are only accessible by this application. (Do not forget to delete the copies on the sd card afterwards). Even though accessible only by this application the data is still unencrypted. By rooting the telephone or other exploits it may be possible to retrieve the data. Saved passwords are stored in plain text as well. For pkcs12 files it is highly recommended that you import them into the android keystore." Import Error showing certificate selection Got an exception trying to show the Android 4.0+ certificate selection dialog. This should never happen as this a standard feature of Android 4.0+. Maybe your Android ROM support for certificate storage is broken IPv4 IPv6 Waiting for state message… imported profile imported profile %d Broken Images Official HTC images are known to have a strange routing problem causing traffic not to flow through the tunnel (See also <a href=\"http://code.google.com/p/ics-openvpn/issues/detail?id=18\">Issue 18</a> in the bug tracker.)The official SONY images from Xperia arc S and Xperia Ray have been reported to be missing the VPNService completely from the image. Other Sony images may be affected as well. (See also <a href=\"http://code.google.com/p/ics-openvpn/issues/detail?id=29\">Issue 29</a> in the bug tracker.)On custom build images the tun module might be missing or the rights of /dev/tun might be wrong. Some CM9 images need the fix ownership option under general settings.Most important: If you have a broken image, report it to your vendor. The more people report the issue to the vendor the more likely you will get a fix. The username must not be empty. PKCS12 File Encryption Key Private Key Password Password file icon TLS Authentication Generated Config Settings Tries to set the owner of /dev/tun to system. Some CM9 images need this to make the VPNService API work. Requires root. Fix ownership of /dev/tun Shows the generated OpenVPN Configuration File Editing \"%s\" Building configuration… Turning this option on will force a reconnect if the network state is changed (e.g. WiFi to/from mobile) Reconnect on network change Got certificate \'%s\' from Keystore Network Status: %s The CA cert is usually returned from the Android Keystore. Specify a separate certificate if you get certificate verification errors. Select No CA Certificate returned while reading from Android keystore. Auhtentication will probably fail. Shows the log window on connect. The log window can always be accessed from the notification status. Show log window Running on %1$s (%2$s) %3$s, Android API %4$d Error signing with Android keystore key %1$s: %2$s The VPN connection warning telling you that this app can intercept all traffic is imposed by the system to prevent abuse of the VPNService API.\nThe VPN connection notification (The key symbol) is also imposed by the Android system to signal an ongoing VPN connection. On some images this notification plays a sound.\nAndroid introduced these system dialogs for your own safety and made sure that they cannot be circumenvented. (On some images this unfortunely includes a notifciation sound) Connection warning and notification sound English translation by Arne Schwabe<arne@rfc2549.org> IP and DNS Basic Routing Obscure OpenVPN Settings. Normally not needed. Advanced ICS Openvpn Config No DNS servers being used. Name resolution may not work. Consider setting custom DNS Servers Could not add DNS Server \"%1$s\", rejected by the system: %2$s Get a working config (tested on your computer or download from your provider/organisation)If it is a single file no with no extra pem/pks12 files you can email the file yourself and open the attachment. If you have multiple files put them on your sd card.Click on the email attachment/Use the folder icon in the vpn list to import the config fileIf there are errors about missing files put the missing files on your sd card.Click on the save symbol to add the imported VPN to your VPN listConnect the VPN by clicking on the name of the VPNIf there are error or warnings in the log try to understand the warnings/error and try to fix them Quick Start Try to load the tun.ko kernel module before trying to connect. Needs rooted devices. Load tun module Import PKCS12 from configuration into Android Keystore Error getting proxy settings: %s Using proxy %1$s %2$d Use system proxy Use the system wide configuration for HTTP/HTTPS proxies to connect. You can <a href=\"https://www.paypal.com/cgi-bin/webscr?hosted_button_id=R2M6ZP9AF25LS&cmd=_s-xclick\">donate with PayPal</a> OpenVPN will reconnect a VPN if it was active on system reboot/shutdown. Please read the Connection warning FAQ before using this option. Reconnect on reboot Ignore Restart Configuration changes are applied after restarting the VPN. (Re)start the VPN now? Configuration changed Could not determine last connected profile for editing Duplicate notifications If Android is under system memory (RAM) pressure, apps and service which are not needed at the moment are removed from active memory. This terminates an ongoing VPN connection. To ensure that the connection/OpenVPN survives the service runs with higher priority. To run with higher priority the application must display a notification. The key notification icon is imposed by the system as described in the previous FAQ entry. It does not count as app notification for purpose of running with higher priority. No VPN profiles defined. Use the <img src=\"ic_menu_add\"/> icon to add a new VPN Use the <img src=\"ic_menu_archive\"/> icon to import an existing (.ovpn or .conf) profile from your sdcard. Be sure to also check out the FAQ. There is a quick start guide. Convert remote-tls format from OpenVPN 2.2 to 2.3 format Routing/Interface Configuration The Routing and interface configuration is not done via traditionell ifconfig/route command but by using the VPNService API. This results in a different routing configuration than on other OSes. The configuration only consists of the IP of the tunnel interface and the networks that should be routed over this interface. Especially no peer partner address or gateway address is needed. Special routes to reach the VPN Server (for example added when using redirect-gateway) are not needed either. The application will consequently ignore these settings when importing a configuration. The app ensures with the VPNService API that the connection to the server is not routed through the VPN tunnel. Since only specifing networks to be routed via tunnel is supported extra routes not pointing to the tunnel cannot be supported either. (e.g. route x.x.x.x y.y.y.y net_gateway). The show information button in the log windows show the current configuration of the VPNService network configuration. Do not fallback to no VPN connection when OpenVPN is reconnecting. Persistent tun OpenVPN Log Import OpenVPN configuration Battery consumption In my personal tests the main reason for high battery consumption of OpenVPN are the keepalive packets. Most OpenVPN servers have a configuration directive like \'keepalive 10 60\' which translates to a keepalive packet from client to server and server to client every ten seconds. While these packets are small and do not use much traffic, they keep the mobile radio network busy and increase the energy consumption. (See also <a href="http://developer.android.com/training/efficient-downloads/efficient-network-access.html#RadioStateMachine">The Radio State Machine | Android Developers</a>) This keepalive setting cannot be changed on the client. Only the system administrator of the OpenVPN can change the setting. Unfortunately using a keepalive larger than 60 seconds with udp has problems with some NAT gateways which terminate the state for a connnection after a short timeout (60s in my tests). Using TCP with long keepalive timeout works but has the TCP over TCP problem. (See <a href=\"http://sites.inka.de/bigred/devel/tcp-tcp.html\">Why TCP Over TCP Is A Bad Ide</a>) The Android Tethering feature (over WiFi, USB or Bluetooth) and the VPNService API (used by this program) do not work together. For more details see the <a href=\"http://code.google.com/p/ics-openvpn/issues/detail?id=34\">issue #34</a> VPN and Tethering Connection retries Reconnection settings Number of seconds to wait between connection attempts. Seconds between connections OpenVPN crashed unexpectedly. Please consider using the send Minidump option in the main menu Send Minidump to developer Sends debugging information about last crash to developer OpenVPN - %s %1$s - %2$s %1$s - %3$s, %2$s Connecting Waiting for server reply Authenticating Getting client configuration Assigning IP addresses Adding routes Connected Disconnect Reconnecting Exiting Not running Resolving host names Connecting (TCP) Authentication failed Waiting for usable network ↓%2$s/s %1$s - ↑%4$s/s %3$s Not connected Connecting to VPN %s Connecting to VPN %s Some versions of Android 4.1 have problems if the name of the keystore certificate contains non alphanumeric characters (like spaces, underscores or dashes). Try to reimport the certificate without special characters Encryption cipher Packets authentication Enter packet authentication method Toggle timestamps Running on %1$s (%2$s) %3$s, Android API %4$d, version %5$s, %6$s built by %s debug build official build Copy into profile Crashdump Add Send config file Complete DN Your imported configuration used the old DEPRECATED tls-remote option which uses a different DN format. RDN (common name) RDN prefix tls-remote (DEPRECATED) You can help translating by visiting http://crowdin.net/project/ics-openvpn/invite %1$s attempts to control %2$s By proceeding, you are giving the application permission to completely control OpenVPN for Android and to intercept all network traffic. Do NOT accept unless you trust the application. Otherwise, you run the risk of having your data compromised by malicious software." I trust this application.