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  1. @ziogaschr ziogaschr revised this gist Mar 9, 2015. 1 changed file with 3 additions and 3 deletions.
    6 changes: 3 additions & 3 deletions debian-wvdial-ppp0-interface-autossh.markdown
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    Original file line number Diff line number Diff line change
    @@ -6,9 +6,9 @@ The modules that will be used are `wvdial` and `autossh`

    **Credits goes to:**

    1. http://blog.rootshell.be/2015/02/19/my-little-pwnie-box/
    2. https://wiki.archlinux.org/index.php/3G_and_GPRS_modems_with_pppd
    3. http://blog.stalkr.net/2010/11/login-notifications-pamexec-scripting.html
    1. http://blog.rootshell.be/2015/02/19/my-little-pwnie-box/
    2. https://wiki.archlinux.org/index.php/3G_and_GPRS_modems_with_pppd
    3. http://blog.stalkr.net/2010/11/login-notifications-pamexec-scripting.html

    1. Configure wvdial
    -------------------
  2. @ziogaschr ziogaschr revised this gist Mar 9, 2015. No changes.
  3. @ziogaschr ziogaschr revised this gist Mar 9, 2015. 1 changed file with 1 addition and 0 deletions.
    1 change: 1 addition & 0 deletions debian-wvdial-ppp0-interface-autossh.markdown
    View file
    Original file line number Diff line number Diff line change
    @@ -8,6 +8,7 @@ The modules that will be used are `wvdial` and `autossh`

    1. http://blog.rootshell.be/2015/02/19/my-little-pwnie-box/
    2. https://wiki.archlinux.org/index.php/3G_and_GPRS_modems_with_pppd
    3. http://blog.stalkr.net/2010/11/login-notifications-pamexec-scripting.html

    1. Configure wvdial
    -------------------
  4. @ziogaschr ziogaschr revised this gist Mar 9, 2015. 1 changed file with 3 additions and 0 deletions.
    3 changes: 3 additions & 0 deletions debian-wvdial-ppp0-interface-autossh.markdown
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    @@ -264,6 +264,7 @@ Get notified on client autossh connect/disconnect
    -----------------------------------------

    `$ apt-get install mailx`

    `$ apt-get install mailutils`

    2. Call our scirpt which sends email on connect/disconnect using pam_exec
    @@ -280,7 +281,9 @@ Add the below line in file:
    ---------------------------------------------------

    `$ touch /home/autossh/notify-login`

    `$ chmod +X /home/autossh/notify-login`

    `$ pico /home/autossh/notify-login`

    The file needs to have the below contents:
  5. @ziogaschr ziogaschr revised this gist Mar 9, 2015. 1 changed file with 8 additions and 2 deletions.
    10 changes: 8 additions & 2 deletions debian-wvdial-ppp0-interface-autossh.markdown
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    @@ -260,7 +260,13 @@ For that reason, you can do **one** of the below things:

    Get notified on client autossh connect/disconnect
    =================================================
    1. Call our scirpt which sends email on connect/disconnect using pam_exec
    1. Install modules for sending out emails
    -----------------------------------------

    `$ apt-get install mailx`
    `$ apt-get install mailutils`

    2. Call our scirpt which sends email on connect/disconnect using pam_exec
    -------------------------------------------------------------------------

    `$ pico /etc/pam.d/sshd`
    @@ -270,7 +276,7 @@ Add the below line in file:
    session optional pam_exec.so /home/autossh/notify-login
    ```

    2. Add script that sends out email based on PAM env
    3. Add script that sends out email based on PAM env
    ---------------------------------------------------

    `$ touch /home/autossh/notify-login`
  6. @ziogaschr ziogaschr revised this gist Mar 9, 2015. 1 changed file with 59 additions and 1 deletion.
    60 changes: 59 additions & 1 deletion debian-wvdial-ppp0-interface-autossh.markdown
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    @@ -255,4 +255,62 @@ For that reason, you can do **one** of the below things:

    Then restart the ssh deamon:

    `$ service ssh restart`
    `$ service ssh restart`


    Get notified on client autossh connect/disconnect
    =================================================
    1. Call our scirpt which sends email on connect/disconnect using pam_exec
    -------------------------------------------------------------------------

    `$ pico /etc/pam.d/sshd`

    Add the below line in file:
    ```
    session optional pam_exec.so /home/autossh/notify-login
    ```

    2. Add script that sends out email based on PAM env
    ---------------------------------------------------

    `$ touch /home/autossh/notify-login`
    `$ chmod +X /home/autossh/notify-login`
    `$ pico /home/autossh/notify-login`

    The file needs to have the below contents:
    ```
    #!/bin/sh
    # send email only for autossh user
    [ "$PAM_USER" = "autossh" ] || exit 0
    # when ssh opens
    if [ "$PAM_TYPE" = "open_session" ]; then
    {
    echo "LOGIN"
    echo ""
    echo "User: $PAM_USER"
    echo "Ruser: $PAM_RUSER"
    echo "Rhost: $PAM_RHOST"
    echo "Service: $PAM_SERVICE"
    echo "TTY: $PAM_TTY"
    echo "Date: `date`"
    echo "Server: `uname -a`"
    } | mail -s "Alert: Autossh Access LOGIN from `hostname -s` $PAM_SERVICE login: $PAM_USER" root
    fi
    # when ssh disconnects
    if [ "$PAM_TYPE" = "close_session" ]; then
    {
    echo "LOGOUT"
    echo ""
    echo "User: $PAM_USER"
    echo "Ruser: $PAM_RUSER"
    echo "Rhost: $PAM_RHOST"
    echo "Service: $PAM_SERVICE"
    echo "TTY: $PAM_TTY"
    echo "Date: `date`"
    echo "Server: `uname -a`"
    } | mail -s "Alert: Autossh Access LOGOUT from `hostname -s` $PAM_SERVICE login: $PAM_USER" root
    fi
    ```
  7. @ziogaschr ziogaschr revised this gist Mar 6, 2015. 1 changed file with 2 additions and 2 deletions.
    4 changes: 2 additions & 2 deletions debian-wvdial-ppp0-interface-autossh.markdown
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    @@ -1,5 +1,5 @@
    Reverse proxy over 3G modem
    ===========================
    Reverse proxy over 3G modem (draft)
    ===================================

    We will explain how to configure a cubieboard running debian as a reverese proxy.
    The modules that will be used are `wvdial` and `autossh`
  8. @ziogaschr ziogaschr revised this gist Mar 6, 2015. 1 changed file with 1 addition and 1 deletion.
    2 changes: 1 addition & 1 deletion debian-wvdial-ppp0-interface-autossh.markdown
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    Original file line number Diff line number Diff line change
    @@ -89,7 +89,7 @@ TIP: place the below lines above `eth0` so as to be the default one
    pre-up /etc/ppp/wait-dialup-hardware ttyUSB0 20
    pre-up /etc/ppp/wait-dialup-hardware ttyUSB1 20
    pre-up /etc/ppp/wait-dialup-hardware ttyUSB2 20
    pre-up sleep 35
    pre-up sleep 30
    post-up echo "3G (ppp0) is online"
    ```

  9. @ziogaschr ziogaschr revised this gist Mar 6, 2015. 1 changed file with 1 addition and 1 deletion.
    2 changes: 1 addition & 1 deletion debian-wvdial-ppp0-interface-autossh.markdown
    View file
    Original file line number Diff line number Diff line change
    @@ -89,7 +89,7 @@ TIP: place the below lines above `eth0` so as to be the default one
    pre-up /etc/ppp/wait-dialup-hardware ttyUSB0 20
    pre-up /etc/ppp/wait-dialup-hardware ttyUSB1 20
    pre-up /etc/ppp/wait-dialup-hardware ttyUSB2 20
    pre-up sleep 30
    pre-up sleep 35
    post-up echo "3G (ppp0) is online"
    ```

  10. @ziogaschr ziogaschr revised this gist Mar 6, 2015. 1 changed file with 2 additions and 2 deletions.
    4 changes: 2 additions & 2 deletions debian-wvdial-ppp0-interface-autossh.markdown
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    @@ -231,7 +231,7 @@ Then restart the ssh deamon:
    5. Update ServerAliveInterval client side
    -----------------------------------------
    The ServerAliveInterval default is 600 which means that the connection will not be checked if it is open for 600 seconds. Usually after a minute the connection will be inactive with a broken pipe.
    For that reason, you can do one of the below things:
    For that reason, you can do **one** of the below things:

    1. set on your user profile settings:

    @@ -242,7 +242,7 @@ For that reason, you can do one of the below things:

    TIP: `ServerAliveCountMax 120` makes the SSH connection stays alive longer.

    2. edit the ssh_config on server with:
    2. **or** edit the ssh_config on server with:

    `$ pico /etc/ssh/ssh_config`

  11. @ziogaschr ziogaschr revised this gist Mar 6, 2015. 1 changed file with 16 additions and 2 deletions.
    18 changes: 16 additions & 2 deletions debian-wvdial-ppp0-interface-autossh.markdown
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    @@ -182,13 +182,27 @@ The file needs to have the below contents:
    ```
    #!/bin/bash
    TUNNEL="/usr/sbin/service AUTOSSH_SERVICE_NAME"
    SSH_PATH="/usr/bin/ssh"
    SSH_USER="autossh"
    SSH_SERVER="example.com"
    REMOTE_PORT="4444"
    ${TUNNEL} status
    if [ $? -ne 0 ]; then
    echo "NO AUTOSSH DAEMON ACTIVE"
    sleep 120
    ${TUNNEL} start
    else
    exist=`ps aux | grep ${SSH_PATH} | grep ${SSH_USER}@${SSH_SERVER} | grep ${REMOTE_PORT}`
    if ! test -n "$exist"; then
    echo "Autossh deamon exists, but ssh connection is not established! Restarting autossh deamon"
    ${TUNNEL} restart
    fi
    fi
    ```

  12. @ziogaschr ziogaschr revised this gist Mar 6, 2015. 1 changed file with 1 addition and 0 deletions.
    1 change: 1 addition & 0 deletions debian-wvdial-ppp0-interface-autossh.markdown
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    Original file line number Diff line number Diff line change
    @@ -218,6 +218,7 @@ Then restart the ssh deamon:
    -----------------------------------------
    The ServerAliveInterval default is 600 which means that the connection will not be checked if it is open for 600 seconds. Usually after a minute the connection will be inactive with a broken pipe.
    For that reason, you can do one of the below things:

    1. set on your user profile settings:

    ```
  13. @ziogaschr ziogaschr revised this gist Mar 6, 2015. 1 changed file with 20 additions and 20 deletions.
    40 changes: 20 additions & 20 deletions debian-wvdial-ppp0-interface-autossh.markdown
    View file
    Original file line number Diff line number Diff line change
    @@ -219,25 +219,25 @@ Then restart the ssh deamon:
    The ServerAliveInterval default is 600 which means that the connection will not be checked if it is open for 600 seconds. Usually after a minute the connection will be inactive with a broken pipe.
    For that reason, you can do one of the below things:
    1. set on your user profile settings:

    ```
    $ echo "ServerAliveInterval 60" >> ~/.ssh/config
    $ echo "ServerAliveCountMax 120" >> ~/.ssh/config
    ```

    TIP: `ServerAliveCountMax 120` makes the SSH connection stays alive longer.
    ```
    $ echo "ServerAliveInterval 60" >> ~/.ssh/config
    $ echo "ServerAliveCountMax 120" >> ~/.ssh/config
    ```
    TIP: `ServerAliveCountMax 120` makes the SSH connection stays alive longer.

    2. edit the ssh_config on server with:

    `$ pico /etc/ssh/ssh_config`

    and add below lines:

    ```
    ServerAliveInterval 60
    ServerAliveCountMax 120
    ```

    Then restart the ssh deamon:

    `$ service ssh restart`
    `$ pico /etc/ssh/ssh_config`
    and add below lines:
    ```
    ServerAliveInterval 60
    ServerAliveCountMax 120
    ```
    Then restart the ssh deamon:
    `$ service ssh restart`
  14. @ziogaschr ziogaschr revised this gist Mar 6, 2015. 1 changed file with 40 additions and 1 deletion.
    41 changes: 40 additions & 1 deletion debian-wvdial-ppp0-interface-autossh.markdown
    View file
    Original file line number Diff line number Diff line change
    @@ -201,4 +201,43 @@ Add the following in the crontab file:
    ```
    */10 * * * * /home/username/check-wan-status
    */10 * * * * /home/username/autossh-keep-alive
    ```
    ```

    4. Update ClientAliveInterval server side
    -----------------------------------------
    The ClientAliveInterval default is 600 which means that the connection will not be checked if it is open for 600 seconds. Usually after a minute the connection will be inactive with a broken pipe.
    For that reason we have to add ClientAliveInterval to the sshd_config on server with:

    `$ echo "ClientAliveInterval 60" | sudo tee -a /etc/ssh/sshd_config`

    Then restart the ssh deamon:

    `$ service ssh restart`

    5. Update ServerAliveInterval client side
    -----------------------------------------
    The ServerAliveInterval default is 600 which means that the connection will not be checked if it is open for 600 seconds. Usually after a minute the connection will be inactive with a broken pipe.
    For that reason, you can do one of the below things:
    1. set on your user profile settings:

    ```
    $ echo "ServerAliveInterval 60" >> ~/.ssh/config
    $ echo "ServerAliveCountMax 120" >> ~/.ssh/config
    ```

    TIP: `ServerAliveCountMax 120` makes the SSH connection stays alive longer.

    2. edit the ssh_config on server with:

    `$ pico /etc/ssh/ssh_config`

    and add below lines:

    ```
    ServerAliveInterval 60
    ServerAliveCountMax 120
    ```

    Then restart the ssh deamon:

    `$ service ssh restart`
  15. @ziogaschr ziogaschr revised this gist Mar 5, 2015. 1 changed file with 6 additions and 2 deletions.
    8 changes: 6 additions & 2 deletions debian-wvdial-ppp0-interface-autossh.markdown
    View file
    Original file line number Diff line number Diff line change
    @@ -162,8 +162,12 @@ The file needs to have the below contents:
    ${PING} ${HOST}
    if [ $? -ne 0 ]; then
    echo "3G (ppp0) network is down"
    (ifup ppp0) &
    echo "3G (ppp0) network connection is down! Attempting reconnection."
    /sbin/ifdown --force ppp0
    sleep 10
    /sbin/ifup --force ppp0
    sleep 10
    fi
    ```

  16. @ziogaschr ziogaschr revised this gist Mar 5, 2015. 1 changed file with 1 addition and 1 deletion.
    2 changes: 1 addition & 1 deletion debian-wvdial-ppp0-interface-autossh.markdown
    View file
    Original file line number Diff line number Diff line change
    @@ -163,7 +163,7 @@ The file needs to have the below contents:
    ${PING} ${HOST}
    if [ $? -ne 0 ]; then
    echo "3G (ppp0) network is down"
    (ifdown ppp0; sleep 5; ifup ppp0) &
    (ifup ppp0) &
    fi
    ```

  17. @ziogaschr ziogaschr revised this gist Mar 5, 2015. 1 changed file with 1 addition and 1 deletion.
    2 changes: 1 addition & 1 deletion debian-wvdial-ppp0-interface-autossh.markdown
    View file
    Original file line number Diff line number Diff line change
    @@ -163,7 +163,7 @@ The file needs to have the below contents:
    ${PING} ${HOST}
    if [ $? -ne 0 ]; then
    echo "3G (ppp0) network is down"
    (ifup ppp0) &
    (ifdown ppp0; sleep 5; ifup ppp0) &
    fi
    ```

  18. @ziogaschr ziogaschr revised this gist Mar 5, 2015. 1 changed file with 1 addition and 1 deletion.
    2 changes: 1 addition & 1 deletion debian-wvdial-ppp0-interface-autossh.markdown
    View file
    Original file line number Diff line number Diff line change
    @@ -4,7 +4,7 @@ Reverse proxy over 3G modem
    We will explain how to configure a cubieboard running debian as a reverese proxy.
    The modules that will be used are `wvdial` and `autossh`

    *Credits goes to:*
    **Credits goes to:**

    1. http://blog.rootshell.be/2015/02/19/my-little-pwnie-box/
    2. https://wiki.archlinux.org/index.php/3G_and_GPRS_modems_with_pppd
  19. @ziogaschr ziogaschr revised this gist Mar 5, 2015. 1 changed file with 2 additions and 1 deletion.
    3 changes: 2 additions & 1 deletion debian-wvdial-ppp0-interface-autossh.markdown
    View file
    Original file line number Diff line number Diff line change
    @@ -4,7 +4,8 @@ Reverse proxy over 3G modem
    We will explain how to configure a cubieboard running debian as a reverese proxy.
    The modules that will be used are `wvdial` and `autossh`

    Credits goes to:
    *Credits goes to:*

    1. http://blog.rootshell.be/2015/02/19/my-little-pwnie-box/
    2. https://wiki.archlinux.org/index.php/3G_and_GPRS_modems_with_pppd

  20. @ziogaschr ziogaschr revised this gist Mar 5, 2015. 1 changed file with 2 additions and 2 deletions.
    4 changes: 2 additions & 2 deletions debian-wvdial-ppp0-interface-autossh.markdown
    View file
    Original file line number Diff line number Diff line change
    @@ -5,8 +5,8 @@ We will explain how to configure a cubieboard running debian as a reverese proxy
    The modules that will be used are `wvdial` and `autossh`

    Credits goes to:
    1. http://blog.rootshell.be/2015/02/19/my-little-pwnie-box/
    2. https://wiki.archlinux.org/index.php/3G_and_GPRS_modems_with_pppd
    1. http://blog.rootshell.be/2015/02/19/my-little-pwnie-box/
    2. https://wiki.archlinux.org/index.php/3G_and_GPRS_modems_with_pppd

    1. Configure wvdial
    -------------------
  21. @ziogaschr ziogaschr revised this gist Mar 5, 2015. No changes.
  22. @ziogaschr ziogaschr revised this gist Mar 5, 2015. 1 changed file with 5 additions and 0 deletions.
    5 changes: 5 additions & 0 deletions debian-wvdial-ppp0-interface-autossh.markdown
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    @@ -11,6 +11,7 @@ Credits goes to:
    1. Configure wvdial
    -------------------
    Then edit your configuration to match your mobile operator requirements.

    `$ pico /etc/wvdial.conf`

    Mine looks like this:
    @@ -69,6 +70,7 @@ Mine looks like this:
    2. Start 3G connection at boot time.
    ------------------------------------
    It’s easy with debian, add the following lines in your `/etc/network/interfaces` file:

    `$ pico /etc/network/interfaces`

    TIP: place the below lines above `eth0` so as to be the default one
    @@ -144,6 +146,7 @@ Helper scripts for maintaining the connection always up
    =======================================================
    1. Add script that checks if 3G connection is active
    ----------------------------------------------------

    `$ pico /home/username/check-wan-status`

    The file needs to have the below contents:
    @@ -165,6 +168,7 @@ The file needs to have the below contents:

    2. Add script that check autossh status
    ---------------------------------------

    `$ pico /home/username/autossh-keep-alive`

    Please change the `AUTOSSH_SERVICE_NAME` with the name that you have set at step #5.
    @@ -185,6 +189,7 @@ The file needs to have the below contents:

    3. Add these files in crontab
    -----------------------------

    `$ crontab -e`

    Add the following in the crontab file:
  23. @ziogaschr ziogaschr revised this gist Mar 5, 2015. 1 changed file with 55 additions and 2 deletions.
    57 changes: 55 additions & 2 deletions debian-wvdial-ppp0-interface-autossh.markdown
    View file
    Original file line number Diff line number Diff line change
    @@ -94,7 +94,7 @@ TIP: place the below lines above `eth0` so as to be the default one
    ---------------------------------------------------------
    During boot the USB Dongle is not always available at the moment the network interfaces comes up. For that reason add this file that is being used from step 2 `/etc/network/interfaces` file.

    `pico /etc/ppp/wait-dialup-hardware`
    `$ pico /etc/ppp/wait-dialup-hardware`

    The file needs to have the below contents:
    ```
    @@ -125,7 +125,7 @@ The file needs to have the below contents:
    -----------------------------------
    The 3G USB modem is connected but one problem remains: If the Ethernet interface was already up with a default gateway, then no new default route will be added via the ppp0 interface. To fix this, the following file has to be modified: `/etc/ppp/peers/wvdial`.

    `pico /etc/ppp/peers/wvdial`
    `$ pico /etc/ppp/peers/wvdial`

    The modified file looks like this:
    ```
    @@ -139,3 +139,56 @@ The modified file looks like this:
    5. Setup an Autossh deamon
    --------------------------
    For setting up a deamon for autossh you can use [this script](https://gist.github.com/ziogaschr/74884b8d5095c86a7cef) that will create a service that will run on boot. You only have to set the script configuration values and call it.

    Helper scripts for maintaining the connection always up
    =======================================================
    1. Add script that checks if 3G connection is active
    ----------------------------------------------------
    `$ pico /home/username/check-wan-status`

    The file needs to have the below contents:
    ```
    #!/bin/sh
    #
    # Restart network interfaces
    # if ppp0 3G connection is down
    PING="/bin/ping -q -c1 -W 10 -I ppp0"
    HOST=8.8.8.8
    ${PING} ${HOST}
    if [ $? -ne 0 ]; then
    echo "3G (ppp0) network is down"
    (ifup ppp0) &
    fi
    ```

    2. Add script that check autossh status
    ---------------------------------------
    `$ pico /home/username/autossh-keep-alive`

    Please change the `AUTOSSH_SERVICE_NAME` with the name that you have set at step #5.

    The file needs to have the below contents:
    ```
    #!/bin/bash
    TUNNEL="/usr/sbin/service AUTOSSH_SERVICE_NAME"
    ${TUNNEL} status
    if [ $? -ne 0 ]; then
    echo "NO AUTOSSH DAEMON ACTIVE"
    sleep 120
    ${TUNNEL} start
    fi
    ```

    3. Add these files in crontab
    -----------------------------
    `$ crontab -e`

    Add the following in the crontab file:
    ```
    */10 * * * * /home/username/check-wan-status
    */10 * * * * /home/username/autossh-keep-alive
    ```
  24. @ziogaschr ziogaschr revised this gist Mar 5, 2015. 1 changed file with 84 additions and 5 deletions.
    89 changes: 84 additions & 5 deletions debian-wvdial-ppp0-interface-autossh.markdown
    View file
    Original file line number Diff line number Diff line change
    @@ -4,11 +4,16 @@ Reverse proxy over 3G modem
    We will explain how to configure a cubieboard running debian as a reverese proxy.
    The modules that will be used are `wvdial` and `autossh`

    Credits goes to:
    1. http://blog.rootshell.be/2015/02/19/my-little-pwnie-box/
    2. https://wiki.archlinux.org/index.php/3G_and_GPRS_modems_with_pppd

    1. Configure wvdial
    -------------------
    Edit the `wvdial.conf` file.
    /etc/wvdial.cong
    Then edit your configuration to match your mobile operator requirements.
    `$ pico /etc/wvdial.conf`

    Mine looks like this:
    ```
    [Dialer Defaults]
    New PPPD = yes
    @@ -25,8 +30,8 @@ Edit the `wvdial.conf` file.
    Init3 = AT+CGDCONT=1,"IP","internet"
    Phone = *99#
    Stupid Mode = 1
    *Check Def Route = yes*
    *Auto Reconnect = yes*
    Check Def Route = yes
    Auto Reconnect = yes
    [Dialer wind]
    Username = web
    @@ -59,4 +64,78 @@ Edit the `wvdial.conf` file.
    [Dialer 2]
    Modem = /dev/ttyUSB2
    ```
    ```

    2. Start 3G connection at boot time.
    ------------------------------------
    It’s easy with debian, add the following lines in your `/etc/network/interfaces` file:
    `$ pico /etc/network/interfaces`

    TIP: place the below lines above `eth0` so as to be the default one

    ```
    # start 3G connection
    # pre-up
    # wait for at max 20 seconds before connecting for the 3G stick to become connected at [ttyUSB0, ttyUSB1, ttyUSB2]
    # 3G stick might not be available immediately
    # wait 30 more seconds for the 3G connection to become active
    auto ppp0
    iface ppp0 inet wvdial
    provider vodafone
    pre-up /etc/ppp/wait-dialup-hardware ttyUSB0 20
    pre-up /etc/ppp/wait-dialup-hardware ttyUSB1 20
    pre-up /etc/ppp/wait-dialup-hardware ttyUSB2 20
    pre-up sleep 30
    post-up echo "3G (ppp0) is online"
    ```

    3. Add scripts that waits for USB to be connected on boot
    ---------------------------------------------------------
    During boot the USB Dongle is not always available at the moment the network interfaces comes up. For that reason add this file that is being used from step 2 `/etc/network/interfaces` file.

    `pico /etc/ppp/wait-dialup-hardware`

    The file needs to have the below contents:
    ```
    #!/bin/bash
    #INTERFACE="/dev/$(head -1 /etc/ppp/options-mobile)"
    INTERFACE="/dev/$1"
    MAX_SECONDS_TIMEOUT=$2
    dsec=$((${MAX_SECONDS_TIMEOUT} * 10))
    for ((retry=0; retry < ${dsec}; retry++))
    do
    if [ -c ${INTERFACE} ]; then
    echo "$0: OK existing required device ${INTERFACE} (in $((retry / 10)).$((100 * (retry % 10) / 10)) seconds)"
    logger "$0: OK existing required device ${INTERFACE} (in $((retry / 10)).$((100 * (retry % 10) / 10)) seconds)"
    break
    else
    sleep 0.1
    fi
    done
    if [ ! -c ${INTERFACE} ]; then
    echo "$0: ERROR timeout waiting for required device ${INTERFACE}"
    logger "$0: ERROR timeout waiting for required device ${INTERFACE}"
    exit 1
    fi
    ```

    4. Add route for ppp0 on connection
    -----------------------------------
    The 3G USB modem is connected but one problem remains: If the Ethernet interface was already up with a default gateway, then no new default route will be added via the ppp0 interface. To fix this, the following file has to be modified: `/etc/ppp/peers/wvdial`.

    `pico /etc/ppp/peers/wvdial`

    The modified file looks like this:
    ```
    noauth
    name wvdial
    usepeerdns
    defaultroute
    replacedefaultroute
    ```

    5. Setup an Autossh deamon
    --------------------------
    For setting up a deamon for autossh you can use [this script](https://gist.github.com/ziogaschr/74884b8d5095c86a7cef) that will create a service that will run on boot. You only have to set the script configuration values and call it.
  25. @ziogaschr ziogaschr created this gist Mar 5, 2015.
    62 changes: 62 additions & 0 deletions debian-wvdial-ppp0-interface-autossh.markdown
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,62 @@
    Reverse proxy over 3G modem
    ===========================

    We will explain how to configure a cubieboard running debian as a reverese proxy.
    The modules that will be used are `wvdial` and `autossh`

    1. Configure wvdial
    -------------------
    Edit the `wvdial.conf` file.
    /etc/wvdial.cong

    ```
    [Dialer Defaults]
    New PPPD = yes
    Dial Command = ATDT
    Dial Attempts = 1
    Modem = /dev/ttyUSB0
    Modem Type = Analog Modem
    ISDN = 0
    Baud = 460800
    Username = user
    Password = pass
    Init1 = ATZ
    Init2 = AT&F E1 V1 X1 &D2 &C1 S0=0
    Init3 = AT+CGDCONT=1,"IP","internet"
    Phone = *99#
    Stupid Mode = 1
    *Check Def Route = yes*
    *Auto Reconnect = yes*
    [Dialer wind]
    Username = web
    Password = web
    Init3 = AT+CGDCONT=1,"IP","gint.b-online.gr"
    [Dialer cosmote]
    Init3 = AT+CGDCONT=1,"IP","internet"
    [Dialer vodafone]
    Init3 = AT+CGDCONT=1,"IP","internet"
    [Dialer MF636]
    Modem = /dev/ttyUSB2
    [Dialer E169]
    Modem = /dev/ttyUSB0
    [Dialer E170]
    Modem = /dev/ttyUSB0
    [Dialer E220]
    Modem = /dev/ttyUSB0
    [Dialer 0]
    Modem = /dev/ttyUSB0
    [Dialer 1]
    Modem = /dev/ttyUSB1
    [Dialer 2]
    Modem = /dev/ttyUSB2
    ```