28 november 2014

View photos that are stored on you Linux Mint Pc on your Android tablet

How to view photos on a tabled (photos are stored on a PC)

I currently use Linux Mint as desktop PC and an Android tablet.
My photos are stored on the desktop PC, but I wanted to view them also on my tablet.

This is what I did:

  1. On the Linux Mint desktop PC : download system-config-samba
  2. Start this program and click on the + to add a directory (in my case: /mnt/data/Our Pictures)
    1. On the Basic tab :
      1. Directory : /mnt/data/Our Pictures
      2. Share name : Our Pictures
      3. [x] Visible
    2. On the Access tab : [x] Allow access to everyone
      If you want a more secure access, you can choose to allow access to specific users
  3. On the Android tablet: Go to the Play Store and Search for "smb client"; Download (and install of course) ES File Explorer File
  4. Start ES File Explorer
  5. On the top left click on the 3 hor. bars to display the menu and choose "Network" > Lan
    Click on the + (New):
    1. Server: /Our Pictures e.g. 192.168.1.3/Our Pictures
    2. [x] Anonymous
    3. Display as : Our Pictures on my desktop PC
  6. Now if you click on "Our Pictures on my desktop PC" you'll see the files  on the desktop pc
References:

23 maart 2013

Down the mountain with my new Nokia Lumia 800 (Stabilized)

How to turn a shaky movie made with a Nokia Lumia 800 into a much better (stabilized) experience.


The video has been modified with the YouTube standard image stabilization because it's a very shaky film
You can also watch the original to compare the result.
Search for "nokia lumia 800 stabilizer" on youtube if the link does not work.

P.S. The film is not mine, I just place a link to it from my blog. All rights belong to the person who originally uploaded the movie on youtube.

01 maart 2013

Windows 7 startup slowly at home

Windows 7 takes a long time to start at home


Problem

When I am not connected to the LAN at work, windows 7 takes a long time to startup while displaying "Waiting for the User Profile Service"

Solution

Thanks to Chris Buchanan, I have found the solution at http://www.chrisbuchanan.ca/Blog/Lists/Posts/Post.aspx?ID=17

What you need to do is to change the Local Group Policy setting the max. wait time for the network ... to 0

Procedure:


  1. Start  > gpedit.msc
  2. Computer Configuration > Administrative Templates > System > User Profiles
  3. Edit the policy "Set maximum wait time for the network if a user has a roaming user profile or remote home directory" to "Enabled" and set the value Wait for network for maximum (seconds) to 0.
  4. OK
  5. Close policy editor
  6. Then force an update of the group policy (gpupdate /force) (this worked only when I was connected to the LAN at work)

Since I did this, the startup time decreased from more than 1 minute to 20 sec. on my Dell XPS 15z (Core i7) laptop.

More details can be found  at http://www.chrisbuchanan.ca/Blog/Lists/Posts/Post.aspx?ID=17


02 november 2012

Connecting Mobile Phone through Portable PC


Connect your smartphone to the internet via your portable


So, I got myself a new smartphone (with Windows Phone7.5) (Nokia Lumia 800).

At some places I have no wireless network available, but I still want to reach the internet via my smartphone.

This is possible if
  • you have a portable PC with Intel My WiFi Technology
  • your portable is connected to the Internet
  • you follow the configuration instructions below





Configuration instructions:

On your Portable PC (which is connected to the internet):


  1. Start - Network and Sharing center
  2. Change adapter settings
    Change Adapter Settings
    Change Adapter Settings
  3. Choose your interface (which is connected to the internet)
    e.g. Wireless Network home or Local Area Network

    Interface with Internet access
  4. Doubleclick this interface and choose Properties
  5. Tab Sharing
    • [x] Allow other network users to connect through this computer's Internet Connection
      Home networking connection: choose the correct name e.g. PC37Dhotspot
  6. PC37Dhotspot - Microsoft Virutal WiFi Miniport Adapter @2) : 192.168.137.175
    • Assign PC37Dhotspot IP address 192.168.137.175 netmask 255.255.255.0

  1. Start - Intel My WiFi Utility
  2. Options

    Options
  3. General
    [x] Autom. enable Intel My WiFi Technology on system startup
    [x] Show taskbar icon
  4. Notifications
    [x] Notify when devices connect to this computer
    [x] Notify when devices disconnect from this computer
    [x] Nofify when new devices try to connect to this computer
  5. DHCP
    assign your DHCP range to e.g.
    Start IP 192.168.137.173
    End IP 192.168.137.181
  6. Power
    Enable Intel My WiFi only when power source is
    [x] Any power source
    Autom. disabling: Never
  7. Profile
  8. Intel Wireless PAN (preset) - Edit Profile name : Intel Wiireless PAN
    SSID : D4B.....-..190 (choose your own SSID ;-)
    Security
    Security Type: WPA2-PSK
    Encryption Type: AES-CCMP
    Password: ....... (choose your own password)
    Sharing
    ICS and Bridging filter : Disabled
    DHCP and DNS : Enabled (at home) or Disabled (at work because other DHCP and DNS servers are available

Be sure Enabled is visible on the same line as the Options... Help links
Disable/Enable toggle

On your mobile


  1. Settings
  2. Wifi
  3. Switch to on by moving the slider to the right
  4. Find your SSID (D4B.....-..190) and tap on it to connect
  5. Wait a few seconds ... Connected should appear under the SSID

Now you can start using the internet on your mobile (traffic goes via your pc)

19 februari 2012

VirtualBox - Oracle VM - networking

I had some trouble finding a working solution for running Oracle ( ovm3 ) in Virtualbox 4.1.8 on Windows 7 Professional 64-bit.

After a while, I found this configuration works (at least the connection between Host and Guest) :


  1. After installing Virtualbox, an extra networking device appears : VirtualBox Host-only Network (1)
    (see Control Panel > Network and Inteternet > Network Connections > Change adapter settings)
    Host-only means you can only establish a connection between guest and host,  your guest will not be able to connect to e.g. the internet
  2. This adapter  (1)  has IP address 192.168.56.1
    (see Control Panel > Network and Inteternet > Network Connections > Change adapter settings > Select VirtualBox Host-Only network > Details
  3. Now change the settings of the virtual machine ovm3 in Oracle VM VirtualBox Manager:
    1. Select ovw3
    2. Click on Settings (and wait until the config is fully read)
    3. Click on Network and choose Adapter 1
      1. [x] Enable Network Adapter
      2. Attached to: Host-only Adapter
      3. Name: VirtualBox Host-Only Ethernet Adapter
      4. In the Advanced section I left the settings to their defaults:
        1. Adapter Type: Inter PRO/1000 MT Desktop (82540EM)
        2. Promiscuous Mode: Deny
        3. Mac address .....
        4. [x] Cable connected
  4. Start the virtual machine ovm3
  5. Configure the network settings as follows:
    1. System > Administration > Network
    2. Enter password for root
    3. Tab Devices : select eth0 and click on Edit
      1. Statically set IP address:
        1. Address: 192.168.56.56   (or another in range 192.168.56.x)
        2. Subnet mask: 255.255.255.0
        3. Default gateway: 192.156.56.1
    4. Tab Hosts: I entered the same IP (..56) for the current hostname (don't know if this is really necessary)
  6. Save this configuration: File > Save
  7. Go back to tab Devices , click on Deactivate and Activate to finalize the network setup 
  8. Now you should be able to ping 192.168.56.56 and 192.168.56.1:
    Applications > Accessoires > Terminal
    ping 192.168.56.56     ...  OK
    ping 192.168.56.1    ...  OK
    pinging other IP addresses won't work because we are using the host-only  configuration in VirtualBox.
  9. Test login OVM console:
    From e.g. Internet Explorer in Windows:
    http:192.168.56.56:7001/ovm/console
    Login as admin/Welcome1
  10. Test sql*plus
    In ovm3: start sql*plus and login as ovs/Welcome1@XE
    Also working :
    -  connect system/Welcome1@XE
    - connect sys/Welcome1@XE as sysdba
  11. Start Oracle Application Express
    http://localhost:8080/apex/apex_admin
    Login als admin/Welcome1 ... je moet onmiddellijk je paswoord wijzigen (Welkom9!)

  12. Login as sys/Welcome1
    Create a new database user:
    Database username: mvr
    Application username: mvr
    Password: Welcome1
    Create Workspace mvr
    Manage workspaces > mvr > Manage developers and users > create/edit user mvr en ken paswoord toe
    Use http://localhost:8080/apex to login workspace mvr username admin password Welkom9! .. lukt niet (ook niet als user mvr)

    Oeps ... I can't yet connect  to http://192.168.56.56:80/apex from Windows
    (Might not be needed anymore, because the cause was the firewall, see further)
    EXEC DBMS_XDB.SETHTTPPORT(8080);exec dbms_xdb.setListenerLocalAccess (l_access =>FALSE)
    ;
    Solution: Disable the firewall in ovm3 (or add port 8080 to the exception list)
    System  > Administration > Security Level and Firewall > Firewall: Disabled
    Now I can use I.E. in Windows to use   http://192.168.56.56:8080/apex
  13. Accessing APEX from SQL*Developer
    1. Tried but failed:
      Hostname: 192.168.56.56
      Port 1521
      SID: XE
      Got error:
      Status: Failure - Test failed: IO Error: The Network Adapter could not establish the connection
    2. Solution:
      In ovm3:
      1. /etc/hosts:
        Verify/add 
        192.168.56.56   wwwdevpc37d.as.local    wwwdevpc37d
      2. In listener.ora and tnsnames.ora:
        replace localhost with   wwwdevpc37d.as.local 
      3. tnsping wwwdevpc37d.as.local
    3. In windows:
      1. c:\windows\system32\drivers\etc\hosts
        Verify/add 192.168.56.56 wwwdevpc37d.as.local
      2. In sql*developer add a Connection:
        Connection name: test1
        Username:sys
        Password: Welcome1
        [x] Save password
        Connection type: Basis  Role: sysdba
        Hostname: wwwdevpc37d.as.local
        Port: 1521
        SID: XE





  14. Info Listener.ora :
    su - root
    su - oracle

    .
    /u01/app/oracle/product/11.2.0/xe/bin/oracle_env.sh  (don't forget the point + space at the start of this line)

    locate listener.ora

    nano 
    /u01/app/oracle/product/11.2.0/xe/network/admin/listener.oralsnrctl status
  15. Finally got bridged network working. This way the guest machine also can reach the internet.
    (this works for me:)

    Make sure host and guest OS share the same network segment e.g. 192.168.1.*
    Use the correct interface in Settings > Network:
    In my case:
    Adapter 1 [x] Enable Network Adapter
    Attached to: Bridged Adapter
    Name: Intel(R) Centrino(R) Advanced-N 6230 (=my wireless network adapter of the host)
    Advanced (leave the defaults): Adapter Type: Intel PRO/1000 MT Desktop 58254OEM)
    Promiscuous Mode: Deny
    [x] Cable connected


    In the guest VM :
    Not a bad idea to record your ip address and hostname in /etc/hosts
    Assign IP address, gateway and DNS:
    System > Administration > Network
    Doubleclick the eth0 interface and fill out a static IP address, mask and gateway (same as your host)
    On the DNS tab, fill out the Hostname, DNS (same as your host or e.g. 8.8.8.8)

    File > Save
    Activate
  16. Nice link:
    http://devhub.fm/setting-up-an-oracle-11g-sandbox-dev-environment/
  17. Enterprise managerstart Oracle simply type “emctl start dbconsole” into the console .. does not work
    Probably because some environment variables need to be set correctly in emctl
    su - root
    su - oracle
    . ./setenv.sh
    locate emctl
    ... to be continued
    https://localhost.localdomain:1158/em/console/aboutApplication

10 februari 2012

GlobeSurfer Icon 7.2 USB stick - Windows 7 Prof. 64-bit - driver installation

Problem:
I encountered following problem when trying to use the WLAN USB stick of Mobistar on a Win 7 Pro 64-bit: the software did not install correctly.


Solution:
go to: http://www.option.com/en/support/software-download/mobile-devices-solutions/icon225/
download: GlobeTrotter® Connect 3.1 ( iCON® 225 )
version: 3.1d0-1162


Don't forget : in Belgium you need to use APN web.pro.be in order to connect to your work VPN.


Cause:
I guess the drivers that come with the Globetrotter Icon 7.2 are 32-bit, so they are not signed to use on 64-bit systems and fail to load.

18 augustus 2011

Hoe beveilig ik mijn PC

Hoe beveilig ik mijn windows PC tegen virussen ?

18/8/2011

Samenvatting

Als je onderstaande richtlijnen volgt, ben je al vrij goed beschermd tegen virussen, trojans en andere ongure programma's.
  1. Gebruik paswoorden van (minstens) 8 tekens
  2. Activeer Windows Update
  3. Installeer 1 anti-virus pakket
  4. Activeer de firewall
  5. Log niet met administrator rechten voor normaal dagelijks gebruik

In detail

  1. Gebruik paswoorden van (minstens) 8 tekens
    Log in als Administrator (Beheerder)
    Een paswoord aanmaken doe je in Control Panel - Users - Selecteer elke user en kies "Create password"
    Gebruik in je paswoord minstens 1 hoofdletter en 1cijfer (en liefst ook nog een speciaal teken zoals !#)
  2. Activeer Windows Update
    Control Panel - Automatic Updates
    Kies voor automatic updates (uur is van geen belang)
  3. Installeer 1 anti-virus pakket
    Gratis en makkelijk: Microsoft Security Essentials.
    Zoek in www.google.com naar
    "microsoft security essentials" site:microsoft.com
  4. Activeer de firewall
    Control Panel - Windows Firewall - Zorg ervoor dat de firewall On staat
  5. Log niet met administrator rechten
    Enkel als je programma's installeert, log je in als Administrator.
    Op andere tijdstippen, log je in als een "limited" user (die kan geen programma's installeren, maar wel uitvoeren).
    Een limited user aanmaken doe je in Control Panel - Users - Create user
    Geef de user een naam en kies voor "limited".
    Geef ook die user een paswoord (zie hoger)