VBulletin spam registration Captcha

24/11/2010 at 2:41 pm | Posted in internet, security | Leave a comment

I am an administrator of several forums. From phpbb to vbulletin.  There has always been a problem with spammers registering to our forums. Then one day I see the light. I noticed that despite our countermeasures in place, namely captcha, they are able to register with ease.  And looking at the logs, it seemed obvious that they are able to automate and decipher the Captcha.  Don’t ask me how but these bots can.  So I tried changing the default Captcha settings and boy was there a drastic reduction in spam registration. But what really did it is when I use Question & Answer Verification instead of Captcha. I believe only available in VB4 onwards.

Spam registration is now a thing of the past and it feels great!

underpowered USB hardisk with Nokia charger

16/11/2010 at 3:47 pm | Posted in hardware, recommendation | Leave a comment

USB hardisk has brought about many conveniences to portable storage. it can transport amount larger than any thumbdrive or CF card out there.  However,  they require a bit of power to run the disk. Some machines, especially laptops may not be giving enough power and hence the disk fail at times when we needed them most. Most big disks like my 1 TB Maxtor USB/Firewire hardisk has their own separate power but small ones normally do not require any, or so it may seems.

Unfortunately, that is not true and I do have intermittent problems. This is solved when I discovered a power socket option on one of the portable hardisk I have. It’s actually the power socket for e-Sata option but my laptop does not have e-Sata. It says 5v. Coincidently, I have an old unused Nokia charger of 3v. I took the chance as the socket matches. Now, my laptop has no difficulty discovering and mounting the USB hardisk and has been running it reliably too during long data transfers. I have less fear of the disk losing connection now.

Virtualisation with VMware

29/10/2010 at 8:35 pm | Posted in Cloud, systems harmony | Leave a comment

I absolutely love it. If you have just 2 machines but you want to try different OS, then virtualisation is the way to go. There are 2 paths about it, one is using VMware while the other is using Virtual Box (opensource). I am using VMware since I already started using it before Virtual Box come to the picture.

I also realise I can also make my favourite desktop portable. I can use the same files created by windows, to be used on Macintosh and vice versa. So right now. I am making my ubuntu portable.  At work I use a Mac to run the ubuntu. Then when I am at home, I use windows 7 to run my ubuntu. How cool is that? But it wasn’t without its problems. That’s why I have this blog to remember the path I took before I reach the “it just works” stage.

NFS SMB Mac Windows Linux network File sharing

11/09/2010 at 9:59 pm | Posted in Mac, security, systems harmony, windows | Leave a comment

After much testing, I conclude that Windows file sharing (SMB or SAMBA) is slightly easier than with other OS.  Even so, SMB is not without it problems. You have to get everyone within the same workgroup for it to work.

A bit disappointed that NFS works well in unix/linux environment but flakey with Windows and OS X, but when it does, it work very well.

Fortunately, I can still manage to share files with SSH when I want to share files from Mac or Linux.

In the age of NAS, I would prefer simplicity. Just plug your hardisk using USB and format to the appropriate system.

How to create a mounted drive or change a drive letter

03/09/2010 at 5:50 pm | Posted in windows | 1 Comment

This is from Microsoft knowledgebase but with some additional stuff added by me.

To mount a volume:

  1. Click Start, click Run, and then type compmgmt.msc in the Open box.
  2. In the left pane, click Disk Management. you can also type DISKMGMT.MSC
  3. Right-click the partition or volume that you want to mount, and then click Change Drive Letter and Paths.
  4. Click Add.
  5. Click Mount in the following empty NTFS folder (if it is not already selected), and then use one of the following steps:
    • Type the path to an empty folder on an NTFS volume, and then click OK.
    • Click Browse, locate the empty NTFS folder, click OK, and then click OK.
    • If you have not yet created an empty folder, click Browse, click New Folder to create an empty folder on an NTFS volume, type a name for the new folder, click OK, and then click OK.
  6. Quit the Disk Management snap-in.

How to remove a mounted drive

// To remove a mounted volume:

  1. Click Start, click Run, and then type compmgmt.msc in the Open box.
  2. In the left pane, click Disk Management.
  3. Right-click the partition or volume that you want to unmount, and then click Change Drive Letter and Paths.
  4. Click the mounted drive path that you want to remove, and then click Remove.
  5. Click Yes when you are prompted to remove the drive path.
  6. Quit the Disk Management snap-in.

Show facebook thumbnail during share

28/07/2010 at 1:23 pm | Posted in internet | Leave a comment

In facebook, whenever I share a youtube video, the thumbnail will automatically appear. It gives the reader an idea what the video is about. Similarly if you want to share a website, a thumbnail will appear. This will make the reader curious and click the link further. However, there are times when there is no preview thumbnail appearing even when there are several pictures on the webpage.

There is a way around  this.  Here are 2 things you need to do on the website.

  1. make a thumbnail picture not more than 200px on the wide end. A square picture is ideal.
  2. put this meta tag < link rel=”image_src” href=”http://site.com/image.jpg&#8221; />  on the header (not body) of the page.  It also helps to have a “title”.

Paste the URL on the share facebook box and once the image has been read, press submit and you are done.

Windows 7 no/missing wallpaper

20/06/2010 at 1:57 am | Posted in windows | Leave a comment

You are probably not using a legit Windows 7 and it nags too so you know it. This “Windows Genuine Advantage” working to deter you from not paying Microsoft. The way I see it, there is no real advantage is using Microsoft original.  Using windows is already a disadvantage as compared to using Ubuntu or Mac but I’ll save that for another posting.

The solution is to look for “Windows 7 RemoveWAT by Hazar”. It came in several versions so get the latest one.  At the point of this writing, its ver. 2.2.5. Run it and disable automatic update. There will be peace on earth.

Disclaimer. I don’t use Windows 7 a lot but I have it in my Mac bootcamp. I don’t like paying for what I don’t need but its sure is interesting to know what the hype is all about.

Delete or remove msdrive.exe ccdrive recycler virus trojan

20/04/2010 at 11:59 am | Posted in security, windows | Leave a comment

I`m quite surprised that I got this virus on my XP.  I’ve never use anti-virus software because so far, I am able to remove them by hand.  Tried to google it but this seems like a rare one. Anyway… what this virus do is reside in your recycler bin and it will send out spam to vulnerable SMTPs. At a later stage, it will morph into ccdrive.exe and ????.exe where ? = random numbers.

Attempts to delete it from registry will fail because the virus will re-enter MSDRIVE.EXE into your registry again. To make matters worst, it will load the virus on USB drive if you set autorun to be on. It will download from the internet if it cannot find the files needed.  In other words, it will continually rebuild itself unless you can prevent it from running.

Running the taskmanager, you will not see anything suspicious. MSDRIVE.EXE is not listed. This is because explorer.exe is running the virus on it’s behalf. So in order to delete MSDRIVE.EXE from the recycler bin, you have to terminate EXPLORER.EXE.  Terminating  EXPLORER.EXE will render windows unusable but that’s ok as long as you are able to delete the pesky virus.  Once done, restart your XP.

Upon restart, you will find explorer working as per normal and msdrive.exe gone. Just to keep things neat, make sure there are no MSDRIVE.EXE in your registry.  Mission accomplished.

Windows XP CD DVD-ROM drive missing

05/04/2010 at 2:54 am | Posted in windows | Leave a comment

Is your CD-ROM or DVD drive missing  for no apparent reason? It could be because of a new program installation or even a windows upgrade. First, check that the BIOS detects the drive and you can see the power is on and it is connected.

From my knowledge it also affect Vista and Windows 7 as well. Even virtual drives of Daemon tools or  Magic ISO is affected. Don’t bother going to Microsoft for a fix because their fix doesn’t work. This one does for most of us however it does require some registry editing knowledge. Here are the steps to restore the drives.

  1. Run regedit
  2. Registry Key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class
  3. Key Name: {4D36E965-E325-11CE-BFC1-08002BE10318}
  4. Note : there the key also applies to other devices so choose only the one pertaining DVD drive
  5. Value Data: [Delete All Value Data from UpperFilters and LowerFilters]
  6. Exit Registry and Reboot

Remove or delete links from Mac Finder Places sidebar

24/03/2010 at 4:26 am | Posted in Mac | 1 Comment

Being a new user to Mac OSX, I tried creating shortcuts on the finder by dragging folders into the places sidebar. Problem is, a few months later, those folders don’t exist anymore. With other folders that is existing, I can right-click and choose “Remove from Sidebar” but not these non-existing ones.

After a few hours, I found the solution. The trick is to drag these links or shortcuts away from Finder and the link is gone with a smoke effect. poof!

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