Enable World Mode

I have a -W 7921 wireless phone and -N 1242 autonomous wireless access point, it takes me some time to troubleshoot why it can't get connected. The answer is world mode. When you enable world mode, the AP adds channel carrier set information to its beacon. Client devices with world mode enabled receive the carrier set information and automatically adjust their settings.

Example
int dot11radio 0
world dot11d country-code US both

Crontab

Not sure if you are interested to know. Normally when we do a crontab -e to edit or crontab -l to view a file, the physical file is located inside /var/log/cron. If you are logon as root, the file is /var/log/cron/root.

Installing VMWare Workstation 6.0.2 on 2.6.24 Kernel

My environment: Redhat Linux FC8 x86_64
VMWare version: Workstation 6.0.2

Tried to install VMWare workstation 6.0.2 on my Linux box with 2.6.24 kernel running and failed. Here is a quick how-to on how to resolve it:

1. Got your VMWare workstation tarball: VMware-workstation-6.0.2-59824.x86_64.tar.gz
2. Untar it
3. vmware-player-distrib/vmware-install.pl - when it asks you to run vmware-config.pl answer NO
4. Download VMWare patch vmware-any-any-update-116.tgz
All VMWare patch files here: http://groups.google.com/group/vmkernelnewbies/files
5. Untar your tarball
6. Run runme.pl, and when it asks you to run vmware-config.pl, answer YES
7. You know what to do after this step. If you don't know how to do, visit here.

Snapshot on Sony SNC-RZ30P Camera

Like other surveillance cameras, Sony provides a simple way to take snapshots via HTTP.

Take snapshot:
http://cam_ip/home/Capture.html

Get the picture:
wget http://cam_ip/oneshotimage.jpg

Cisco Dogbot

LWAPP Join-Request does not include valid certificate CERTIFICATE_PAYLOAD

If you get this message, 90% of chance you've got the wireless lan controller date wrong. Do a "show time" and you will suprise! I saw that I am in the year of 2029 when I do a "show time" on WLC. Fix it and it will work.

Erase Lightweight access points configuration

Once your lightweight Aironet access points register with the Cisco wireless lan controller, you can't change the ip address and controller information via console. So if you want to move the LWAP from one controller to the other, and if you have static address configured. You will have trouble. To clear the LWAP configuration, you can console to the access point and do the following:

1. Disconnect the ethernet connections
2. "clear lwapp private-config"
3. If you see the errors "ERROR!!! Command is disabled", you still have another way. Do a "debug lwapp console cli"
4. write erase
5. reload

The First Time Machine

Discovery Science - The First Time Machine - Time Paradox

Taken from Discovery Channel documentary 'The First Time Machine'

Part 1


Part 2


Part 3

Using Gmail SMTP server

Gmail provides a free SMTP service that allow you to send mail from any ISPs and any email address. Letz do it together with thunderbird now.

1. Tools > Account Settings > Outgoing Server (SMTP)
2. Add > set the SMTP server to your_account@gmail.com
3. Make sure the "Use username and password" is checked.
4. Checked the "TLS" under "Use Secure Connection"

Shared Folder in VMWare

When using a virtual machine, you will find inevitable for the guest OS accessing the host OS, mostly for file sharing. VMWare provides a great way to do.

My environment: VMWare Workstation 6.0.2
Guest OS: Windows XP SP2 32-bit
Host OS: Windows Vista SP1 64-bit

1. On your VMWare Workstation console, choose VM > Settings > Options > Shared Folders

2. Pick "Always Enabled" if you want to make your shared folder always on your guest OS, and add the folder you want to share.

3. Install VMWare tools on your host OS by choosing VM > Install VMWare Tools on your VMWare Workstation.

4. Then you can access your host OS shared folder by:
\\.host\Shared Folders