Showing posts from May, 2013

Outlook - Removing GMail Account from Outlook

Very often, you will want to remove your GMail account from your Outlook for various reason.

To remove GMail account completely. Do the following

1. Open your Outlook. Tools -> Account Settings.
2. At Account Setting, select your GMail account and click on Remove. Click on Yes on the confirmation dialog box.

3. The above steps only remove the account from Outlook. The PST file still exist in the system. So, for XP, you should go to C:\Documents and Settings\your_account_name\Local Settings\Application Data\Microsoft\Outlook. Delete all pst files that has your gmail account name. In this example, it is Please note that you need to show hidden file and folder in your Folder Options before your can see Local Settings folder

4. Empty your recycle bin

Outlook - Accessing and Synchronizing GMail to Outlook

Well.. Many many post in Google had discussed about this topic. My purpose of this post is to provide a tested instruction for my future referral.

The reason to access GMail in Outlook usually are

1. Single point of email access
2. Back up/synchronize Outlook email to and from GMail

In order to access GMail in Outlook, it is best to use IMAP protocol. So, you need to make sure your GMail account has IMAP enabled.

Below are the steps to setup GMail and Outlook

1. Log onto your GMail account
2. Go to Setting -> Forwarding and POP/IMAP. Make sure IMAP is enabled. Click Save Changes after you had enabled IMAP

3. Now, open your Outlook (tested on Outlook 2007)
4. Go to Tools -> Account Settings

5. At Account Settings, click on new

6. A wizard will be shown. Select "Microsoft Exchange, POP3, IMAP, or HTTP". Then click next

7. Click on the check box "Manually configure server settings or additional server types". Then click next

8. Select "Internet Email"…

DDoS in Action

Not sure if I should be excited, but, this is the first time I am experiencing DDoS on a VPN server. Now, my mind is all about my past infocomm security topic to think about how DDoS works.


The DDoS existed since 1998 and it is happening to me right now. In a nutshell, DDoS means that some adversary is using a BotNet (a large group of computers) to attack a single system to prevent access for legitimate users.

There are wide range of attacking method such as ICMP flood and TCP Syn flood. I will not discuss on the attack as they are widely discussed in Google.


Before my real experience, I always think that DDoS only affect a single system. But now, I know I am wrong.

An DDoS attack to my VPN server caused network congestion to my organization's 10Mbps Internet to slow down. The reason being is the BotNet is sending enormous amount of data in my network, and as a result, the Internet router is overloaded and caused the slow down in Internet as well.

So, if you encounter …

Big Data - Hadoop Overview

Starting to look into Big Data area and feel that I better look into Hadoop.

Big Data

Recently, everyone talk about big data and I am asking myself what is big data? Big databases and file system?

Gartner define Big Data as "Big data are high volume, high velocity, and/or high variety information assets that require new forms of processing to enable enhanced decision making, insight discovery and process optimization.

High volume refers to the ever glowing volume of data transaction. Data are in petabytes nowadays.

High velocity refers to the speed of processing required to process the data. Time-sensitive data analysis may requires speed of processing of data into seconds.

High variety refers the various type of data. Nowadays, data is not necessary to be structured. Unstructured data such as video stream, mouse click, sensor information, etc... are very common.

So, my understanding to big data is any data that is under the sun.

Why Hadoop?

This is the next question in my mind. W…