Review: Buffalo WZR-HP-G300NH-AP
Posted by Victor Tong in Product Review on June 6th, 2010
Buffalo WZR-HP-G300NH-AP
I bought this broadband router to replace my Linksys WRT54G (Patched w/ DD-WRT).
Before using a new router, I wonder my Internet access speed cannot be fully utilized due to the speed of the router.
After changing to new router, Internet browser response is difference. And it is very close to the direct connection to computer.
Features:
| • Designed to 802.11n specifications |
| • Wi-Fi Certified™ to insure compatibility with other certified devices |
| • Wireless connections up to 300 Mbps* |
| • MovieEngine™ QoS feature to prioritize streaming traffic |
| • Built-in AirShare™ Storage USB 2.0 Port |
| • BitTorrent™ client |
| • Web Access remote file access |
| • Wireless Distribution System (WDS): Extend your wireless network across access points’ |
| • Greater coverage compared to standard 802.11g |
| • Push-button setup with AirStation One-Touch Secure System™ (AOSS™) |
| • Enhanced multi-level security with WPA2, WPA-PSK (AES, TKIP) and 128/64-bit WEP |
| • Simple Web Browser configuration, no drivers needed |
| • Includes external switch to change between router and access point modes |
| • Adjustable flip-up antennas |
| • Built-in 4-port Gigabit Ethernet 10/100/1000 auto-sensing switch for up to simultaneous wired connections |
| • Built-in Gigabit WAN port |
Specification
Wireless LAN Interface
| Standard Compliance | IEEE 802.11n, IEEE 802.11g, IEEE 802.11b |
| Access Mode | Infrastructure mode |
| Antenna (Tx x Rx) | 3 x 3 |
| Wireless Security | WPA2, WPA-PSK (AES, TKIP), 128/64-bit WEP |
Wired LAN Interface
| Speed and Flow Control | 10/100/1000 Mbps, Auto Sensing, Auto MDIX |
| Number of LAN Ports | 4 x RJ-45 |
| Number of WAN Ports | 1 x RJ-45 |
USB Interface
| Standard Compliance | USB 2.0 |
| Connector Type | A type |
| Number of Ports | 1 |
Other
| Power Supply | External AC100-240V, 50/60 Hz |
| Setup Utility OS Support | Windows Vista® (32-bit), Windows® XP, Windows®2000 |
Comments:
1. Slim
2. Support VPN server
3. Fast
4. All Gigabit ports (including WAN port)
5. Support USB HDD
6. After upgrade firmware (I upgraded it to 1.74), it supports WDS
Issues:
1. I used it for 2 days, it has serious line drop issue w/ my home HGC 10MB ADSL broadband connection. Line will be dropped after running for 1 hour.
2. Every time having this issue, I need to reset my ADSL modem and broadband router.
3. I have tried different configuration and cannot fix the line drop issue.
4. I flashed it w/ DD-WRT firmware v24 preSP2 Build 14402. The Internet share performance is very poor and cannot be accepted. I reverted it to original firmware.
5. Finally, I give up using this broadband router w/ my home HGC 10MB ADSL broadband connection.
Microsoft Security Essentials (MS free antivirus software)
Posted by Victor Tong in Windows Infrastructure on March 25th, 2010
Just received e-letter from MS and it mentioned that MS has free AntiVirus software for Vista and Win7.
This software is called Microsoft Security Essentials.
I just installed. It looks good.
Reference:
Apple Magic Mouse VS Microsoft Laser Mouse
Posted by Victor Tong in Uncategorized on March 14th, 2010
Apple Magic Mouse VS Microsoft Laser Mouse
MS Courier vs Apple iPad
Posted by Victor Tong in Uncategorized on March 9th, 2010
Just researched in Internet and found that MS will have a new device “Courier”.
After watching “Courier” demo video, I want to express my feeling.
My feeling is MS is forcing their staffs to develop a new “fancy” device. I cannot feel that they are going to address existing living necessary.
Just Fancy, not friendly.
They are missing from fundamental thinking again. It is very disappointed to what MS did again.
If you used iPhone and Mac OS, you may understand why I have such feeling.
MS Courier video:
http://www.youtube.com/watch?v=pFQWc79TYcU
Backup Personal Certificate Store
Posted by Victor Tong in Windows Infrastructure on January 27th, 2010
Platform: Windows XP
Personal Certificate Store is stored in user profile instead of registry.
Location:
%userprofile%\Application Data\Microsoft\SystemCertificates\My\Certificates
Reference:
http://technet.microsoft.com/en-us/library/cc787544(WS.10).aspx
Certutil.exe – Check Personal Certificate Store
Posted by Victor Tong in Windows Infrastructure on January 27th, 2010
Certutil.exe can be found in Windows Server 2003 or Windows Server 2003 Administration Pack.
Following command and parameters can let you to query certificates stored in Personal Certificate Store.
That is very useful if you want to verify if user certificate deployed to user computer or not.
certutil -store -user My
Other Certificate Store reference information:
http://technet.microsoft.com/en-us/library/cc787544(WS.10).aspx
Reviews: Windows 7 Utlimate
Posted by Victor Tong in Uncategorized on January 16th, 2010
Before installing Windows 7, a lot of friends commented that. It is faster that Windows Vista and it has a lot of improvement that Windows Vista.
When my first touch to Windows 7, my feeling is “It is a Vista”.
After navigating it, it is a Vista. Not much different !!
For my Vista box, I have done a large amount of performance tuning to it. It includes Network and system tuning.
So, I cannot feel a big improvement when I use Windows 7.
I do not have an exciting feeling to Windows 7 as when I used Windows 2000 and Windows XP.
In Windows 2000 and Windows XP, it showed a lot of improvement for me. E.g. Kerbose, Windows Firewall, Remote Desktop.
In Windows 7, it seems facing bottleneck.
Overall comments:
1. If I can have choice, I will stay with WinXP
2. Win7 is an improved Window Vista. I don’t think it is a new version.
Reviews: Windows 7 – Virtual PC and WinXP Mode Comments
Posted by Victor Tong in Product Review, Windows Infrastructure on January 16th, 2010
Just have time to re-install my Vista box to Windows 7.
My initial planning is using Windows 7 Virtual PC for my PoC Lab testing.
After I have installed Win7 and configured the Virtual PC. I found that it is only support Win32 Virtual Machine.
I am very disappeared to it.
And the so-called killer feature “WinXP Mode”. My comment is “that is a marketing word”.
It is a monster for pushing customer moving to Win7.
The cost is very high to maintain 2 OSs for every users.
Overall comments:
1. The interface of Virtual PC for Windows 7 is not good
2. It does not support 64bit platform OS.
3. Monster “WinXP mode” sound attractive. But actually, it is quite difficult to maintain it.
Review: Hyundai ID-22FHD
Posted by Victor Tong in Product Review on December 31st, 2009
Hyundai ID-22FHD
Comments
1. Unstable, when I switch between different input sources, screen will be blanked occasionally. I need to power off and on it to resume the operation.
2. Incorrect resolution detection by using VGA D-Sub connector to connect computer.
3. On screen display menu is quite nice.
4. Built-in speak sound quality not good.
5. Price is very attractive.
6. Not include monitor driver for computer connection use.
Overall comments: Not good
Review: 3ware 9650SE-2LP
Posted by Victor Tong in Linux, Product Review on November 18th, 2009
Review: 3ware 9650SE-2LP
I just bought 3ware 9650SE-2LP for my Linux box.
I have tested CentOS 5.3 (x64) and Fedora 8 (x64). Both Linux default kernel included driver already.
It is very easy to use and configure.
My comments:
1. Easy to install for Linux
2. CLI for Linux is good
3. Performance is good
4. Firmware upgrade is easy
Overall comment is very good for Linux.
Reference:
http://www.3ware.com/products/serial_ata2-9650.asp
Linux: Disable check disk at start up
Posted by Victor Tong in Linux on October 17th, 2009
E.g. Disable check disk for /dev/sda1
tune2fs -c 0 -i 0 /dev/sda1
Edit /etc/fstab and modify last field to 0 instead of 1 or 2
/dev/sda2 / ext3 defaults 1 0 /dev/sda1 /boot ext3 defaults 1 0
VMware cannot use NAS for datastore
Posted by Victor Tong in VMware on October 3rd, 2009
If you are facing an error that you cannot use NAS (CIFS) for VMware Server datastore, you can change the service “VMwareServerWebAccess” Log On as from “Local System” to a local computer user account that have access right to your NAS.
VMware Server cannot run file larger than 2GB on NAS
Posted by Victor Tong in VMware on October 3rd, 2009
If you put VMware guest file on NAS, you may face a problem “File is too large”.
You can put the following option in vmx file to skip file size checking.
diskLib.sparseMaxFileSizeCheck= "false"
QNAP TS-419P (My new toy)
Posted by Victor Tong in Uncategorized on October 1st, 2009
I just bought QNAP TS-419P for storing my Lab files
My new Toys
1. QNAP TS-419P
2. Hitachi 1TB HDD x 4
Setup Screens:
My Comment:
1. Network file copy performance is very good.
2. It contains a lot of features.
3. iSCSI performance is very good too (~60 MB/sec)
Read text file for bulk folders creation
Posted by Victor Tong in Windows Infrastructure on September 27th, 2009
Text file name:
folders.txt : Content
folder_a folder_b folder_c
CreateFolders.bat
FOR /F "tokens=1 delims=" %%i IN (folders.txt) DO ( md %%1 ) pause
CreateFolders.bat will read file folders.txt and create folder_a,folder_b and folder_c for you.
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