EPON ternyata banyak di ASIA

The PON technologies adopted for FTTH application vary depending mainly on the market. BPON is mainstream in North America, for instance, while EPON is widely supported in Asia. Data from Taiwan’s MIC reveal that global PON market is taken up 60 percent by EPON, 30 percent by BPON, and 10 percent by GPON. MIC estimated that in the next two or three years, 40 percent of worldwide PON technology will be dominated by EPON, 20 percent by BPON, and 40 percent taken by GPON. Players in Taiwan see an upgrade to GEPON technology, as GPON slowly broadens its market footprint.

The cost of constructing an FTTH platform varies based on the geographic environment and brand of equipment used. According to Taiwan’s CHT, a residential FTTH construction can cost about $920 per household, broken down into 48.5 percent construction and labor, 14 percent passive equipment, 30.5 percent active equipment and 7 percent cables and fiber optics.

In South Korea, the competition among EPON, GPON and WDM-PON remains heated, although EPON is mainstream. Hanaro Telecom supports GPON.

South Korea’s homegrown WDM-PON receives support from companies such as S-Infotech Co. Ltd, which specializes in WDM-PON. The cost of WDM-PON is almost doubled that of EPON and GPON, but WDM-PON is claimed to offer wider bandwidth, QoS and higher security. It can also support several protocols.

With WDM-PON yet to enter the global market, S-Infotech is focusing on the domestic South Korea market, but expects WDM-PON to gain traction as triple-play services come to the fore. South Korea’s new laws for IPTV services are also expected to help open the WDM-PON market. The near-future shift to realtime multimedia streaming from the current download and play business model for IPTV services offered by companies such as KT will require new equipment that supports more bandwidth. This, in turn, could drive demand for WDM-PON players.

Menghapus Virus Donal Bebek

Virus Donal Bebek dibuat menggunakan bahasa pemrograman Visual Basic dan terdeteksi sebagai VbWorm.QXE. Salah satu ciri khas virus ini adalah mengandung kata “Bulu Bebek”.

Bulu Bebek menyembunyikan folder/subfolder pada flash disk dan membut file duplikat sesuai dengan nama folder/subfolder tersebut untuk mengelabui user. Untuk membersihkannya, simak langkah berikut ini:

1. Sebaiknya putuskan komputer yang akan dibersihkan dari jaringan (jika terhubung ke Local Are Network/LAN).

2. Disable “System Restore” untuk sementara selama proses pembersihan berlangsung (jika menggunakan Windows ME/XP).

3. Matikan proses virus yang sedang aktif di memori, untuk mematikan proses virus ini gunakan tools pengganti taks manager seperti procexp, kemudian matikan proses virus yang mempunyai icon “Folder”. 

4. Repair registry Windows yang sudah diubah oleh virus. Untuk mempercepat proses tersebut salin script dibawah ini pada program notepad kemudian simpan dengan nama repair.inf. Jalankan file tersebut dengan cara:

* Klik kanan repair.inf
* Klik Install

[Version]
Signature=”$Chicago$”
Provider=Vaksincom Oyee

[DefaultInstall]
AddReg=UnhookRegKey
DelReg=del

[UnhookRegKey]
HKLM, Software\CLASSES\batfile\shell\open\command,,,”"”%1″” %*”
HKLM, Software\CLASSES\comfile\shell\open\command,,,”"”%1″” %*”
HKLM, Software\CLASSES\exefile\shell\open\command,,,”"”%1″” %*”
HKLM, Software\CLASSES\piffile\shell\open\command,,,”"”%1″” %*”
HKLM, Software\CLASSES\regfile\shell\open\command,,,”regedit.exe “%1″”
HKLM, Software\CLASSES\scrfile\shell\open\command,,,”"”%1″” %*”
HKLM, SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon, Shell,0, “Explorer.exe”
HKLM, SYSTEM\ControlSet001\Control\SafeBoot, AlternateShell,0, “cmd.exe”
HKLM, SYSTEM\ControlSet002\Control\SafeBoot, AlternateShell,0, “cmd.exe”
HKLM, SYSTEM\CurrentControlSet\Control\SafeBoot, AlternateShell,0, “cmd.exe”
HKLM, SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\SuperHidden, UncheckedValue,0×00010001,1
HKLM, SOFTWARE\Microsoft\Command Processor, AutoRun,0,
HKLM, SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\Hidden\SHOWALL, CheckedValue, 0×00010001,1
HKLM, SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\Hidden\SHOWALL, DefaultValue, 0×00010001,2
HKCU, Software\Microsoft\Command Processor, AutoRun,0,

[del]

HKCU, Software\Microsoft\Windows\CurrentVersion\Policies\System, DisableRegistryTools
HKCU, Software\Microsoft\Windows\CurrentVersion\Policies\System, DisableTaskMgr
HKCU, Software\Microsoft\Windows\CurrentVersion\Policies\Explorer, NoFolderOptions
HKCU, Software\Microsoft\Windows\CurrentVersion\Policies\Explorer, NOFind
HKCU, Software\Microsoft\Windows\CurrentVersion\Policies\Explorer, NORun
HKCU, Software\Microsoft\Windows\CurrentVersion\Policies\WinOldApp
HKLM, SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\PAYXX.exe
HKCU, Software\Microsoft\Windows NT\CurrentVersion\Winlogon, Shell
HKLM, SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\Hidden\HideFileExt
HKLM, SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\Hidden\ShowFullPath
HKLM, SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\Hidden\ShowFullPathAddress
HKLM, SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\Hidden\SuperHidden
HKCU, Software\Microsoft\Windows\CurrentVersion\Policies\Explorer, NoFolderOptions
HKCU, Software\Microsoft\Windows\CurrentVersion\Policies\System, DisableRegistryTools

5. Cari dan hapus file duplikat yang dibuat oleh virus. Untuk mempercepat proses pencarian sebaiknya gunakan fungsi “Search Windows” dengan terlebih dahulu menampilkan file yang disembunyikan.

Jika Folder Option belum muncul, sebaiknya LogOff komputer terlebih dahulu kemudian tampilkan file yang tersembunyi. Setelah file duplikat ditemukan, hapus file yang mempunyai ciri-ciri:

• Menggunakan icon Folder
• Ukuran file 53 KB
• Ekstensi EXE
• Type File “Application”

6. Tampilkan kembali file/folder pada Flash Disk yang sudah disembunyikan. Untuk menampilkan file yang disembunyikan, Anda dapat menggunakan bebarapa tools alternatif seperti Batch File Utility atau dengan menggunakan perintah ATTRIB.

Berikut cara menampilkan file/folder yang disembunyikan dengan menggunakan ATTRIB:

• Klik “Start”
• Klik “Run”
• Ketik “CMD”, kemudian tekan tombol “Enter”
• Pindahkan posisi kursor ke drive Flash Disk
• Kemudian ketik perintah ATTRIB –s –h –r /s /d kemudian tekan tombol “enter”

7. Untuk pembersihan optimal dan mencegah infeksi ulang scan, dengan antivirus yang up-to-date dan sudah dapat mendeteksi virus ini.