I am a network administrator.

There always a lot end users or my friends who have a modem or router which they don’t know their password because the setting was set by ISP’s technician.
Once the Internet service is down, I always is the first person they ask for.
Fortunately, they always keep the default username and password.

A modem/router default password list is important to a network administrator/engineer.

It’s good to list down all the default username and password in my own blog.

I hope this default username and password list is helpful for you.

Below is the list of the default IP, username and password for TMnet Streamyx supported modem/router.

Streamyx (Malaysia) still have the major market share so I just only list down the modem/router supported Streamyx.
If you can’t find your modem  or router’s default username and password above.
You may find yours at the below sites

1. Default Password List – http://www.phenoelit-us.org/dpl/dpl.html
2. Router Passwords – http://www.routerpasswords.com/index.asp
3. Virus.Org Default Password Database – http://www.virus.org/default-password

*ISP : Internet Service Provider

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I have a FACT Accounting for Windows in my environment which is our old accounting system.

We are going to write off all the WinNT and migrate to linux in our environment and it is at the final stage of the migration.
We turn off all the power for power maintenance during last Christmas day.

One of the machine which work as the FACT license server said bye bye to us (failed to power on).
All the clients failed to access to the FACT Accounting for Windows system due to failed to find the license server as below.

What a headache for me, this license server is not setup by me and the person who setup it is not here anymore.
I have no idea at all with this license server so Google always is my good guru.

After googling I found several solutions.

Below is my successful solution.

I am using samba file server.
One day, a user told me that he failed to open a shared folder.
Every time he open the shared folder authentication will be prompt.
He still failed to open the shared folder even though he key in the correct user name and password.

After diagnosis I found this error in my /var/log/samba/winbindd.log

more /var/log/samba/winbindd.log
show me this:
idmap Fatal Error: UID range full!! (max: 20000)

Then I googling and finally find the solution. Google always is my GURU. Thanks Google.

Below are the step to fix this problem.

Stop your samba and winbind services

service winbind stop
service smb stop

Delete secrets.tdb and smbpasswd

rm /etc/samba/secrets.tdb
rm /etc/samba/smbpasswd
rm /var/cache/samba/winbindd_idmap.tdb

Ensure “winbind trusted domains only = no” if not just modified it in smb.conf

testparm -v | grep winbind
or
vi /etc/samba/smb.conf

Rejoin the domain

net rpc join -S SERVERNAME -U ADMINISTRATOR%ADMINPASSWORD

Restart winbind service

service winbind start

Ensure can get the user list from domain

wbinfo -u

Fetch list of user accounts and group accounts

getent passwd
getent group

Test the login from another workstation.
Solved!
Job Done!

When I try to renew an IP address I get this message

C:\>ipconfig /renew

Windows IP Configuration

An error occurred while renewing interface Local Area Connection : The RPC server is unavailable.

How can I solve this problem?

After googling I found that is caused by a file named iKernel.exe is missing.
This problem can be solved by just copy back this execute file to the path.

Solution:
1. Copy a iKernel.exe file from any computer and then paste to below location
C:\Program Files\Common Files\InstallShield\Engine\6\Intel 32\
2. Reboot your computer.
3. Done.

I had forgotten one of my Red Had Enterprise Linux 5 server’s root password.
What can I do? How can I retrieve or reset the root password?
After googling and tried one of the solutions.
My problem was solved.

The solution is boot into single-user mode from GRUB and then change the root password.

Below is the steps to reset root password.

1. Reboot your workstation, wait until the GRUB menu screen come out.
2. Select the desired kernel you want.
3. Press the ‘e‘ key to edit that entry.
4. Use the arrow keys to navigate to the kernel line
(for example: kernel /vmlinuz-2.6.x-x ro root=LABEL=/ rhgb quite)
5. Add the argument ‘single‘ to the end of the line and then press ENTER.
6. Press the ‘b‘ key to boot.
7. After booting, type ‘passwd‘ to change your root password.
8. The end, reboot your workstation and done.

Of cause, there are many others way to retrieve your root password.
The solution I give here is only one of the solutions.
Hope, my sharing can help you.

I am using Dell PowerEdge 1400SC. (It’s work for PowerEdge 1500SC as well.)
When I boot the server after pluging in another two 256MB Memory into the mother board.
This message was display.

Amount of available memory limited to 256 MB!
Strike the F1 key to continue, F2 to run the setup utility.

After couple minutes searching on Google, I found the answer already.

This is due to “OS Install mode” is enabled.

The solution is

Press F2 enter to BIOS setting
Turn off “OS Install mode”
Save Changes and Exit

F-Secure (formerly Data Fellows) is an anti-virus and computer security software company based in Helsinki, Finland and founded in 1988.

The company has large branch offices in the USA and Japan, where some antivirus analysis and software development work is also being undertaken.

== Software x-files ==
Name: F-Secure Online Virus Scanner
Language: English
License: Free
Official Site: http://support.f-secure.com/ols/start.html
http://www.f-secure.com/en_EMEA/security/security-lab/tools-and-services/online-scanner/index.html (The Latest Version)
Requirements: Microsoft® Internet Explorer 5™ or later with ActiveX enabled.

Dr. Web is an Anti-virus product from Russia. Dr. Web Anti-virus was developed since 1992.
You can scan your computer for viruses and other malicious and unwanted programs by using Dr.Web Online Scanner.The files submitted for online scanning will be checked by the latest version of the Dr.Web Anti-virus and the hottest add-on to the Dr.Web virus database.Upon the scanning, the resulting scan report will be displayed.

Dr.Web Online Scanner can only tell you whether or not the file(s) submitted by you are infected. But scanning of files will not give you the answer whether your PC is infected or not.

== Software x-files ==
Name: Dr. Web Online Scanner
Language: English
License: Free
Official Site: http://www.drweb.com/online/

Handy utility to print or save a list of files located in any folder. Right-click any folder in Windows Explorer and select “PrintFolder” in the popup menu.

== Software X-Files ==

Name: PrintFolder
Version: 1.3
Language: English
License: Free
Size: 547KB
Support OS: Windows 98/2000/XP/2003/Vista
Official Website: http://no-nonsense-software.com/
Download: Download 1