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Tag Archives: 2003
I had a VPN access setup through ISA server 2006 that allow remote access users with dial-in permission to access the internal corporate network and it was working fine for several months, and suddenly we found that the remote access users can successfully dial-in and authenticate with no problems but they can not access any internal network resources. I tried to monitor the connection though ISA server monitoring tool but I could not find any records related to it. Tried also to look in the Routing and Remote access service, the server event logging, also with no luck.
Tried to search on the internet and I found some post talking about the default gateway which gave me a hint.
I have reviewed what changes we made recently, and I found the problem.
Recently, we made another subnet for users separate from the servers subnet and there is a router route traffic between them, and we changes the DHCP server IP address to be in the new subnet with default gate way of the new subnet.
The ISA VPN client access setup was configured to assign IP addresses from the DHCP server of the new users subnet, and the IP address is given to the users with no problem, but we noticed that the default gateway of the VPN clients is the default gateway of the users subnet, and when they try to access internal network through ISA server they can not, that’s because the ISA server access the internal network through the servers gateway not the users gateway.
I solved the problem by changing the VPN configuration of the ISA server to assign the IP address from a static pool in the servers subnet instead of the DHCP server and the problem was solved.
“Backup” is a word every system administrator feel shake in his body when
someone mention something wrong about it. Every system , should have its
backup and backup/restore procedure. I will not get more into explain what
backup is and why it is important.
I remember when working with Windows NT 4.0 about 12 years ago how it forced us
to use backup on tapes, and how we must wait till the tape end catalog, and how
it took very long time to backup or restore, unless you had the budget to buy
special backup software. Also I remember how it was great when we found that
we can take an image of the entire disk using programs like Norton Ghost.
Fortunately , things are better now, if you did not get approval for buying
expensive backup software, you still can use automatic scheduled backup wit
archiving of old backup. Here I will present two simple solutions for windows
2003 & 2008 using what we already have in the server like NTBACKUP and WBADMIN.
Here, I will present two scripts to give you an idea about using the command
line backup tools and schedule to run on daily basis and an example of
Suppose that you have 2003 server (Server01) and you want to schedule backup for
System Drive C: , System State, and a data folder on Drive D:
1- Make a selection of what to back and save it as a selection file.
Start Windows Backup, or from the command prompt run ntbackup.exe (start
in advanced mode, not the wizard mode). Go to Backup Tab and
select Whole Drive C: and the folder in Drive D: and Do not forget to check the
2- From Job Menu, save your selection as a .bks file. E.g. D:\Scripts\Winbackup.bks
3- Suppose you will take backup every day to drive X: and you want to keep the
backups of yesterday and the day before yesterday accessible. Example, create
three folders in drive X: (Today, Yesterday, Old).
4- Create a batch file to execute ntbackup with the saved selection into Today
Folder, while keeping the backup of Yesterday and the day before:
del *.* /q
ren Yesterday Old
ren Today Yesterday
Then add the command to execute the NTBACKUP:C:\Windows\system32\NTBACKUP.EXE
backup “@D:\scripts\WinBackup.bks” /n “Server01” /d “Server01 %date% %time%”
/v:yes /r:no /rs:no /hc:off /m normal /j “Server01 Daily Backup” /l:s /f
5- Save the batch file into your “D:\scripts” folder
You can test the script by double click on the .bat file in windows explorer or
by opening the command prompt ( Start > run > cmd > press Enter) then type
You will notice that will create the folder “Today” in
X: then will create the backup file “Server01_Win.bkf”
inside it. After the backup finish, if you execute the batch file again, the “Today” folder
will be renamed to“Yesterday” and
a new Today folder will be created.
If you execute it once more, the “Yesterday” folder
will be renamed to “Old”,
and “Today” folder
will be renamed to “Yesterday”,
and so on….
By Executing this simple script you will have a full backup for the past three
days, you can increase the number of archives as you need by changing the
script. For example by creating folders with the names of week days.
6- Now schedule the DailyBackup.bat to run on daily basis at a specific time,
Let’s say you want it to be automatically executed everyday at 3:00 AM.
In windows 2003, open the Task Scheduler: Control Panel > Add Scheduled
Click Next, Then Click Browse and select the batch file you saved in step #5
Give a name to your scheduled Task, and select Perform this task Daily
Click Next to Select the Time to run the Task automatically
Click Next and Enter the Credentials of and Administrator or Backup Operator
Account, Click Next then Finish.
You can Review the Daily Backup Task report from the Log Viewer in Task
Scheduler, and The Backup Report from The report viewer in NTBACKUP.
Also, it is wise to copy the Created BKF file to an external Storage on Daily
In Part 2, I will explain hot to create a batch file with the WBADMIN backup
tool for windows 2008.