We help IT Professionals succeed at work.

ISA always goes down.  All webpage can not load.

989 Views
Last Modified: 2013-11-16
Running ISA  Enterprise  version on Windows 2003 server.   ISA always goes down, so all ports are closed.   Then all webpages can not load.  ISA shows that "unable to retrieve data from:webserver".

In system log, it show that server got "half scan attack".

Before ISA goes down, there are always so MSFTPSVC Warning in system log.  
Event ID: 110
The server was unable to add the virtual root '/remotetek.com' for the directory 'C:\Webspace\support\remotetek' due to the following error: The system cannot find the file specified.  The data is the error code.

Event ID: 110
The server was unable to add the virtual root '/remotetek' for the directory 'C:\Webspace\support\remotetek' due to the following error: The system cannot find the file specified.  The data is the error code.

Event ID: 110
The server was unable to add the virtual root '' for the directory 'C:\Webspace\support\eavakyan' due to the following error: The system cannot find the file specified.  The data is the error code.

Event ID: 110
The server was unable to add the virtual root '/kdearden' for the directory 'C:\Webspace\nonprofitwebhosting\kdearden' due to the following error: The system cannot find the file specified.  The data is the error code.

The server was unable to add the virtual root '/benjiesautosales' for the directory 'C:\Webspace\support\benjiesautosales' due to the following error: The system cannot find the file specified.  The data is the error code.

The server was unable to add the virtual root '/atlasliquors' for the directory 'C:\Webspace\support\atlasliquors' due to the following error: The system cannot find the file specified.  The data is the error code.

The server was unable to add the virtual root '/ancientnumismatics' for the directory 'C:\Webspace\support\ancientnumismatics' due to the following error: The system cannot find the file specified.  The data is the error code.

The server was unable to add the virtual root '/amcomppro' for the directory 'C:\Webspace\support\amcomppro' due to the following error: The system cannot find the file specified.  The data is the error code.




Before ISA goes down, ISA takes a lot of memory.

Before ISA goes down, SQL server also takes a lot of memory.  

In services "Microsoft Firewall" is also start.    Since ISA is running, do I need Microsoft Firewall?  in firewall log there is an error message before ISA went down  "Microsoft Firewall logging can not connect to SQLserver.  

Right now, the server has 2G memory.

The server is fine before.   It start to have problem from last Thursday.   I have to reboot the server all the times.    By the way, after ISA goes down,   I can not restart it any more.

HELP!!!!!!
Comment
Watch Question

Graham N.Group MD
CERTIFIED EXPERT

Commented:
This is on the same server as your SPAM problem correct?

Author

Commented:
Yes.  
Keith AlabasterEnterprise Architect
CERTIFIED EXPERT
Top Expert 2008

Commented:
Open the task mananger - processes - which service is taking the memory? sqlservr.exe?
look at this link - it explains how to manually set the max memory the sql service can take.
http://www.mcse.ms/message1598572.html

Becareful with the half-scan attack as this can be misleading.
Open the gui - select configuration - general and look in the ips section. Turn off the half-scan option as vpn's and fragmented packets can fall foul of this

keith




Group MD
CERTIFIED EXPERT
Commented:
Unlock this solution and get a sample of our free trial.
(No credit card required)
UNLOCK SOLUTION
Keith AlabasterEnterprise Architect
CERTIFIED EXPERT
Top Expert 2008

Commented:
OK.

Author

Commented:
Thanks grahamnonweiler.   You are great.   The server is much faster now.  
Unlock the solution to this question.
Thanks for using Experts Exchange.

Please provide your email to receive a sample view!

*This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

OR

Please enter a first name

Please enter a last name

8+ characters (letters, numbers, and a symbol)

By clicking, you agree to the Terms of Use and Privacy Policy.