Powertech Antivirus (formerly Stand Guard Anti-Virus) uses an FTP connection to download the most up-to-date virus definitions from McAfee, maker of the Antivirus scan engine. On May 31, McAfee is shutting down their FTP site and changing to an HTTP server.

To continue providing the same high level of antivirus protection, HelpSystems has made some changes to your Powertech Antivirus software.

Action Needed: To benefit from the newest features and to continue receiving the latest virus definitions, make sure your software is up to date. Powertech Antivirus 5.0 offers the ability automatically update these files using HTTP.

What else is new in Powertech Antivirus 5.0?

Powertech Antivirus 5.0 includes centralized dashboards through HelpSystems Insite. HelpSystems Insite is a no-cost addition to Powertech Antivirus that allows you to efficiently manage and configure software across your IT organization, as well as create dynamic dashboards for maximum visibility.

Other new features of this release include a new enterprise strength scanning engine for increased speed and performance, more robust automated reporting options, and additional data on the status of the antivirus environment.

If you are unable to update to Powertech Antivirus 5.0, you must manually acquire the virus definitions from McAfee. 

Acquiring Virus Definitions Using a Local Repository

Note: If you have upgraded to Powertech Antivirus 5.0, the following steps are not required.

The following procedure describes one way to download the required files from McAfee's HTTP server, then make them available to Powertech Antivirus using an FTP server, a local path, or a network path. (This example uses a Windows server, but an AIX or Linux server could be used instead.)

Before you begin, reconfigure the firewall of the system receiving the virus definitions from McAfee to allow HTTP downloads from http://update.nai.com. On that system, if FTP was previously open solely for the virus definitions download, close it.

Download the DAT Files Using a Windows PC

You can use a Powershell script to download the DAT files (Powershell is built into Windows 10). Schedule this process to run every day using Windows Task Scheduler.

  1. Copy the following text into Notepad and save the file as “getdats.ps1”:
    $url = 'http://update.nai.com/products/commonupdater/'
    Invoke-WebRequest $url'oem.ini' -OutFile 'oem.ini'
    $site = Invoke-WebRequest -UseBasicParsing -Uri $url
    $table = $site.links | ?{ $_.href.ToLower().Contains('avvdat-') } | sort href -desc | select href -first 1
    $filename = $table.href.ToString()
    Invoke-WebRequest $url$filename -OutFile $filename
    Expand-Archive -Force $filename .
    Rm $filename
  2. Copy the following text into Notepad and save the file as “getdats.bat”:
    PowerShell.exe -NoProfile -ExecutionPolicy Bypass -Command "& './getdats.ps1'"
  3. Open a command window and execute the batch file getdats.bat. This will execute the Powershell script to download and extract the appropriate .zip file from McAfee’s HTTP server into the current directory. Once completed the directory will be as follows:
    03/20/2019  11:45 AM    <DIR>          .
    03/20/2019  11:45 AM    <DIR>          ..
    03/20/2019  06:00 AM           829,681 avvclean.dat
    03/20/2019  06:00 AM           718,217 avvnames.dat
    03/20/2019  06:00 AM       102,961,854 avvscan.dat
    03/20/2019  11:26 AM                98 getdats.bat
    03/20/2019  11:45 AM               405 getdats.ps1
    03/20/2019  06:00 AM             8,170 legal.txt
    03/20/2019  11:45 AM             2,034 oem.ini
    		7 File(s)    104,520,459 bytes

Note: A method of monitoring the above process to ensure it is continuously running is recommended.

Make the DAT Files Available to Powertech Antivirus

  1. After you have downloaded the DAT files from McAfee, do the following to manually download oem.ini and the virus definition archive package to your local server:
    wget -O oem.ini http://update.nai.com/products/commonupdater/oem.ini
    wget -N http://update.nai.com/products/commonupdater/*.zip

    McAfee stores the latest two zip files in this folder. Ensure you have a process to manage this folder (i.e. purge old zip files) if this will be run as a cron job or scheduled event, as this folder could fill up quickly.

  2. Transfer oem.ini and the latest avvdat-xxxx.zip file to an empty directory on the remote server where Powertech Antivirus/Stand Guard Anti-Virus is installed (e.g. /home/user/dat).
  3. Run avupdate with the path option.
    v/avupdate --path /home/user/dat

See "Scheduling Updates and Scans" in the Powertech Antivirus Reference Manual for information on scheduling the DAT file update. HelpSystems recommends updating the virus definitions daily.

Still have questions? We can help. Submit a case to Technical Support.

Last Modified On: May 13, 2019