User’s Guide
211
Understanding iDAT Technology
12=40554056.UPD
For this example, suppose you have .DAT version 4053 installed on your
computer and the current .DAT file release is version 4056. The
AutoUpdate utility can look in the DELTA.INI file to learn that it needs to
download the 10th, 11th, and 12th .UPD file releases to have all of the virus
definitions that the current .DAT file release does.
The entries in the Incremental Resolver table, meanwhile, translate the
sequential numbers from the Multiple Patch Table into actual filenames
that the AutoUpdate utility can download.
The DELTA.INI file also has checksum and other information that the
AutoUpdate utility can use to verify that files it downloaded have not
changed or become corrupted.
NOTE:
If an iDAT download fails for any reason, the AutoUpdate
utility will download and install a full .DAT update.
After it downloads the correct .UPD file, the AutoUpdate utility decodes the
existing .DAT files, patches the downloaded iDAT files into them, validates
the data, then re-encodes the newly updated .DAT files for use with your
software.
NOTE:
Because the iDAT files patch the existing .DAT files you may not
download the iDAT files through the AutoUpdate utility and use the
utility to save them for later updates. You can download the .UPD
packages independently from the Dr Solomon’s FTP site, however, and
save these files for later distribution. See
“Best practices”
below for
details.
What does Dr Solomon’s post each week?
Each week Dr Solomon’s posts a complete .DAT file update, along with a new
weekly iDAT update, and a new DELTA.INI file that has updated Multiple
Patch Table and Incremental Resolver entries. You can download these files
independently of the AutoUpdate utility for posting on your internal servers
from the Network Associates FTP site at:
ftp://ftp.nai.com/licensed/antivirus/datfiles/4.x/
IMPORTANT:
To connect to this site you must have a licensed customer
user name and password. The FTP site will not accept anonymous
connections.
Содержание DR SOLOMON S ANTI-VIRUS 8.5
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Страница 146: ...Using Dr Solomon s Anti Virus Administrative Utilities 146 Dr Solomon s Anti Virus ...
Страница 166: ...Installed Files 166 Dr Solomon s Anti Virus ...
Страница 184: ...Using Dr Solomon s Anti Virus Command line Options 184 Dr Solomon s Anti Virus ...
Страница 216: ...Understanding iDAT Technology 216 Dr Solomon s Anti Virus ...