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1993-02-26
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NETSCAN Version 9.14V102
Copyright (C) 1989 - 1993 by McAfee Associates
All rights reserved.
Documentation by Aryeh Goretsky.
McAfee Associates (408) 988-3832 office
3350 Scott Blvd, Bldg. 14 (408) 970-9727 fax
Santa Clara, CA 95054 (408) 988-4004 BBS (25 lines)
U.S.A. USR HST/v.32/v.42bis/MNP1-5
CompuServe GO MCAFEE
InterNet support@mcafee.COM
TABLE OF CONTENTS:
WHAT'S NEW . . . . . . . . . . . . . . . . . . . . . . . . . .2
- New features and viruses in this release
- System Requirements
OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . .3
- Detection of known viruses
- Detection of new and unknown viruses
SYNOPSIS . . . . . . . . . . . . . . . . . . . . . . . . . . .4
- technical description of known virus detection
- technical description of new/unknown virus detection
AUTHENTICITY . . . . . . . . . . . . . . . . . . . . . . . . .5
- How to verify the NETSCAN.EXE program file
COMMAND SUMMARY. . . . . . . . . . . . . . . . . . . . . . . .6
- One-line description of switches
OPTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . .8
- Detailed explanation of switches
EXAMPLES . . . . . . . . . . . . . . . . . . . . . . . . . . .13
- Samples of frequently-used options
EXIT CODES . . . . . . . . . . . . . . . . . . . . . . . . . .13
- For running NETSCAN from batch files
VIRUS REMOVAL. . . . . . . . . . . . . . . . . . . . . . . . .14
- How to manually remove a virus
LICENSE. . . . . . . . . . . . . . . . . . . . . . . . . . . .15
- How to license NETSCAN
TECHNICAL SUPPORT INFORMATION . . . . . . . . . . . . . . . .15
- Information you should have ready when calling
OBTAINING THE LATEST VERSION OF NETSCAN. . . . . . . . . . . .16
- BBS, CompuServe, and Internet access to NETSCAN
APPENDIX A . . . . . . . . . . . . . . . . . . . . . . . . . .17
- Creating a virus string file with the /EXT option
APPENDIX B . . . . . . . . . . . . . . . . . . . . . . . . . .19
- Foreign Language Support
Page 1
NETSCAN Version 9.14V102 Page 2
WHAT'S NEW
Version 9.14V102 replaces 9.13V101, which was recalled
from distribution because of false alarms of the Parity virus
[Pvar].
NETSCAN Version 102 adds detection of all viruses detected
by the current version of VIRUSCAN that are capable of spreading
over a network.
Beginning with Version 100, we will start providing foreign
language support for VIRUSCAN, NETSCAN, and CLEAN-UP with an
external language file named MCAFEE.MSG. When the MCAFEE.MSG
file is present in the same directory as the NETSCAN.EXE file,
NETSCAN will automatically use the messages from the MCAFEE.MSG
file instead of the default English (American) messages in the
program. In order to accommodate this change, the /FR (French)
and /SP (Spanish) language switches have been removed and two
new files, FRENCH.MSG and SPANISH.MSG have been included with
this release. If you wish to use a foreign language, rename the
language file to MCAFEE.MSG. Support for other languages will
be added in the future.
SYSTEM REQUIREMENTS
NETSCAN requires 320Kb of RAM and DOS 2.0 or above (some
features require DOS 3.1 or above). NETSCAN works with 3COM
3/Share and 3/Open, Artisoft LANTastic, AT&T StarLAN, Banyan
VINES, DEC Pathworks, Microsoft LAN Manager, Novell NetWare, and
any other IBMNET or NETBIOS compatible network operating
systems. Contact McAfee Associates if you do not see your
network listed.
NETSCAN is designed to check network file servers for
viruses. For Novell NetWare/386 V3.11 networks, the NETSHIELD
NetWare Loadable Module is available for continuous, real-time
virus protection. For stand-alone and networked PC's please
use VIRUSCAN instead.
NETSCAN displays messages in English by default. Support
for a variety of foreign languages is available, see APPENDIX C
for details.
NOTE: WRITE-PROTECT THE FLOPPY DISK CONTAINING THE NETSCAN
(NETSCAN.EXE) PROGRAM BEFORE SCANNING TO PREVENT NETSCAN
FROM BECOMING INFECTED BY A COMPUTER VIRUS.
NOTE: FOR NETSCAN TO CHECK ALL AREAS OF THE FILE SERVER, IT
MUST BE RUN FROM AN ACCOUNT WITH GLOBAL READ AND FILESCAN
RIGHTS.
NETSCAN Version 9.14V102 Page 3
OVERVIEW (Known Virus Detection)
This version (filename NETSCAN.EXE) identifies all known
computer viruses and their variants identified by the
current version of VIRUSCAN which can be transferred over
a network.
NETSCAN can check a files, subdirectories, volume, or
network drive for pre-existing computer virus infections. It
will identify the virus infecting the system and the area where
it was found, giving the name of the virus as well as the I.D.
code used with CLEAN-UP to remove it.
Infected files can be removed with the /D switch in NETSCAN
to erase the file, or with the CLEAN-UP universal virus removal
(disinfection) program. CLEAN-UP is recommended because in most
cases it will eliminate the virus and fully restore infected
programs or system areas to normal operation.
The accompanying VIRLIST.TXT file lists describes all
viruses identified by NETSCAN and their associated I.D. codes
for removal by CLEAN-UP.
OVERVIEW (Unknown and New Virus Detection)
NETSCAN has three separate methods of detecting unknown and
new viruses:
■ Validation codes which can be periodically checked against
to look for the changes made by a virus to files or system
areas.
■ Generic and Family virus detectors to look for new viruses
which are derivatives of older viruses.
■ External virus signatures to insert new virus signature
strings on a temporary basis to NETSCAN.
NETSCAN Version 9.14V102 Page 4
SYNOPSIS (technical description of known virus detection)
NETSCAN detects known viruses by searching the system for
strings (sequences of bytes) unique to each computer virus and
reporting their presence if found. For viruses which encrypt or
cipher their code so that every infection of the virus is
different, NETSCAN uses detection algorithms (programs) that
work by statistical analysis, heurstics, or code disassembly.
SYNOPSIS (technical description of new/unknown virus detection)
NETSCAN checks for new or unknown viruses by comparing
files against previously-recorded validation (checksum) data
stored is a discreet log file.