P-662H/HW-D Series User’s Guide
Chapter 12 Anti-Virus Packet Scan
205
This is an Internet file transfer service that operates on the Internet and over TCP/IP
networks. A system running the FTP server accepts commands from a system running an
FTP client. The service allows users to send commands to the server for uploading and
downloading files.
Note:
The anti-virus packet scan on the ZyXEL Device offers the first defense against
possible virus attacks on your network. It is not a replacement of the anti-virus
client software that you may install on network computers.
12.3.1 How the ZyXEL Device Virus Scan Works
The following describes the virus scanning process on the ZyXEL Device.
1
The ZyXEL Device first identifies the packet types (SMTP, POP3, HTTP and FTP
through standard ports only) from the network traffic.
2
If the packets are not session connection setup packets (such as SYN, ACK and FIN), the
ZyXEL Device records the sequence of the packets.
3
The scanning engine scans the content of the packet for virus.
4
If a virus pattern is matched, the ZyXEL Device “cleans” the virus by deleting the
infected packet and alerts the intended computer user(s).
Note:
Since the ZyXEL Device “destroys” a file by deleting the infected portion of the
file content, you cannot open the file.
12.3.2 Limitations of the ZyXEL Device Packet Scan
The ZyXEL Device does not scan the following types of file for virus:
• Compressed or zipped files
• Simultaneous file downloads (for example, when you use the FlashGet download
program).
• When a virus is detected, an alert message is displayed in Miscrosoft Windows-based
operation systems only.
1
12.4 Anti-Virus Packet Scan Configuration
Note:
Before you can use the anti-virus packet scan on the ZyXEL Device, you must
register for the anti-virus service in the
Registration and Virus Information
Update
screen (see the
section for more
information).
1. For Windows 98/Me, refer to the antivirus supplement for requirements.
Summary of Contents for 802.11g ADSL 2+ 4-Port Security Gateway HW-D Series
Page 2: ......
Page 10: ...P 662H HW D Series User s Guide 10 Customer Support ...
Page 24: ...P 662H HW D Series User s Guide 24 Table of Contents ...
Page 32: ...P 662H HW D Series User s Guide 32 List of Figures ...
Page 38: ...P 662H HW D Series User s Guide 38 List of Tables ...
Page 64: ...P 662H HW D Series User s Guide 64 Chapter 2 Introducing the Web Configurator ...
Page 84: ...P 662H HW D Series User s Guide 84 Chapter 4 Bandwidth Management Wizard ...
Page 108: ...P 662H HW D Series User s Guide 108 Chapter 5 WAN Setup ...
Page 122: ...P 662H HW D Series User s Guide 122 Chapter 6 LAN Setup ...
Page 156: ...P 662H HW D Series User s Guide 156 Chapter 8 DMZ ...
Page 202: ...P 662H HW D Series User s Guide 202 Chapter 11 Firewall Configuration ...
Page 210: ...P 662H HW D Series User s Guide 210 Chapter 12 Anti Virus Packet Scan ...
Page 214: ...P 662H HW D Series User s Guide 214 Chapter 13 Content Filtering ...
Page 232: ...P 662H HW D Series User s Guide 232 Chapter 14 Content Access Control ...
Page 238: ...P 662H HW D Series User s Guide 238 Chapter 15 Introduction to IPSec ...
Page 273: ...P 662H HW D Series User s Guide Chapter 17 Certificates 273 Figure 144 My Certificate Details ...
Page 292: ...P 662H HW D Series User s Guide 292 Chapter 18 Static Route ...
Page 304: ...P 662H HW D Series User s Guide 304 Chapter 19 Bandwidth Management ...
Page 308: ...P 662H HW D Series User s Guide 308 Chapter 20 Dynamic DNS Setup ...
Page 332: ...P 662H HW D Series User s Guide 332 Chapter 22 Universal Plug and Play UPnP ...
Page 338: ...P 662H HW D Series User s Guide 338 Chapter 23 System ...
Page 344: ...P 662H HW D Series User s Guide 344 Chapter 24 Logs ...
Page 350: ...P 662H HW D Series User s Guide 350 Chapter 25 Tools ...
Page 364: ...P 662H HW D Series User s Guide 364 Chapter 27 Troubleshooting ...
Page 368: ...P 662H HW D Series User s Guide 368 Product Specifications ...
Page 372: ...P 662H HW D Series User s Guide 372 Appendix C Wall mounting Instructions ...
Page 408: ...P 662H HW D Series User s Guide 408 Appendix F Wireless LANs ...
Page 420: ...P 662H HW D Series User s Guide 420 Appendix H Command Interpreter ...
Page 436: ...P 662H HW D Series User s Guide 436 Appendix L NetBIOS Filter Commands ...
Page 462: ...P 662H HW D Series User s Guide 462 Appendix M Internal SPTGEN ...
Page 484: ...P 662H HW D Series User s Guide 484 Appendix P Triangle Route ...