Chapter 28 Anti-Virus

"Since the ZyWALL erases the infected portion of the file before sending it, you may not be able to open the file.

Notes About the ZyWALL Anti-Virus

The following lists important notes about the anti-virus scanner:

1The ZyWALL anti-virus scanner can detect polymorphic viruses.

2When a virus is detected, an alert message is displayed in Microsoft Windows computers. Refer to Appendix C on page 819 if your Windows computer does not display the alert messages.

3Changes to the ZyWALL’s anti-virus settings affect new sessions (not the sessions that already existed before you applied the changed settings).

4The ZyWALL does not scan the following file/traffic types:

•Simultaneous downloads of a file using multiple connections. For example, when you use FlashGet to download sections of a file simultaneously.

•Encrypted traffic. This could be password-protected files or VPN traffic where the ZyWALL is not the endpoint (pass-through VPN traffic).

•Traffic through custom (non-standard) ports. The only exception is FTP traffic. The ZyWALL scans whatever port number is specified for FTP in the ALG screen.

•ZIP file(s) within a ZIP file.

Finding Out More

•See Section 5.4.14 on page 118 for related information on these screens.

•See Section 28.7 on page 480 for anti-virus background information.

28.1.3Before You Begin

•Before using anti-virus, see Chapter 8 on page 185 for how to register for the anti-virus service.

•You may need to customize the zones (in the Network > Zone) used for the anti-virus scanning direction.

28.2 Anti-Virus Summary Screen

Click Anti-X> Anti-Virusto display the configuration screen as shown next.

 

471

ZyWALL USG 100/200 Series User’s Guide