Microweb PRO Series Installationsanleitung Seite 40

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Trend Micro™ InterScan™ Web Security Virtual Appliance 6.5 Installation Guide
2-12
F
IGURE
2-5.
Reconfiguring the Client Settings
Using a Layer 4 Switch
Transparency is the functionality whereby client users do not need to change their Internet
connections proxy settings to work in conjunction with IWSVA. Transparency is
accomplished with a Layer 4 switch that redirects HTTP packets to a proxy server,
which then forwards the packets to the requested server.
IWSVA supports the “simple” type transparency. Simple transparency is supported by
most Layer 4 switches. While it is compatible with a wide variety of network hardware
from different manufacturers, configuring simple transparency does impose several
limitations:
When using simple transparency, the User Identification method to define policies is
limited to IP addresses and host names; configuring policies based on LDAP is not
possible.
FTP over HTTP is not available; therefore, links to ftp:// URLs might not work if
your firewall settings do not allow for FTP connections. Alternatively, links to ftp://
URLs might work, but the files will not be scanned.
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