FAQ
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ZyWALL UTM Solution
G09. Does Anti-Virus, IDP or Anti-Spam inspect VPN traffic?
No. Since a VPN connection is already encrypted and secured, VPN traffic will not be scanned Anti-
Virus, IDP or Anti-Spam function in the current ZyNOS v4.00.
However, VPN traffic inspection will be supported in the forthcoming ZyNOS firmware release.
G010. Could I turn off the Anti-Virus+IDP, Anti-Spam or Content Filtering
feature after a successful activation?
Yes. You always can turn off the Anti-Virus+IDP, Anti-Spam or Content Filtering feature after a
successful activation.
G11. How to turn off the Anti-Virus+IDP, Anti-Spam or Content Filtering
feature after a successful activation?
To turn off a security feature, you need to log on to the ZyWALL's WebGUI.
From the navigation panel, click SECURITY ' IDP (or ANTI-VIRUS or ANTI-SPAM or CONTENT FILTER)
and clear the Enable check box.
G12. Is there any reason that forces user to turn off the Anti-Virus feature
on a ZyWALL UTM?
Disabling the Anti-Virus function on a ZyWALL depends on your network requirements.
With the Anti-Virus feature turned on, throughput will drop down to 3~4Mbps, which is more than
enough for a gateway device in most networks.
From our experience, users of security devices from other vendors often turn off the Anti-Virus
feature due to jitter or very low performance. These problems are almost non-existing with our
ZyWALL which maintains superb network performance even with all security features turned on.
Please refer to the lab test report
G13. With ZyWALL's Anti-Spam feature, what's the recommended actions
against identified spam emails?
On the ZyWALL, you can either block or tag all identified spam.
If you choose to block them, you have no control over false-positives.
If you choose to tag them, you still have spam on your mail server and all network users have to
configure the e-mail program to filter the spam e-mails into a dedicated folder.
Since your ZyWALL (with the world-class Mailshell Anti-Spam technology) produces very low false-
positives, we recommend that you tag identified spam (the action chosen by most IT managers).
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