ZyXEL Communications ZYWALL 70 - V4.04 Manual de usuario descargar pdf (Pagina 22)

Hands-on

FAQ

2.4

ZyWALL UTM Solution

G14. What's the specification of the ZyNOS v4.00 Anti-Spam feature?

G15. How reliable is the detection rate of the ZyWALL's Anti-Spam feature?

Reliability rate: 98%, 10% higher than Open Source SpamAssassin.

G16. How do I keep the Anti-Spam signatures updated?

Currently, with ZyNOS v4.00, there is no local spam signature database stored on the ZyWALL UTM

devices. As a result, you don't have to update the Anti-Spam signature on your ZyWALL. The Anti-

Spam score and queries between Anti-Spam-enabled ZyWALL devices and the external rating server

take place dynamically and automatically in the background.

However, you may want to maintain your own black list/white list on the ZyWALL to maximize the

effectiveness of the Anti-Spam security service.

G17. How do I keep the Content Filtering database updated?

Currently, with ZyNOS v4.00, there is no local Content Filtering signature database stored on the

ZyWALL devices.

As a result, you don't have to update the content filtering database on the ZyWALL devices. The

queries between Content Filtering-enabled ZyWALL devices and an external database server take

place dynamically and automatically in the background.

However, you may want to maintain your own URL/keyword list on the ZyWALL to maximize the

effectiveness of the Content Filtering service.

Supported

protocols

Actions on spam

Default Setting

POP3 and SMTP

For POP3: Spam tagging

For SMTP: Spam tagging or blocking

Enable Tag with the [SPAM]/[PHISHING] subject

Specifications of Anti-Spam feature

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ZyXEL Communications ZYWALL 70 - V4.04 Manual de usuario Pagina 22