ZyXEL Communications ZYWALL 70 - V4.04 Uživatelský manuál stáhnout pdf (Strana 6)

FAQ

2.4

UTM Related

ZyWALL UTM Solution

III. You get flexible Anti-Spam filter sensitivity

Most Anti-Spam filter service providers do not allow you to change the spam threshold (an index

number to determine if an e-mail is spam or not), making the Anti-Spam filter either too sensitive

or useless for your network. With ZyWALL Anti-Spam, you can adjust the spam threshold to the

detection sensitivity that best fit your network environment.

IV. You get additional Anti-Spam fine-tuning control

You can set up blacklists (always block/tag) or white lists (always allow) to customize ZyWALL Anti-

Spam for your business needs. This, again, may not be a feature available for free from the other

Anti-Spam filter service.

All these reasons compel you to use ZyWALL Anti-Spam for added protection. So, why not?!

B11. What if the company mail server already does Anti-Spam, is there any

reason why I should still use ZyWALL Anti-Spam?

Yes, the reasons are:

I. Complementary filtering

The tagged-spam filtered by spam software will be tagged again by ZyWALL's Anti-Spam. But

those undetected spam emails can be detected by ZyWALL's Anti-Spam feature.

II. Phishing

Not every spam software can detect phishing emails. The Anti-Spam service of ZyWALL can detect

phishing emails.

B12.Can you give me a comparison of the current Anti-Spam solutions?

The following lists the four Anti-Spam solutions current on the market.

Anti-Spam filter service provided by e-mail service providers (such as Yahoo, Hotmail)

Gateway Anti-Spam filter (such as the ZyWALL)

Anti-Spam filter feature on mail servers (this may be on your corporate mail servers)

Client-based Anti-Spam filter (often a filtering program installed on individual computers)

The table below shows the differences between these Anti-Spam solutions.

1 2 3 4 5 6 7 8 9 10 11 ... 21 22

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ZyXEL Communications ZYWALL 70 - V4.04 Uživatelský manuál Strana 6