ZyXEL Communications ZyWall USG20-VPN, Руководство пользователя

Страница: 444 / 683

Chapter 28 Anti-Spam
USG20(W)-VPN Series User’s Guide
444
28.5.1 The Anti-Spam Black or White List Add/Edit Screen
In the anti-spam Black List or White List screen, click the Add icon or an Edit icon to display the
following screen.
Use this screen to configure an anti-spam black list entry to identify spam e-mail. You can create
entries based on specific subject text, or the sender’s or relay’s IP address or e-mail address. You
can also create entries that check for particular header fields and values.
Figure 298
Configuration > UTM Profile > Anti-Spam > Black/White List > Black List (or White List)
> Add
The following table describes the labels in this screen.
Table 173
Configuration > UTM Profile > Anti-Spam > Black/White List > Black/White List > Add
LABEL DESCRIPTION
Enable Rule Select this to have the USG use this entry as part of the black or white list.
To actually use the entry, you must also turn on the use of the list in the corresponding
list screen, enable the anti-spam feature in the anti-spam general screen, and configure
an anti-spam policy to use the list.
Type Use this field to base the entry on the e-mail’s subject, source or relay IP address,
source e-mail address, or header.
Select Subject to have the USG check e-mail for specific content in the subject line.
Select IP Address to have the USG check e-mail for a specific source or relay IP
address.
Select IPv6 Address to have the USG check e-mail for a specific source or relay IPv6
address.
Select E-Mail Address to have the USG check e-mail for a specific source e-mail
address or domain name.
Select Mail Header to have the USG check e-mail for specific header fields and values.
Configure black list header entries to check for e-mail from bulk mail programs or with
content commonly used in spam. Configure white list header entries to allow certain
header values that identify the e-mail as being from a trusted source.
Mail Subject
Keyword This field displays when you select the Subject type. Enter up to 63 ASCII characters of
text to check for in e-mail headers. Spaces are not allowed, although you could
substitute a question mark (?). See
Section 28.5.2 on page 445 for more details.
Sender or Mail
Relay IP Address This field displays when you select the IP Address type. Enter an IP address in dotted
decimal notation.
Sender or Mail
Relay IPv6 Address This field displays when you select the IPv6 Address type. Enter an IPv6 address with
prefix.
Netmask This field displays when you select the IP type. Enter the subnet mask here, if
applicable.
Sender E-Mail
Address This field displays when you select the E-Mail type. Enter a keyword (up to 63 ASCII
characters). See Section 28.5.2 on page 445 for more details.