ZyXEL Communications LTE3301-PLUS, Руководство пользователя

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Chapter 17 Firewall
Nebula Mobile Router User’s Guide
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Figure 152 Security > Firewall > Access Control
The following table describes the labels in this screen.
17.5.1 Add New ACL Rule
Click Add new ACL rule or the Edit icon next to an existing ACL rule in the Access Control screen. The
following screen displays. Use this screen to accept, reject, or drop packets based on specified
parameters, such as source and destination IP address, IP Type, service, and direction. You can also
specify a limit as to how many packets this rule applies to at a certain period of time or specify a
schedule for this rule.
Table 93 Security > Firewall > Access Control
LABEL DESCRIPTION
Rules Storage Space
Usage This read-only bar shows how much of the Zyxel Device's memory is in use for recording
firewall rules. When you are using 80% or less of the storage space, the bar is green. When
the amount of space used is over 80%, the bar is red.
Add New ACL Rule Select an index number and click Add New ACL Rule to add a new firewall rule after the
selected index number. For example, if you select “6”, your new rule becomes number 7
and the previous rule 7 (if there is one) becomes rule 8.
# This field displays the rule index number. The ordering of your rules is important as rules are
applied in turn.
Name This field displays the rule name.
Src IP This field displays the source IP addresses to which this rule applies.
Dest IP This field displays the destination IP addresses to which this rule applies.
Service This field displays the protocol (All, TCP, UDP, TCP/UDP, ICMP, ICMPv6, or any) used to
transport the packets for which you want to apply the rule.
Action Displays whether the firewall silently discards packets ( Drop ), discards packets and sends
a TCP reset packet or an ICMP destination-unreachable message to the sender ( Reject ),
or allow the passage of ( Accept ) packets that match this rule.
Modify Click the Edit icon to edit the firewall rule.
Click the Delete icon to delete an existing firewall rule.