ZyXEL Communications LTE3301-PLUS, User Manual

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Chapter 17 Firewall
Nebula Mobile Router User’s Guide
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17.4.1 Add Customized Service
Add a customized rule or edit an existing rule by specifying the protocol and the port numbers. Click
Add New Protocol Entry in the Protocol screen to display the following screen.
Figure 151 Security > Firewall > Protocol: Add New Protocol Entry
The following table describes the labels in this screen.
17.5 Access Control (Rules)
An Access Control List (ACL) rule is a manually-defined rule that can accept, reject, or drop incoming or
outgoing packets from your network. This screen displays a list of the configured incoming or outgoing
filtering rules. Note the order in which the rules are listed. Click
Security > Firewall > Access Control to
display the following screen.
Note: The ordering of your rules is very important as rules are applied in turn.
Ports/Protocol Number This shows the port number or range and the IP protocol ( TCP or UDP ) that defines
your customized service.
Modify Click this to edit a customized service.
Table 91 Security > Firewall > Protocol (continued)
LABEL DESCRIPTION
Table 92 Security > Firewall > Protocol: Add New Protocol Entry
LABEL DESCRIPTION
Service Name Type a unique name for your custom port.
Description Enter a description for your custom port.
Protocol Choose the protocol ( TCP , UDP , ICMP , ICMPv6 , or Other ) that defines your customized port from
the drop down list box.
Protocol Number Type a single port number or the range of port numbers ( 0 – 255 ) that define your customized
service.
OK Click this to save your changes.
Cancel Click this to exit this screen without saving.