ZyXEL Communications LTE5121, Руководство пользователя

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Chapter 12 Firewall
LTE-5121 User’s Guide
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Each field is described in the following table.
12.3.1 The Add New Services Entry Screen
Use this screen to configure a service that you want to use in an ACL rule in the Security >
Firewall > Access Control > Add New ACL Rule/Edit screen. To access this screen, click
Security > Firewall > Services and then the Add New Service Entry button.
Figure 87
Security > Firewall > Services > Add New Service Entry
Each field is described in the following table.
Table 47
Security > Firewall > Services
LABEL DESCRIPTION
Add New Service
Entry Click this to define a new service.
Name This is the name of a configured service.
Type This is the protocol type (TCP, UDP, ICMP or Others) of the service.
Port Number This displays a range of port numbers that defines the service.
Modify Click the Edit icon to edit the service.
Click the Delete icon to delete the service. Note that subsequent rules move up by one
when you take this action. Deleting a service rule also deletes the related ACL rules which
are configured in the Security > Firewall > Access Control screen.
Table 48
Security > Firewall > Services > Add New Service Entry
LABEL DESCRIPTION
Name Type a descriptive name for the service.
Type Select the protocol type (TCP, UDP or ICMP or Others) of the service.
Protocol
Number
Enter the protocol number of the service type.
Source Port,
Destination
Port The source port defines from which port number(s) the service traffic is sent. The
destination port defines the port number(s) the destination hosts use to receive the service
traffic.
Select Single if the service uses one and only one source or destination port, then enter the
port number.
Select Multiple if the service uses two or more source or destination ports, then enter a
port range. For example, suppose you want to define the Gnutella service. Select TCP type
and enter a port range of 6345-6349.