Predefined Services - ZyXEL Communications ZyXEL ZYWALL10 User Manual

FIELD
Click Apply to create a new firewall rule. New firewall rules are added at the end after existing
firewall rules. Click Edit to edit an existing filter rule. See section 16.5 for more details. Click Delete
to delete an existing firewall rule. Note that subsequent firewall rules move up by one when you take
this action. Click Help for online HTML help on fields in this screen

16.5 Predefined Services

The Available Services list box in the Rule Config(uration) screen (see Figure 16-4) displays all predefined
services that the ZyWALL already supports. Next to the name of the service, two fields appear in brackets.
The first field indicates the IP protocol type (TCP, UDP, or ICMP). The second field indicates the IP port
number that defines the service. (Note that there may be more than one IP protocol type. For example, look at
the default configuration labeled "(DNS)".
entries are supported. Custom services may also be configured using the Custom Ports function discussed
later.
Creating Custom Rules
DESCRIPTION
(UDP/TCP:53) means UDP port 53 and TCP port 53.Up to 128
ZyWALL 10 Internet Security Gateway
OPTIONS
16-7