Table 16-2 Predefined Services - ZyXEL Communications 10 User Manual

ZyWALL 10~100 Series Internet Security Gateway
FIELD
Insert
Move
Rule to (Rule
Number)
Click Apply to save your changes to the ZyWALL. Click Edit to create or edit a rule. 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.
SERVICE
AIM/New-ICQ(TCP:5190)
AUTH(TCP:113)
BGP(TCP:179)
BOOTP_CLIENT(UDP:68)
BOOTP_SERVER(UDP:67)
16-8
Table 16-1 Firewall Rules Summary: First Screen
Type the index number for where you want to put a rule. For example, if you type "6",
your new rule becomes number 6 and the previous rule 6 (if there is one) becomes
rule 7.
Click Insert to display this screen and refer to the following table for information on
the fields.
Select a rule's Index option button and type a number for where you want to put that
rule. Click Move to move the rule to the number that you typed. The ordering of your
rules is important as they are applied in order of their numbering.
Click a rule's option button and type the number for where you want to put that rule.

Table 16-2 Predefined Services

AOL's Internet Messenger service, used as a listening port by ICQ.
Authentication protocol used by some servers.
Border Gateway Protocol.
DHCP Client.
DHCP Server.
DESCRIPTION
means UDP port 53 and TCP port 53. Up to 128
(UDP/TCP:53)
DESCRIPTION
Creating Custom Rules