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Content Security Gateway User’s Manual
Removing a DMZ Group:
Step 1. In the DMZ Group window, locate the group to be removed and click its corresponding Remove
option in the Configure field.
Step 2. In the Remove confirmation pop-up box, click OK to remove the group.
4.3.2 Service
In this section, network services are defined and new network services can be added. There are three sub menus under
Service which are: Pre-defined, Custom, and Group. The Administrator can simply follow the instructions below to
define the protocols and port numbers for network communication applications. Users then can connect to servers and
other computers through these available network services.
What is Service?
TCP and UDP protocols support varieties of services, and each service consists of a TCP Port or UDP port number, such
as TELNET(23), SMTP(21), POP3(110),etc. The Content Security Gateway defines two services: pre-defined service
and custom service. The common-use services like TCP and UDP are defined in the pre-defined service and cannot be
modified or removed. In the custom menu, users can define other TCP port and UDP port numbers that are not in the
pre-defined menu according to their needs. When defining custom services, the client port ranges from 1024 to 65535
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