Visara CCA-3074 Installation - Manual (Page 59)

CCA-3074 Installation and Configuration
707161-003 6-3
Configuring Listen Ports
The CCA-3074 will listen for TN3270 clients only on the TCP ports that have been
configured for listening. Clients attempting to connect to a TCP port that has not been
configured will be turned away by the CCA-3074. Configured ports will be listened to on
every configured Ethernet interface.
To configure the TCP ports that will be listened to, select the [Ports] button on the
TN3270 Configuration Panel. The resulting panel will appear.
This panel allows you to define which TCP ports the CCA-3074 is to listen on and
whether traffic through the port is to use SSL encryption. After the initial port entry, ports
can be added to the list by pressing the [New] button. Ports can be deleted from the list
by selecting the port that you wish to eliminate and pressing the [Delete] button. Before
leaving the panel you will need to press the [Update] button to save any changes that you
have made.
The Ports dropdown box contains a list of all of the ports that have been configured for
listening. A port only needs to be added one time. Any number of users may connect
through the same port. Port 23 is the default port for Telnet, which TN3270 is part of.
Most TN3270 clients will also default to use Port 23. For security purposes, the CCA-
3074 limits the ports that can be configured as listening ports are in the range of 1026-
49151. Note that there may be other ports within that range such as 8005 and 8009 that
are disallowed because of conflicts with other processes running on the CCA-3074.