User Manual

Ports Virtual Ports
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8.13 Virtual Ports
Incoming SSH, Telnet, and Rlogin connections are not associated with a physical port. Instead, they are
associated with a virtual port which serves for the duration of the connection. Virtual port connections can
be made only if incoming connections are enabled on the SCS.
Figure 8-52: Enabling Incoming Connections
Note: An incoming login password can be configured with the Set/Define Server
Incoming command, which is discussed on page 12-121.
Each virtual port is created with a default set of characteristics. The default settings for port 0 connections
are remote processing of the break key, local switch set to ASCII 12 (Ctrl-L), forward switch set to ASCII
6 (Ctrl-F), and backward switch set to ASCII 2 (Ctrl-B). The Set Port commands can be used to customize
a virtual port during the session, but these customizations cannot be saved.
To make configurations that apply to all virtual ports (all future SSH/Telnet/Rlogin connections), use
Define Port commands, specifying port 0 as the port number. When the command in Figure 8-53 is used,
all future network logins will be required to enter a username and password.
Figure 8-53: Configuring Virtual Ports
Note: Port 0 can only be configured using Define, not Set, commands.
To display the characteristics used for virtual ports, enter the following command:
Figure 8-54: Displaying Virtual Port Characteristics
Local>> DEFINE SERVER INCOMING TELNET
Local>> DEFINE PORT 0 AUTHENTICATION ENABLED
Local>> LIST PORT 0