7: Services
EMG™ Edge Management Gateway User Guide
117
Telnet
Web SSH/Web Telnet Settings
3. To save, click the
Apply
button.
Timeout Data
Direction
If idle connection timeouts are enabled, this setting indicates the direction of data used
to determine if the connection has timed out. Select the type of data direction:
Both Directions
Incoming Network
Outgoing Network
SSH Port
Allows you to change the SSH login port to a different value in the range of 1 - 65535.
The default is 22. Use of ports other than 22 that are less than 1025 is not
recommended.
DSA Keys
Enables or disables support for DSA keys for incoming and outgoing connections for
the EMG unit. Any imported or exported DSA keys will be retained but will not be visible
on the web or the CLI. Enabled by default.
Use only SHA2
and Higher
Enables or disables support for only Secure Hash Algorithm (SHA2) and higher ciphers
for incoming connections for the EMG unit. Disabled by default. Enabling this option will
also disable MACs with tag sizes lower than 128 bits (e.g. umac-64-
[email protected] and [email protected]).
Enable Logins
Enables or disables Telnet logins to the EMG unit to allow users to access the CLI
using Telnet. Disabled by default.
This setting does not control Telnet access to individual device ports. (See
Ports > Settings (1 of 2) (on page 154)
for information on enabling Telnet access to
individual ports.) You may want to keep this option disabled for security reasons.
Web Telnet
Enables or disables the ability to access the EMG command Iine interface or device
ports (connect direct) through the Web Telnet window. Disabled by default.
Timeout
If you enable Telnet logins, you can cause an idle connection to disconnect after a
specified number of minutes. Select
Yes
and enter a value of from 1 to 30 minutes.
Timeout Data
Direction
If idle connection timeouts are enabled, this setting indicates the direction of data used
to determine if the connection has timed out. Select the type of data direction:
Both Directions
Incoming Network
Outgoing Network
Escape Sequence
A single character or a two-character sequence that causes the EMG unit to terminate
a Telnet client. Currently the Escape Sequence is only used for Web Telnet sessions.
The default value is
Esc+T
(escape key, then uppercase "T" performed quickly but not
simultaneously). You would specify this value as
\x1bT
, which is hexadecimal
(\x)
character 27
(1B)
followed by a
T
. A control character can be specified with the
hexadecimal number for the control character; for example,
Control-E
can be
specified as \x05. Note that some browsers do not report key press events if Control is
pressed for non-alphanumeric keys, so it is recommended to only use letters with
Control character sequences.
Outgoing Telnet
Enables or disables the ability to create Telnet out connections.
Terminal Buffer
Size
Number of lines in the Web SSH or Web Telnet terminal window that are available for
scrolling back through output.
Note:
For tips on browser issues with Web SSH or Web Telnet, see