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9
Management Protocols
Configuration | System | Management Protocols | Telnet
This screen lets you configure and enable the VPN Concentrator's Telnet terminal emulation server, and
Telnet over SSL (Secure Sockets Layer protocol). When the server is enabled, you can use a Telnet client
to communicate with the VPN Concentrator. You can fully manage and administer the VPN Concentrator
using the Cisco Command Line Interface via Telnet.
Telnet server login usernames and passwords are the same as those enabled and configured on the
Administration | Access Rights | Administrators
Telnet/SSL uses a secure, encrypted connection. Although we are not aware of commercial Telnet/SSL
clients, there are some working shareware applications. For example, see ftp://ftp.gbnet.net/
pub/security/Crypto/SSLapps
application. (Please note that we mention this application for information only and that Cisco Systems
does not supply, support, or endorse it in any way.)
See the Configuration | System | Management Protocols | SSL screen to configure SSL parameters. See the
Administration | Certificate Management | Certificates
Figure 9-5: Configuration | System | Management Protocols | Telnet screen
Enable Telnet
Check the box to enable the Telnet server. The box is checked by default. Disabling the Telnet server
provides additional security, but doing so prevents using the Cisco Command Line Interface via Telnet.
Enable Telnet/SSL
Check the box to enable Telnet over SSL. The box is checked by default. Telnet/SSL uses Telnet over a
secure, encrypted connection.
Telnet Port
Enter the port number that the Telnet server uses. The default is 23 , which is the well-known port
number. Changing the port number provides additional security.
9-6
screens.
for ssltel02.zip , an "SSL Telnet for Windows" shareware
screen to manage the SSL digital certificate.
VPN 3000 Concentrator Series User Guide
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