Cisco Systems 15310-CL, 15310-MA Disabling the Console Port on the ML-Series Card, Secure Login on the ML-Series Card, Secure Shell on the ML-Series Card

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Cisco ONS 15310-CL and Cisco ONS 15310-MA Ethernet Card Software Feature and Configuration Guide R8.5

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Chapter 15 Configuring Security for the ML-Series Card

Disabling the Console Port on the ML-Series Card

Disabling the Console Port on the ML-Series Card

There are several ways to access the Cisco IOS running on the ML-Series card, including a direct

connection to the console port, which is the RJ-11 serial port on the front of the card. Users can increase

security by disabling this direct connection, which is enabled by default. This prevents console port input

without preventing any console port output, such as Cisco IOS error messages.

You can disable console port access through CTC or TL1. To disable it with CTC, at the card-level view

of the ML-Series card, click under the IOS tab and uncheck the Enable Console Port Access box and

click Apply. The user must be logged in at the Superuser level to complete this task.

To disable it using TL1, refer to the Cisco ONS SONET TL1 Command Guide.

Secure Login on the ML-Series Card

The ML-Series card supports the Cisco IOS login enhancements integrated into Cisco IOS

Release 12.2(25)S and introduced in Cisco IOS Release 12.3(4)T. The enhancements allow users to

better secure the ML-Series card when creating a virtual connection, such as Telnet, Secure Shell, or

HTTP. The secure login feature records successful and failed login attempts for vty sessions (audit trail)

on the ML-Series card. These features are configured using the Cisco IOS command-line interface (CLI.)

For more information, including step-by-step configuration examples, refer to the Cisco IOS Release

12.2(25)S feature guide module Cisco IOS Login Enhancements at

http://www.cisco.com/en/US/products/sw/iosswrel/ps1838/products_feature_guides_list.html.

Secure Shell on the ML-Series Card

This section describes how to configure the SSH feature and contains this information:

• Understanding SSH, page 15-2

• Configuring SSH, page 15-3

• Displaying the SSH Configuration and Status, page 15-5

For other SSH configuration examples, see the “SSH Configuration Examples” section in the

“Configuring Secure Shell” chapter of the Cisco IOS Security Configuration Guide, Cisco IOS

Release 12.2, at this URL:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fsecur_c/fothersf.htm

Note For complete syntax and usage information for the commands used in this section, see the command

reference for Cisco IOS Release 12.2 at the URL:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/index.htm.

The ML-Series card supports SSH, both version 1 (SSHv1) and version 2 (SSHv 2). SSHv2 offers

security improvements over SSHv1 and is the default choice on the ML-Series card.