C-1
Cisco Security Appliance Command Line Configuration Guide
OL-10088-01
APPENDIX
C
Using the Command-Line Interface
This appendix describes how to use the CLI on the security appliance, and includes the following
sections:
• Firewall Mode and Security Context Mode, page C-1
• Command Modes and Prompts, page C-2
• Syntax Formatting, page C-3
• Abbreviating Commands, page C-3
• Command-Line Editing, page C-3
• Command Completion, page C-4
• Command Help, page C-4
• Filtering show Command Output, page C-4
• Command Output Paging, page C-5
• Adding Comments, page C-6
• Text Configuration Files, page C-6
Note The CLI uses similar syntax and other conventions to the Cisco IOS CLI, but the security appliance
operating system is not a version of Cisco IOS software. Do not assume that a Cisco IOS CLI command
works with or has the same function on the security appliance.
Firewall Mode and Security Context Mode
The security appliance runs in a combination of the following modes:
• Transparent firewall or routed firewall mode
The firewall mode determines if the security appliance runs as a Layer 2 or Layer 3 firewall.
• Multiple context or single context mode
The security context mode determines if the security appliance runs as a single device or as multiple
security contexts, which act like virtual devices.
Some commands are only available in certain modes.
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