Cisco PIX 525 Spezifikationen PDF herunterladen (Seite 55)

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Cisco PIX Firewall and VPN Configuration Guide

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Chapter 1 Getting Started

Using the Command-Line Interface

Command Output Paging

On commands such as help or?, show, show xlate, or other commands that provide long listings, you

can determine if the information displays a screenful and pauses, or lets the command run to completion.

The pager command lets you choose the number of lines to display before the More prompt appears.

When paging is enabled, the following prompt appears:

<--- More --->

The More prompt uses syntax similar to the UNIX more command:

• To view another screenful, press the Space bar.

• To view the next line, press the Enter key.

• To return to the command line, press the q key.

Comments

You can precede a line with a colon ( : ) to create a comment. However, the comment only appears in the

command history buffer and not in the configuration. Therefore, you can view the comment with the

show history command or by pressing an arrow key to retrieve a previous command, but because the

comment is not in the configuration, the write terminal command does not display it.

You can also store configurations with comments preceded by a colon or exclamation mark on a server

and then use the configure net [[location]:[filename]] command to load the configuration from a TFTP

server to the PIX

Firewall. Replace location with the TFTP server name and filename with the

configuration file name. The PIX Firewall will prune the comments and they will not be visible in the

PIX

Firewall configuration listing.

To add comments to access lists use the access-list id [line line-num] remark text command. Replace

id with the identifier for the access list, replace text with up to 100 characters, and replace line-num

with the line number where you want to insert the text. The remark can be placed before or after an

access-list command statement, but place it in a consistent position so it is clear which access list the

remark describes. You can also add comments to object groups using the description text parameter

after the object-group command. For more information about access lists and object groups, refer to

Chapter 2, “Controlling Network Access and Use.

underscore _ Matches a comma (,), left brace ({), right brace (}), left parenthesis,

right parenthesis, the beginning of the input string, the end of the

input string, or a space.

brackets [] Designates a range of single-character patterns.

hyphen - Separates the end points of a range.

parentheses () (Border Gateway Protocol (BGP) specific) Designates a group of

characters as the name of a confederation.

Table 1-2 Using Special Characters in Regular Expressions

Character Type Character Special Meaning

1 2 ... 50 51 52 53 54 55 56 57 58 59 60 ... 465 466

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