30
C
HAPTER
1: U
SING
THE
C
OMMAND
-L
INE
I
NTERFACE
Wildcard Masks
Security access control lists (ACLs) use source and
destination IP addresses and wildcard masks to determine whether the
WX filters or forwards IP packets. Matching packets are either permitted
or denied network access. The ACL checks the bits in IP addresses that
correspond to any
0
s (zeros) in the mask, but does not check the bits that
correspond to
1
s (ones) in the mask. You specify the wildcard mask in
dotted decimal notation.
For example, the address 10.0.0.0 and mask 0.255.255.255 match all IP
addresses that begin with 10 in the first octet.
The ACL mask must be a contiguous set of zeroes starting from the first
bit. For
example, 0.255.255.255, 0.0.255.255, and 0.0.0.255 are valid
ACL masks.
However, 0.255.0.255 is not a valid ACL mask.
User Globs, MAC
Address Globs, and
VLAN Globs
Name “globbing” is a way of using a wildcard pattern to expand a single
element into a list of elements that match the pattern. MSS accepts user
globs, MAC address globs, and VLAN globs. The order in which globs
appear in the configuration is important, because once a glob is matched,
processing stops on the list of globs
User Globs
A user glob is shorthand method for matching an authentication,
authorization, and accounting (AAA) command to either a single user or
a set of users.
A user glob can be up to 80 characters long and cannot contain spaces or
tabs. The double-asterisk (**) wildcard characters with no delimiter
characters match
all
usernames. The single-asterisk (*) wildcard character
matches any number of characters up to, but not including, a delimiter
character in the glob. Valid user glob delimiter characters are the
at
(@)
sign and the period (.).
For example, in Table 3, the following globs identify the following users:
Table 3
User Globs
User Glob
User(s) Designated
User
jose
at example.com
Summary of Contents for 3CRWX120695A
Page 138: ...138 CHAPTER 6 CONFIGURING AND MANAGING IP INTERFACES AND SERVICES ...
Page 272: ...272 CHAPTER 11 CONFIGURING RF LOAD BALANCING FOR MAPS ...
Page 310: ...310 CHAPTER 13 CONFIGURING USER ENCRYPTION ...
Page 322: ...322 CHAPTER 14 CONFIGURING RF AUTO TUNING ...
Page 350: ...350 CHAPTER 16 CONFIGURING QUALITY OF SERVICE ...
Page 368: ...368 CHAPTER 17 CONFIGURING AND MANAGING SPANNING TREE PROTOCOL ...
Page 412: ...412 CHAPTER 19 CONFIGURING AND MANAGING SECURITY ACLS ...
Page 518: ...518 CHAPTER 21 CONFIGURING AAA FOR NETWORK USERS ...
Page 530: ...530 CHAPTER 22 CONFIGURING COMMUNICATION WITH RADIUS ...
Page 542: ...542 CHAPTER 23 MANAGING 802 1X ON THE WX SWITCH ...
Page 598: ...598 CHAPTER 26 ROGUE DETECTION AND COUNTERMEASURES ...
Page 706: ...706 GLOSSARY ...