Glossary
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Cisco Router and Security Device Manager Version 2.2 User’s Guide
OL-4015-08
VPN mirror policy A VPN policy on a remote system that contains values that are compatible with
a local policy and that enable the remote system to establish a VPN connection
to the local system. Some values in a mirror policy must match values in a local
policy, and some values, such as the IP address of the peer, must be the reverse
of the corresponding values in the local policy.
You can create mirror policies for remote administrators to use when you
configure site-to-site VPN connections. For information on generating a mir ror
policy, refer to Generate Mirror....
vty virtual type terminal. Commonly used as virtual terminal lines.
W
WAN Wide Area Network. A network that serves users across a broad geographical
area, and often uses transmission devices provided by common carriers. See also
LAN.
wildcard mask A bit mask used in access rules, IPSec rules, and NAT rules to specify which
portions of the packet’s IP address must match the IP address in the rule. A
wildcard mask contains 32 bits, the same number of bits in an IP address. A
wildcard bit value of 0 specifies that the bit in that same position of the packet’s
IP address must match the bit in the IP address in the rule. A value of 1 specifies
that the corresponding bit in the packet’s IP address can be either 1 or 0, that is,
that the rule “doesn’t care” what the value of the bit is. A wildcard mask of
0.0.0.0 specifies that all 32 bits in the packet’s IP address must match the IP
address in the rule. A wildcard mask of 0.0.255.0 specifies that the first 16 bits,
and the last 8 bits must match, but that the third octet can be any value. If the IP
address in a rule is 10.28.15.0, and the mask is 0.0.255.0, t he IP address
10.28.88.0 would match the IP address in the rule, and the IP address
10.28.15.55 would not match.
WINS Windows Internet Naming Service. A Windows system that determines the IP
address associated with a particular network computer.