Configuring Autosecure; Configuring Access Lists - Cisco CISCO851-K9 - 851 Integrated Services Router Configuration Manual

Configuring AutoSecure

For information about configuring AAA services and supported security protocols, see the following
sections of the
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Configuring AutoSecure
The AutoSecure feature disables common IP services that can be exploited for network attacks and
enables IP services and features that can aid in the defense of a network when under attack. These IP
services are all disabled and enabled simultaneously with a single command, greatly simplifying security
configuration on your router. For a complete description of the AutoSecure feature, see the
feature document.

Configuring Access Lists

Access lists (ACLs) permit or deny network traffic over an interface based on source IP address,
destination IP address, or protocol. Access lists are configured as standard or extended. A standard
access list either permits or denies passage of packets from a designated source. An extended access list
allows designation of both the destination and the source, and it allows designation of individual
protocols to be permitted or denied passage. An access list is a series of commands with a common tag
to bind them together. The tag is either a number or a name.
configure access lists.
Table 12-1 Access List Configuration Commands
ACL Type
Numbered
Standard
Extended
Named
Standard
Extended
Cisco 850 Series and Cisco 870 Series Access Routers Software Configuration Guide
12-2
Cisco IOS Security Configuration
Configuring Authentication
Configuring Authorization
Configuring Accounting
Configuring RADIUS
Configuring TACACS+
Configuring Kerberos
Guide:
Configuration Commands
access-list {1-99}{permit | deny} source-addr [source-mask]
access-list {100-199}{permit | deny} protocol source-addr
[source-mask] destination-addr [destination-mask]
ip access-list standard name followed by deny {source |
source-wildcard | any}
ip access-list extended name followed by {permit | deny} protocol
{source-addr[source-mask] | any}{destination-addr
[destination-mask] | any}
Chapter 12 Configuring Security Features
Table 12-1 lists the commands used to
AutoSecure
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