Anthony Sequeira's CCNA Security 640-554 Quick Reference PDF
By Anthony Sequeira
With this record as your advisor, you are going to assessment subject matters on imposing Cisco IOS community safeguard. This fact-filled fast Reference permits you to get all-important info at a look, aiding you to concentration your research on parts of weak point and to augment reminiscence retention of crucial examination innovations.
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This section details this new technology. 4(6)T introduced a new configuration model for the Cisco IOS Firewall feature set. This new model presented the Cisco IOS zone-based policy, which provides the following: ■ Intuitive policies for multiple interface routers ■ A greater level of granularity for firewall policy application ■ The ability to prohibit traffic between firewall zones until an explicit policy is applied to allow desirable traffic via a default deny-all policy The new zone-based policy inspection interface supports almost all the firewall features implemented in earlier releases and much more, including the following: ■ Stateful packet inspection.
The state table is part of the internal structure of the firewall. It tracks all sessions and inspects all packets passing through the firewall. Although this is the primary Cisco Firewall technology, it has some limitations: ■ Cannot prevent application layer attacks. ■ Not all protocols are stateful. ■ Some applications open multiple connections. ■ Does not support user authentication. © 2012 Pearson Education, Inc. All rights reserved. This publication is protected by copyright. Please see page 89 for more details.
To use the CCP to configure SNMP, choose Configure > Router > SNMP > Edit. © 2012 Pearson Education, Inc. All rights reserved. This publication is protected by copyright. Please see page 89 for more details. [ 36 ] Chapter 2: Perimeter Security SSH The SSH daemon is a feature that enables an SSH client to make a secure, encrypted connection to a Cisco router. Use SSH rather than Telnet to manage Cisco devices. 3(4)T and later support both SSHv1 and SSH Version 2 (SSHv2). The Cisco router acts as the SSH server, and the client must be acquired to connect to the server.
CCNA Security 640-554 Quick Reference by Anthony Sequeira