Implementing Cisco IOS Network Security

Cisco CCNA Security IINS Syllabus

Describe the security threats facing modern network infrastructures

* Describe and list mitigation methods for common network attacks
* Describe and list mitigation methods for Worm, Virus, and Trojan Horse attacks
* Describe the Cisco Self Defending Network architecture


Secure Cisco routers

* Secure Cisco routers using the SDM Security Audit feature
* Use the One-Step Lockdown feature in SDM to secure a Cisco router
* Secure administrative access to Cisco routers by setting strong encrypted passwords, exec timeout, login failure rate and using IOS login enhancements
* Secure administrative access to Cisco routers by configuring multiple privilege levels
* Secure administrative access to Cisco routers by configuring role based CLI
* Secure the Cisco IOS image and configuration file


Implement AAA on Cisco routers using local router database and external ACS

* Explain the functions and importance of AAA
* Describe the features of TACACS+ and RADIUS AAA protocols
* Configure AAA authentication
* Configure AAA authorization
* Configure AAA accounting


Mitigate threats to Cisco routers and networks using ACLs

* Explain the functionality of standard, extended, and named IP ACLs used by routers to filter packets
* Configure and verify IP ACLs to mitigate given threats (filter IP traffic destined for Telnet, SNMP, and DDoS attacks) in a network using CLI
* Configure IP ACLs to prevent IP address spoofing using CLI
* Discuss the caveats to be considered when building ACLs


Implement secure network management and reporting

* Use CLI and SDM to configure SSH on Cisco routers to enable secured management access
* Use CLI and SDM to configure Cisco routers to send Syslog messages to a Syslog server


Mitigate common Layer 2 attacks

* Describe how to prevent layer 2 attacks by configuring basic Catalyst switch security features


Implement the Cisco IOS firewall feature set using SDM

* Describe the operational strengths and weaknesses of the different firewall technologies
* Explain stateful firewall operations and the function of the state table
* Implement Zone Based Firewall using SDM


Implement the Cisco IOS IPS feature set using SDM

* Define network based vs. host based intrusion detection and prevention
* Explain IPS technologies, attack responses, and monitoring options
* Enable and verify Cisco IOS IPS operations using SDM


Implement site-to-site VPNs on Cisco Routers using SDM

* Explain the different methods used in cryptography
* Explain IKE protocol functionality and phases
* Describe the building blocks of IPSec and the security functions it provides
* Configure and verify an IPSec site-to-site VPN with pre-shared key authentication using SDM

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