CCNA study notes on Security Device Manager (SDM)

Cisco Certified Network Associate (CCNA)

Security Device Manager (SDM)

1. The following are the important characteristics of SDM (Security Device Manager):

2. The Internet architecture provides an unregulated network path to attack innocent hosts. Denial-of-service (DoS) attacks exploit this to target mission-critical services. DoS attacks, are explicit attempts to block legitimate users system access by reducing system availability. Any physical or host-based intrusions are generally addressed through hardened security policies and authentication mechanisms. Although software patching defends against some attacks, it fails to safeguard against DoS flooding attacks, which exploit the unregulated forwarding of Internet packets.

3. An intrusion prevention system is a computer security device that monitors network and/or system activities for malicious or unwanted behavior and can react, in real-time, to block or prevent those activities.

Intrusion Detection Systems (IDS) detect unauthorized access attempts. There are basically two main types of IDS being used today: Network based (a packet monitor), and Host based (looking for instance at system logs for evidence of malicious or suspicious application activity in real time).

Both IPS and IDS are closely related, and IPS is considered as an extension of IDS.

Previous  Up  Next  

CertExams Blog!  Certexams.com Facebook Page Certexams.com Twitter Page Certexams on YouTube


Disclaimer: CertExams.com is neither associated nor affiliated with Cisco® Systems, Inc. or any other company. CCNA, CCNP are trademarks of Cisco® Systems and duly acknowledged. The cheatsheets and practice tests material is a copyright of CertExams.com and the same is not approved or endorsed by respective certifying bodies.