Which of the following is designed to detect unwanted attempts at accessing, manipulating, and
disabling of computer systems through the Internet?
A.
DAS
B.
IPsec
C.
IDS
D.
ACL
Explanation:
An Intrusion detection system (IDS) is software and/or hardware designed to detect
unwanted attempts at accessing, manipulating, and/or disabling of computer systems, mainly
through a network, such as the Internet. These attempts may take the form of attacks, as
examples, by crackers, malware and/or disgruntled employees. An IDS cannot directly detect
attacks within properly encrypted traffic. An intrusion detection system is used to detect several
types of malicious behaviors that can compromise the security and trust of a computer system.
This includes network attacks against vulnerable services, data driven attacks on applications,
host based attacks such as privilege escalation, unauthorized logins and access to sensitive files,(ACL) is the most commonly used object in Cisco IOS. It filters packets or network traffic by
controlling whether routed packets are forwarded or blocked at the router’s interfaces. According
to the criteria specified within the access lists, router determines whether the packets to be
forwarded or dropped. Access control list criteria could be the source or destination address of the
traffic or other information. The types of Cisco ACLs are Standard IP, Extended IP, IPX, Appletalk,
secures traffic by using encryption and digital signing. It enhances the security of data as if an
IPSec packet is captured, its contents cannot be read. IPSec also provides sender verification that
workstation, without using a storage network.