ECCouncil ICS-SCADA Exam With Confidence Using Practice Dumps

The IT Security Model commonly refers to the CIA Triad, which stands for Confidentiality, Integrity, and Availability.

An attack on "Availability" is aimed at disrupting the normal functioning and access to data or resources in a network. This type of attack can include actions such as DDoS (Distributed Denial of Service), where overwhelming traffic is sent to a system to make it unresponsive.

The main goal of attacks on availability is to prevent legitimate users from accessing systems or information, which can have significant implications for business operations and security.

References

Understanding the CIA Triad in Cybersecurity:

Denial of Service – What it is and how to prevent it:

IPsec offers two modes of operation: Transport mode and Tunnel mode.

Transport mode in IPsec provides security for the payload (the message part) of each packet along the communication path between two endpoints.

In this mode, the IP header of the original packet is not encrypted; it secures only the payload, not protecting the headers. This means while the data is protected, information about the sender and receiver as contained in the IP header is not obscured.

References

"Security Architecture for IP," RFC 4301.

IPsec documentation, Internet Engineering Task Force (IETF).

The maximum transmission unit (MTU) for Ethernet, which is the largest size of an Ethernet packet or frame that can be sent over the network, is typically 1500 bytes. This size does not include the Ethernet frame's preamble and start frame delimiter but does include all other headers and the payload. Ethernet's MTU of 1500 bytes is a standard for most Ethernet networks, especially those conforming to the IEEE 802.3 standard.References:

IEEE 802.3-2012, "Standard for Ethernet".