FUNDAMENTALS OF COMPUTER

COMPUTER THREATS SECURITY

WHAT IS A FIREWALL IN NETWORK SECURITY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which translation type of NAT performs NAT based on a combination of source and destination IP addresses and services?
A
Policy NAT
B
Static NAT
C
Dynamic NAT
D
Static PAT
Explanation: 

Detailed explanation-1: -Symmetric NAT The combination of one internal IP address plus a destination IP address and port is mapped to a single unique external source IP address and port; if the same internal host sends a packet even with the same source address and port but to a different destination, a different mapping is used.

Detailed explanation-2: -Static NAT is of the types of NAT that is used for One-to-One Translation of Ports or IP Addresses. In other words, for example in this NAT type, one Private IP Address is mapped to one Public IP Address.

Detailed explanation-3: -While static NAT is a constant mapping between inside local and global addresses, dynamic network address translation allows you to automatically map inside local and global addresses (which are usually public IP addresses).

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