SECURITY OF INFORMATION AND IPSEC VPN.

• DOI: https://doi.org/10.22533/at.ed.9162429111

• Palavras-chave: ---

• Keywords: VPN; IPSec Protocol; Internet Security; Cryptography; Ubuntu; Operational System.

• Abstract: The objective of the chapter is: with the rapid evolution of technology, the Internet has become an indispensable tool of contemporary times, and is seen as a world ency-clopedia, source of information from various fields of knowledge. It is noteworthy that, as shown by studies, this network is not secure because the present protocols have vul-nerabilities to attacks (Denial of Service Attack, DNS poisoning, IP spoofing, etc.). For this security happens, network security protocols are used, such as SSL, SSH, TLS, and between these protocols is the IP Security (known as IPSec), which has stood out more and more for the safety of proof provided, so that will become the standard security protocol, a fact already proposed by US agencies. The main objective is the implementa-tion of IPSec using Ubuntu OS, since it is more flexible for the installation of free codes (as Openswan).