A. ip route 184.108.40.206 255.255.255.224 220.127.116.11
B. ip route 0.0.0.0 0.0.0.0 18.104.22.168
C. ip route 22.214.171.124 255.255.255.224 126.96.36.199 254
D. ip route 0.0.0.0 0.0.0.0 188.8.131.52
Correct Answer: C
3 ccna.1.2 Basic Content 145In order to build a VPN, one device per site is required to have the appropriate hardware and/or software that can support the selected set of VPN security standards and protocols. The equipment required is specified below.Router: In addition to forwarding packets, the router should support VPN functionality. The router should have a dedicated expansion card to help the router implement faster encryption.Adaptive Security Appliance (ASA): Cisco's leading security appliance that can be configured for a wide range of security features, including VPN.VPN client: In accessing VPN, the PC may need to perform VPN functions, while the laptop may rely on software to perform these functions, which is called a VPN client. Finally, comparing VPNs with other WAN technologies reveals several advantages. For example, a company has 1,000 small retail endpoints. Then the company can use leased lines to create private WANs, or Frame Relay, Ethernet WANs, Multiprotocol Label Switching (MPLS), and so on. However, each branch can be connected to the Internet and can use VPN technology, thus saving the cost of other WAN options. Here are a few benefits. Overhead: InternetVPN is more economical than other private WAN options. Security:InternetVPN solutions can achieve the same level of security as a private WAN connection. Scalability: Internet VPN solutions can scale with a reasonable overhead. to the point that every contact point can communicate over anyInternet connection to most business locations, and Internet access also contains multiple additional options. The following is an introduction to SSLVPN.7.2.2 IPsec VPNsIPsec is an architecture or framework for IP network security services. Its name is not an acronym, but rather an abbreviation for the title of the RFC document that defines the protocol (RFC 4301, Security Architecture for the InternetProtocol), commonly referred to as IP security or IPseco.IPsec defines how two devices are connected to the Internet, which can be achieved through the main goals of the LAN listed at the beginning of this chapter: confidentiality, authentication, data integrity, and anti-retransmission. However, similar to the TCP/IP protocol architecture that defines a number of protocols, some of which can be traded off against each other when used, Ipsec also allows different protocol options to be used for each VPN feature.A distinct advantage of Ipsec is that, as an architecture, it can be supplemented and improved as security protocols evolve.This chapter will not cover every aspect of every part of IPsec, but will give a comprehensive concept based on the functionality of IPsec. The section explains how the two ends of IPsec add data and encrypted data to the IPsecVPN header.
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