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cisco ccna for free.The EasyVPN server centrally configures Easy VPN remote end policies and gives them access to company resources. Configure all IPSec remote access policies on the server and push them out to the remote ends for them to implement. This makes it easy to modify the policies because they only need to be modified on a limited number of servers and not on any of the remote ends. Cisco's supported EasyVPN server products include ASA Security Appliances and Cisco IOS Routers, but it is recommended that ASA Security Appliances be used as EasyVPN servers.The EasyVPN remote side allows users to securely access company resources through the Easy VPN server. On the remote side, very little configuration is required to establish a tunnel, another reason why this solution is named EasyVPN. Cisco products available as EasyVPN remotes include: Cisco VPN Client (CVC) for Windows, Mac OS X, Solaris and Linux (now discontinued); AnyConnect Secure Mobility Client; Certicom and Movian clients (for mobile devices); and Hardware Client. EasyVPN lets users use the application as if there were no VPN; the downside is that they must be connected to a network.as if there were no VPN; the disadvantage is that special software must be installed on the user's desktop, laptop, or mobile device, or a hardware client must be deployed.Cisco's primary remote access VPN solutions are EasyVPN, which uses IPSec, and WebVPN, which uses SSL. oEasy VPN has two components: a server and a remote end.WebVPN IPSec is an open standard, while SSLVPN, while using SSL as a protection protocol, is implemented differently by each vendor and is therefore proprietary. SSLVPN is one of the newest VPNs on the market. Cisco's SSLVPN is called WebVPN, and it offers three modes of secure connectivity: clientless, thin client, and web client. The main advantage of clientless and thin client implementations, which use a regular Web browser with JavaScript installed to provide a VPN solution, is that no special software needs to be installed on the user's desktop - they use an off-the-shelf Web browser! The disadvantage is that the application is required to be Web-based (only a few non-Web-based applications are supported, such as Telnet). o The AnyConnect Mobility client provides network layer protection, allowing users to use the applications they normally use directly. In addition, it is easy to configure the VPN gateway and to modify policies and add users within it. However, SSLVPN is not as scalable and secure as IPSec VPNOMany companies use both EasyVPN and WebVPN oEasyVPN is used in situations where a hardware client can be deployed (e.g., SOHO), or where the user is using a company computer (e.g., a laptop) with a CiscoVPNClient0WebVPN is often used in situations where Easy VPN client software cannot be installed, such as when a business partner When accessing your network, or when employees access the corporate network at airport kiosks while traveling.24.4.3 IPSecIPSec stands for IP Security, which is an open standard defined by numerous RFCs. IPSec runs at the network layer and protects IP packets. IPSec can be used for L2L VPNs, as well as for remote access VPNs. VPN solutions using IPSec are more secure than any other VPN solution and are currently widely used, but they are also the most difficult to configure and troubleshoot. The next two subsections briefly describe the services that IPSec provides and the protocols it uses to provide protection.IPSec Services IPSec provides four main services. . Authentication: authenticating remote peers; using pre-shared keys and digital signatures generated by digital certificates for authentication.. Confidentiality: ensures that no intermediate device can decipher the contents of the payload in a packet; uses encryption to "hide" the real data.