cisco online training and certification

cisco online training and certification.SSL VPN tunneling client (AnyConnect Secure Mobile Client).o Integratedterminal service.HTTPS provides secure Web communications between browsers and Web servers that support the HTTPS protocol. SSL VPNs extend this model to allow VPN users to access Web applications within a unit's internal network, as well as other application servers that may or may not support HTTPS, or even HTTP. SSL VPNs implement these requirements through a variety of technologies, collectively known as reverse proxy technologies.A reverse proxy is a proxy server that is deployed in front of an application server (typically a Web server) asinbound device for Internet users to access Web application resources on the unit's intranet. To external clients, there is no difference between a reverse proxy server and a pure Web server. Upon receiving a request from a user to access a Web server, the reverse proxy server forwards the user's request to a Web server on the intranet, obtains the content on behalf of the user, and forwards the content to the user (the reverse proxy server may modify the content before forwarding it to the user).Many web server implementations support reverse proxy functionality, for example, Apache's mod_proxy module. With so many implementations already in place, the reader may ask why it is necessary for an SSLVPN solution to support reverse proxy functionality. The answer is that SSL VPNs offer more powerful features than traditional reverse proxy technologies, as shown below.SSL VPNs convert complex Web applications and certain simple non-Web application traffic that reverse proxy servers cannot handle. The process of content conversion is sometimes referred to as webification (webification). o Let's say an SSL VPN solution allows users to access Windows or UNIX file systems. Not only does the SSL VPN gateway need to "interoperate" with the Windows or UNIX server on the organization's intranet, but it also needs to provide VPN users with "webified" file access in a way that can be rendered by a Web browser.SSLVPN supports a large number of business applications. For applications that do not support Web-enabled access, SSLVPN can support access to them using alternative resource access methods. SSL VPNs can also provide direct network layer access to remote devices (to the unit's internal network), as IPSec VPNs do, to meet the needs of users reaching at the network layer.SSLVPN has all the features of a pure remote access VPN, including user authentication, resource access, rights management, logging and accounting, and endpoint security, plus a great user experience.SSLVPN's reverse proxy mode is also known as clientless web access, or simply clientless access, because it does not require any client software to be installed on the user's computer. Client-based SSLVPN provides a solution to connect to a unit's internal network by simply pointing a Web browser to the Cisco ASA, without installing additional software on the computer.