I am developing an application using the Microsoft .NET Compact Framework that runs on a Symbol PPT8800 industrial PDA.
I would like the application to be able to connect to an ASA5500 using the webvpn feature so that it can securely access a web service on an internal web server to transfer data. The benefit of using the WebVPN feature is it uses standard SSL and does not require a VPN to be initiated first.
Also Movian no longer sell their VPN software to end users for establishing an IPSEC VPN from a pocketpc to a cisco firewall.
Using the WebVPN using a browser such as Internet Explorer or Firefox is straight forward.
I am after the sequence of requests that my application would need to make to the ASA5500 to allow the application to authenticate and gain access to the webservice.
I understand the first request would be; for a firewall with ip address 10.20.0.254:
WebVPN uses Secure Sockets Layer Protocol and its successor, Transport Layer Security to provide a secure connection between remote users and specific, supported internal resources that you configure at a central site. The security appliance recognizes connections that need to be proxied, and the HTTP server interacts with the authentication subsystem to authenticate users.
Table of ContentsIntroductionVersion HistoryPossible Future
UpdatesDocuments PurposeNAT Operation in ASA 8.3+ SectionsRule Types
Network Object NATTwice NAT / Manual NATRule Types used per SectionNAT
Types used with Twice NAT / Manual NAT and Network Obje...
Table of Contents Introduction:This document describes details on how
NAT-T works. Background: ESP encrypts all critical information,
encapsulating the entire inner TCP/UDP datagram within an ESP header.
ESP is an IP protocol in the same sense that TCP an...