Openconnect Ssl Vpn

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Support for Juniper's Network Connect protocol was added toOpenConnect in early 2015, for the 7.05 release. It is stillexperimental, and is quite likely to be deprecated in favour of the newerJunosPulse protocol.

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OpenConnect is a command-line client for Cisco’s AnyConnect SSL VPN, that can be used as an alternative to Cisco AnyConnect client. The following guide to install and setup OpenConnect in Mac is. Sep 30, 2020 OpenConnect is an SSL VPN client initially created to support Cisco’s AnyConnect SSL VPN. It has since been ported to support the Juniper SSL VPN which is now known as Pulse Connect Secure. OpenConnect is an SSL VPN client for Cisco AnyConnect and ocserv gateways. FEATURES - App Filtering for Android 5+ - One-click connection (batch mode) - Supports RSA SecurID and TOTP software tokens - Keepalive feature to prevent unnecessary disconnections - Compatible with ARM, x86, x64, ARM64 - No root required - Based on the popular OpenConnect Linux package REQUIREMENTS - An account on a. Jul 06, 2018 OpenConnect is an SSL VPN client initially created to support Cisco’s AnyConnect SSL VPN. It has since been ported to support the Juniper SSL VPN which is now known as Pulse Connect Secure.

Juniper mode is requested by adding --protocol=ncto the command line:

Network Connect works very similarly toAnyConnect — initial authentication is madeover HTTP, resulting in an HTTP cookie which is used to make the actualVPN connection. That connection is also made over HTTP, and the IP addressand routing information are provided by the VPN server. The client thenattempts to bring up a UDP transport, which in the case of Juniper isESP.

Authentication

The authentication stage with Juniper is what is expected to causemost problems. Unlike AnyConnect which has a relatively simple XMLschema for interacting with the user, the Juniper VPN expects a fullweb browser environment and uses HTML forms with JavaScript and evenfull-blown Java support.

The common case is relatively simple, and OpenConnect supports thecommon forms defined by the Juniper-provided templates. However,administrators have the facility to put arbitrary HTML pages into thelogin sequence and full compatibility may require actuallyusing a web browser to log in — ironically, since much of the reasonusers have been asking for OpenConnect to support Juniper is becausethey didn't want to have to use a web browser.

For NetworkManager we may end up putting a full HTML renderer intothe GUI authentication dialog, while the command line client continuesto parse the common login forms and make a best attempt at handlinganything non-standard.

External authentication

There are a number of perl and python scripts which handle authenticationto Juniper servers to bypass the web browser. One such script has beenported to invoke OpenConnect instead of Juniper's own ncsvcclient and can be foundhere.

Any of these scripts which authenticate and obtain a DSIDcookie representing a VPN session can be used with OpenConnect. Justpass the cookie to OpenConnect with its -C option, for example:

Host Checker (tncc.jar)

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Many sites require a Java applet to run certain tests as a preconditionof authentication (similar to CSDfor AnyConnect VPNs and HIP for GlobalProtect VPNs).See the Host Checker / TNCC page for how to configure OpenConnectto wrap and run this applet.

Connectivity

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Once authentication is complete, the VPN connection can beestablished. At the time of writing much of the configuration for LegacyIP addressing and routes is understood and implemented. IPv6 is notyet implemented, and test reports from someone with an IPv6-capable serverwould be greatly appreciated.

The data transport is functional both over the HTTPS session and alsoover ESP. Servers with compression enabled should also be supported, asLZO decompression is working and although we lack compressionsupport it appears acceptable to simply send packets uncompressed.

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At the time of writing, keepalive for the ESP connection has beenimplemented and extremely lightly tested, while it isn't yet known ifthe VPN supports keepalive on the HTTPS connection. Reconnection of boththe HTTPS and ESP links is implemented. The current implementation isbasically usable and is definitely ready for some more widespread testing.