Using Clavister OneConnect Classic SSL VPN client towards the OneConnect server

Last modified on 29 Jun, 2021. Revision 25
With the introduction of the OneConnect specific server in 13.00.09 there could be a bit of a confusion on which version that can be used towards what
Up to date for
cOS Core 13.00.09
Supported since
cOS Core 13.00.09
Status OK
Musab Osman & Peter Nilsson

Question: Can I use the Clavister OneConnect Classic SSL VPN Client for Windows when connecting to the OneConnect VPN Server in NetWall?


Short answer, no. Some more details:

  • If version 3 and up of the Clavister OneConnect client is used, you can only connect to the new OneConnect server that was introduced in version 13.00.09 and up of cOS Core. The reason for this is because the version 3 client uses a new protocol (OpenConnect).
    • Note: Even though OneConnect uses the OpenConnect protocol it will be customized with new functions/features causing it to deviate from the standard protocol in the future. This is only related to the Clavisters own OneConnect VPN client, customers using a third party OpenConnect client will still continue to work.
  • If version 2 and older of the Clavister OneConnect Classic client (also known as SSL VPN client depending on version) it can only connect to the old SSL VPN specific server in cOS Core (which also works for older versions of cOS Core than 13.00.09).

The OneConnect server also supports the use of third party clients that have support for the OpenConnect protocol.

Note: Not all clients have been tested so there is no guarantee that all OpenConnect supported VPN clients on the market are compatible.

Related articles

Brian Smart Search (Beta)
15 Jan, 2024 dictionary troubleshoot core stream incontrol incenter oneconnect cloudservice
Configure Clavister OneConnect using deep links
13 Jun, 2022 oneconnect macos ios windows android
Configure Clavister OneConnect for macOS, iOS and iPadOS towards NetWall
28 Apr, 2023 openconnect oneconnect macos ios iphone
Configuring public certificates in NetWall firewalls
18 Mar, 2024 core certificate oneconnect ipsec vpn
Configure the Android OpenConnect client towards Clavister NetWall
23 Aug, 2022 sslvpn openconnect oneconnect android core
Configure Clavister OneConnect for Windows towards Clavister NetWall
29 Oct, 2021 sslvpn openconnect oneconnect windows
Lets Encrypt - error 9814 - chain had an expired certs
13 Oct, 2021 oneconnect macos openconnect ios
Certificate update in InControl global domain on certificate that is used on firewall(s)
18 Mar, 2024 core incontrol certificate oneconnect ipsec vpn
Configure Linux OpenConnect towards Clavister NetWall
5 Mar, 2021 sslvpn openconnect oneconnect linux core
Configuring SSL-VPN / OneConnect server on secondary Firewall IP address
8 Apr, 2021 core sslvpn oneconnect interfaces arp
OneConnect VPN certificate not trusted
18 Mar, 2024 onetouch sslvpn oneconnect troubleshoot certificate
Install OneConnect without Microsoft store
25 Feb, 2022 oneconnect windows howto
Howto - Userbased rules
27 Feb, 2024 oneconnect userbased core
Changing the certificate used by the OneConnect client/server
28 Nov, 2022 core configuration oneconnect
Clavister OneConnect server using cOS Core as CA Server
11 May, 2023 oneconnect certificate howto
Configure the OpenConnect-GUI client towards Clavister NetWall
23 Aug, 2022 sslvpn openconnect oneconnect macos windows linux core