We did manage to get the built-in Mac OSX client to connect using Cisco IPSec, but we'd like to have the L2TP option working and available. We had similar problems trying to get the Windows 10 built-in VPN client using "L2TP/IPSec with pre-shared key." It won't work, either!
On the MAC built in VPN (L2TP) configuration in advanced options, you see a check box for "Send all traffic over VPN connection", but that option is not available in the MAC built in VPN (Cisco IPSec), would this check box be similar to the Cisco client, "allow local lan access", that particular feature allows for split tunneling in the Cisco This message continues to appear in the OpenSwan logs long after I have disconnected the Mac client. When I restart the ipsec service on the server, the log entry disappears and I can connect again. I have included dead peer detection in my OpenSwan config: dpddelay=30 dpdtimeout=120 dpdaction=clear vSRX,SRX Series. Understanding IPsec VPNs with NCP Exclusive Remote Access Client , Understanding SSL Remote Access VPNs with NCP Exclusive Remote Access Client, Example: Configuring the SRX Series Device for NCP Exclusive Remote Access Clients Apr 19, 2018 · Windows Server 2003 IPSec tunneling is not supported for client remote access VPN use because the Internet Engineering Task Force (IETF) IPSec Requests for Comments (RFCs) do not currently provide a remote access solution in the Internet Key Exchange (IKE) protocol for client-to-gateway connections.
Here we are dealing with the older IPSEC VPN method of remote VPNs, NOT AnyConnect. There is/was a VPN client for Mac OSX which you can still download. But modern versions of OSX have the Cisco IPSec VPN client built into them. I’m assuming you have already configured the firewall, if not see the article below; Cisco ASA5500 Client IPSEC VPN
The NCP Secure Entry macOS Client is a component of NCP's Next Generation Network Access Technology. The IPsec standard forms the basis of highly secure data connections to VPN gateways of all well-known providers. The connection is set up via any network (including iPhone tethering via USB or Bluetooth).
To use the native IPSec VPN client to make a connection to your Firebox, you must configure the VPN settings on your Firebox to match those on the iOS or macOS device. For IPSec VPN connections from a macOS device, you can also use the WatchGuard IPSec VPN Client for macOS. For more information, see Install the IPSec Mobile VPN Client Software.
3. Connecting to the IPsec VPN using the native Mac client: On the Mac, go to System Preferences > Network and click the Plus (+) button. Set Interface to VPN, set VPN Type to Cisco IPSec, and click Create. Set the Server Address to the FortiGate IP address, configure the network account details for the remote user, then click Authentication Test IPsec VPN Client Suite for Windows 10, 8, 7, Android, OS X, Windows Mobile, Mac 30-days free of charge. VPN Client, personal firewall, Internet connector (Dialer) in a single software suite. TheGreenBow VPN Client for macOS is an IPsec IKEv2 VPN Client. It allows to configure and to open VPN tunnels with any IKEv2 gateway on the market. It enables secure remote connections to the enterprise information system. Full Control The instructions below demonstrate how to connect to the VPN service using native functionality for Mac OSX. However, due to security concerns and the need to reconfigure your connection in the future, OIT does not recommend using this ability, but rather recommends users connect using the Cisco AnyConnect client. The Client configuration described here is for a Mac OS X 10.8.2 (Mountain Lion). However, the configuration would be similar in other Mac OS X versions. The Names Server and Client Certificates are used in order to distinguish between the Certificates used in the SonicWall (Server) and the Mac OS X L2TP/IPsec Client (Client). Here is an instruction how to connect to a VPN Gate Public VPN Relay Server by using L2TP/IPsec VPN Client which is built-in on Mac OS X. On this instruction, every screen-shots are taken on Mac OS X Mountain Lion. Other versions of Mac OS X are similar to be configured, however there might be minor different on UIs.