...From there the user can add, remove and edit vpn connections.
Editing allows configuring various options for IPsec, L2TP and PPP.
Among others, the user can configure eg. the gateway, the use of either PSK or a certificate for authentication, various L2TP options as redial- timeout and attempts and of course all important PPP options. It also allows you to configure PPP for tunnel splitting because you can add routes as you want.
When applying your settings, all necessary configuration files are written accordingly (ipsec.conf, xl2tp.conf, options.xl2tpd, opensc.conf up and down scripts ...).
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