How to Force VPN using IPtables?

How to Force VPN using IPtables?

How to Force VPN using IPtables?
I want to force the use of VPN using iptables, therefore while VPN is disabled no outgoing traffic shall be allowed (except maybe some DHCP stuff...). Now i guess I could just block everything not going to the address of the VPN server? But then I still want to do another thing: I dont want to allow all traffic for some application, e.g. some shall have no internet access, some shall have only access to specific IP addresses. Is something like application level possible using iptables? Does iptables recognize, from which application traffic originates? And I guess when using VPN I cant filter for the real destination that comes behind the vpn server as it is probably encrypted in the vpn packets?
What is a VPN?
VPNs (Virtual Private Networks) were first used by companies to enable their employees to securely access internal systems such as email remotely (e.g. from home or while on business trips). Today they are increasingly being used for personal use by individuals to protect their privacy while online in public places (e.g. when using the wi-fi connection in a cafe) or in a country where the internet is censored / blocked (e.g. China, Saudi Arabia).
Why do I need a VPN?
Whether youre an expat living in a foreign country where the internet is heavily regulated, a mobile user constantly on the road, or just someone concerned with maintaining their privacy online, having aVPNis becoming essential.
VpnTraffic-1 tap vpn for Android,35+ Countries servers.Fast and Stable!
VpnTraffic - Unblock your Internet, Bypass location-based blocks! Select a server location to connect to,40+ Countries VPN servers worldwide.Support pptp and l2tp/ipsec.
If you need Unblock all websites Including Facebook, Twitter, and more?
If you need Change your IP address?
If you need Watch BBC iPlayer from anywhere in the World?
If you need Watch Netflix Outside the US?
VpnTraffic features:
- 1 tap connect to our vpn server,Free setup!
- Save username/passwords,only need select a server location to connect to
- No bandwidth limitations
- Encrypts your internet traffic
- Unblock government and corporate restrictions,Bypass location-based blocks.
- Unlimited switches between VPN server locations (35+ Countries Around the world)
- Support pptp and l2tp/ipsec
- Works with wifi, 3G, GSM, and all mobile data carriers
What you need is a VPN account !
Before you make an order, you can Trial our VPN Service for3 days.
Only$1.99
High Speed
All country server
buy cheap vpn at vpntraffic