PPTP's issue is that the login information is in plain text so anything snooping on the line can get it. I haven't heard of any issue with L2TP though since there's various transports available underneath it, many times ipsec which is quite strong.
But it is important to not that vpn services by their nature do absolutely nothing for privacy or protection from anything. It's like using a garden hose to connect water to your neighbor's house to avoid using your own water--pretty much pointless.
All a VPN tunnel does is make your traffic pop out somewhere else, and you don't even need to use a service to do this as there's a japanese open-source free service that can use the built-in clients in xp.
And that's the fallacy that consumers are fed. A VPN tunnel doesn't really do either.VPNs for privacy should be seen more as a way of making your location harder to figure out. Also, to protect against your ISP involving themselves in your activity.
When a service or product is free, you're the test subject. (jabbified)
VPN tunnels are great, if you know how to use them. Make a tunnel, within a tunnel, and use proxy services on top of that.
I'm not an IT expert, but I'd rather not have to go through the trouble of tracking someone like myself.
Your setup isn't really keeping anyone from tracking you since you're just one hop away from the place where the tunnel connects to the Internet. All they have to do is have an official request for the records from the VPN provider and they'll hand them over. The 'protection' you're paying for is nothing more than a farce.
Just as long as you know all that. Another layer never hurts because the reality is that's all security really is. Enough layers to make the would-be thief/spy give up.It's not a mere matter of 'protection' or a mere matter of 'privacy' in all cases.
I've already had many internal dilemmas about privacy, anonymity, et al. I figured the best I could do is make things difficult, layer by layer.
VPNs can be used for other purposes. Unlocking geo-locked content, for example.
And yes, there are always alternatives or better options available to those which are in the know.
Consider that your local traffic coming into your ISP's connection to your router can be much easier to sift through if you've got a dedicated channel for most of your routine internet activity. It helps to eliminate some troubleshooting.
But you may be just as comfortable exposing your IP address to the world at all times, sh¡tposting online somewhere, and when an attacker probes your IP address they may find something to work with. VPNs and proxies just make things a little more difficult for would-be ne'er-do-gooders.