Is a VPN a good method for protecting data in an untrusted network? [closed]

Posted by john on Server Fault See other posts from Server Fault or by john
Published on 2012-12-15T03:12:24Z Indexed on 2012/12/15 5:07 UTC
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I will be connecting my laptop in an untrusted network. If I setup OpenVpn on a server and use a vpn client on the laptop to connect through it, is it enough? Can someone perform a MITM attack or otherwise eavesdrop on my traffic?

If someone on the local network port-scans my laptop, will the open ports be accessible to him while I use the VPN tunnel?

Is there anything else I should keep in mind?

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