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4
votes
2answers
6k views

openvpn: connection established, can't ping server tun interface (debian server, windows & os x clients)

My goal: I want to set up openVPN on a vServer from the company netcup, running Debian squeeze. I only want a VPN connection from client to server; clients should not be able to see each other, also ...
44
votes
7answers
64k views

Should I use tap or tun for openvpn?

What are the differences between using dev tap and dev tun for openvpn? I know the different modes cannot inter-operate. What is the technical differences, other then just layer 2 vs 3 operation. ...
1
vote
1answer
4k views

How do I debug routing problems from a virtual tun0 device?

I have a program (written by me) that creates a tun0 device and sets up a route so that packets destined for the 172.16.1.0/24 subnet can be read from this device. I'm trying to go in the other ...
0
votes
1answer
46 views

Setup openvpn as interface device only

I just setup OpenVPN client using this guide on The Geek Stuff But now (somewhat as expected) all my traffic is routed through the VPN. I actually just want to set up the interface device. Does ...
0
votes
1answer
1k views

Simple iptables port forwarding with masquerading not working

I'm trying to set up a simple VPN server on EC2 (Ubuntu 12.04) with the Android example ToyVpnServer. Its instructions: // There are several ways to play with this program. Here we just give an // ...
0
votes
1answer
2k views

openvpn: after changing to server mode, client does not create TUN device

i had a previously working configuration with the config files used in a previous question However, i've changed this now to the following configuration using server mode, everything on the logs seem ...