BTW : is it due to firewalls and iptables should be added? I'm not familiar with this
On Tue, Oct 6, 2015 at 5:12 AM, liu wen <caonimagongl...@gmail.com> wrote: > I'm following the tutorial to learn openvpn( > http://backreference.org/2010/03/26/tuntap-interface-tutorial/) > > by following the steps of the part: `let's try it` > I use openvpn to create an interface tun2, and assign an IP to it > > sudo openvpn --mktun --dev tun > sudo ip link set tun2 up > sudo ip addr add 10.0.0.1/24 dev tun2 > > then I use tcpdump to monitor the packets flowing through `tun2` > > sudo tcpdump -i tun2 > > > and I input `ping 10.0.0.2` on terminal, but I see nothing on tcpdump > output, also the `ping` is stuck without outputing anything. > > in the tutorial, it says since the tun2 interface is assinged an IP > 10.0.0.1/24, then the ping packet with 10.0.0.2 should pass through > `tun2` coz there will be a default route. But this doesn't happen in my > case. > > #sudo route -n > Kernel IP routing table > Destination Gateway Genmask Flags Metric Ref > Use Iface > 0.0.0.0 192.168.0.1 0.0.0.0 UG 0 0 > 0 wlan0 > 10.0.0.0 0.0.0.0 255.255.255.0 U 0 0 > 0 tun2 > 192.168.0.0 0.0.0.0 255.255.255.0 U 9 0 > 0 wlan0 > > > And it is also strange that the ping is stuck without outputing anything. > In the tutorial, the results should be like: > > # ping 10.0.0.2 > PING 10.0.0.2 (10.0.0.2) 56(84) bytes of data. > From 10.0.0.1 icmp_seq=2 Destination Host Unreachable > From 10.0.0.1 icmp_seq=3 Destination Host Unreachable > >
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