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Re: openvpn - urgent help requested!



Timothy Murphy wrote:

> I'm just about the depart for a week in Italy,
> and have set up openvpn to communicate from there
> with my server at home.
> 
> I notice that ifconfig on the server gives
>     inet addr:192.168.5.1  P-t-P:192.168.5.2  Mask:255.255.255.255
> while ifconfig on the client gives
>   inet addr:192.168.5.6  P-t-P:192.168.5.5  Mask:255.255.255.255
> with a different P-t-P address.
> 
> Does this matter?
> I see from my notes that when I last carried out this exercise
> the two P-t-P addresses were the same.
> (Unfortunately that was with a different server no longer with us.)
> 
> On the previous occasion both server and client were running Fedora.
> Now the server is running Centos-5.3 and the client Fedora-10.
> 
> Any enlightenment gratefully received.

Just to follow up on myself - I'm in Italy now,
and everything works fine _except_ VPN.
I can ssh into my home server, get IMAP email from it,
and generally interact with it as I do at home,

If I ssh into my home server, ifconfig gives:
--------------------------------------------
tun0      Link encap:UNSPEC  HWaddr 
00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
          inet addr:192.168.5.1  P-t-P:192.168.5.2  Mask:255.255.255.255
          UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1500  Metric:1
          RX packets:9 errors:0 dropped:0 overruns:0 frame:0
          TX packets:9 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100
          RX bytes:756 (756.0 b)  TX bytes:1008 (1008.0 b)
--------------------------------------------
while ifconfig on my laptop gives
--------------------------------------------
tun0      Link encap:UNSPEC  HWaddr 
00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
          inet addr:192.168.5.6  P-t-P:192.168.5.5  Mask:255.255.255.255
          UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1500  Metric:1
          RX packets:3 errors:0 dropped:0 overruns:0 frame:0
          TX packets:3 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100
          RX bytes:336 (336.0 b)  TX bytes:252 (252.0 b)
-------------------------------------------- 
As I point out, the P-t-P addresses are different -
I don't know if that is significant.

Also ping from my laptop gives
--------------------------------------------
[tim mary ~]$ ping -c1 192.168.5.1
PING 192.168.5.1 (192.168.5.1) 56(84) bytes of data.
>From 192.168.5.1 icmp_seq=1 Destination Host Unreachable
--------------------------------------------
I'm not clear why it thinks it is pinging from 192.168.5.1 
and not 192.168.5.6 .
Ping from the server gives
--------------------------------------------
[tim mary ~]$ ping -c1 192.168.5.1
PING 192.168.5.1 (192.168.5.1) 56(84) bytes of data.
>From 192.168.5.1 icmp_seq=1 Destination Host Unreachable
--------------------------------------------

I guess I have not set openvpn up correctly on my laptop ...?

-- 
Timothy Murphy  
e-mail: gayleard /at/ eircom.net
tel: +353-86-2336090, +353-1-2842366
s-mail: School of Mathematics, Trinity College Dublin 



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