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[Openvpn-users] Can not get openvpn client working


  • Subject: [Openvpn-users] Can not get openvpn client working
  • From: "Gert Koning" <gjk@xxxxxxxxx>
  • Date: Sat, 8 Dec 2007 10:52:33 +0100 (CET)
  • Importance: Normal

Hi all,

I have been struggling for days now to get a straight forward openvpn
client setup to work - to no avail. I am trying to connect to our office
where they run an openvpn server. Different colleagues succesfully connect
to the office this way.

I am running Ubuntu 7.04 with kernel 2.6.20-16-generic on a laptop,
connected wireless (device eth1) to a DSL modem. IP address is provided by
DHCP and is mostly 192.168.1.102.  The internal network at the office is
in the 10.12.0.0 range.

This is my openvpn configuration, supplied by our network guys:

client
nobind
proto udp
dev tun
remote <ip address of our server>
user nobody
group nobody
persist-key
persist-tun
ca /etc/openvpn/ca.crt
cert /etc/openvpn/client19.crt
key /etc/openvpn/client19.key
ns-cert-type server
tls-remote office
tls-auth ta.key 1
tls-client
route-up "route add -net 10.12.0.0/16 gw `route -n |grep 10.11 | head -n1|
awk '{ print$2 }'`"
comp-lzo
keepalive 10 60
daemon

I do have the tun device:
root@sjert-laptop:~# lsmod|grep tun
tun                    12032  0

When I start openvpn:
root@sjert-laptop:~# /etc/init.d/openvpn start
Starting virtual private network daemon: clientEnter Private Key Password:
(OK).

So my password is accepted. The daemon is running:
root@sjert-laptop:/etc/openvpn# ps -ef|grep vpn
root      5524     1  0 15:04 ?        00:00:00 /usr/sbin/openvpn
--writepid /var/run/openvpn.client.pid --status
/var/run/openvpn.client.status 10 --cd /etc/openvpn --config
/etc/openvpn/client.conf

Looking at /var/log/daemon:
Dec  8 15:03:59 sjert-laptop openvpn[5523]: OpenVPN 2.0.9
i486-pc-linux-gnu [SSL] [LZO] [EPOLL] built on Mar  2 2007
Dec  8 15:03:59 sjert-laptop openvpn[5523]: IMPORTANT: OpenVPN's default
port number is now 1194, based on an official port number assignm
ent by IANA.  OpenVPN 2.0-beta16 and earlier used 5000 as the default port.
Dec  8 15:04:03 sjert-laptop openvpn[5523]: Control Channel
Authentication: using 'ta.key' as a OpenVPN static key file
Dec  8 15:04:03 sjert-laptop openvpn[5523]: LZO compression initialized
Dec  8 15:04:03 sjert-laptop openvpn[5524]: NOTE: UID/GID downgrade will
be delayed because of --client, --pull, or --up-delay
Dec  8 15:04:03 sjert-laptop openvpn[5524]: UDPv4 link local: [undef]
Dec  8 15:04:03 sjert-laptop openvpn[5524]: UDPv4 link remote:
212.45.32.70:1194

So everything looks OK, except its not working. The tun device is not
shown in ifconfig:

root@sjert-laptop:/etc/openvpn# ifconfig -a
eth0      Link encap:Ethernet  HWaddr 00:12:3F:D7:49:11
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
          Interrupt:19

eth1      Link encap:Ethernet  HWaddr 00:13:CE:13:91:3C
          inet addr:192.168.1.102  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::213:ceff:fe13:913c/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:3849 errors:0 dropped:0 overruns:0 frame:0
          TX packets:3774 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:2924710 (2.7 MiB)  TX bytes:449634 (439.0 KiB)
          Interrupt:18 Base address:0xc000 Memory:dfcfd000-dfcfdfff

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:190 errors:0 dropped:0 overruns:0 frame:0
          TX packets:190 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:78165 (76.3 KiB)  TX bytes:78165 (76.3 KiB)

And no route has been added:

root@sjert-laptop:/etc/openvpn# route -n
Kernel IP routeing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.1.0     0.0.0.0         255.255.255.0   U     0      0        0 eth1
169.254.0.0     0.0.0.0         255.255.0.0     U     1000   0        0 eth1
0.0.0.0         192.168.1.101   0.0.0.0         UG    0      0        0 eth1


The network guys at the office seem to have run out of ideas. Is there
anybody out there that can point me into the right direction?

Many thanks!
Gert Koning

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