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Old 10-27-2005, 05:56 AM   #1
Registered: Jun 2005
Posts: 53

Rep: Reputation: 15
Thumbs down openvpn is making me use windows!!!

I'm tearing my hair out on this one. I need to vpn to my work regularly and all works fine if I use windows however, I can't get the blasted thing to work in Mandriva LE 2005.

It seems that the /dev/tun0 just doesn't register any activity and I get a TLS handshake error. I monitor the tun0 interface and nothing is going in our out of it. When I use example conf files copied from the net they don't work. Even the one from the official openvpn website!!! The very first line in the conf file "client" doesn't work with linux and I have to omit it.

Below is the config file that works fine for Windows but not for linux:

client #this line doesn't work in Mandriva
dev tun
proto udp
remote 1194 #real ip address replaced by x's
resolv-retry infinite
tls-auth ta.key 1
mute-replay-warnings #this line doesn't work in Mandriva
ca ca.crt
cert xnomad.crt
key xnomad.key
ns-cert-type server #this line doesn't work in Mandriva
cipher BF-CBC
verb 3
mute 20

Even if I use a very very simple linux conf like below I don't get any activity on dev tun0 sniffing it with tcpdump brings up nothing:

dev tun0
proto udp
remote 1194 #real ip address replaced by x's

I've added the following to my /etc/modprobe.conf
I saw it mentioned in some guides that this was required in some there was no mention of it:

alias char-major-10-200 tun

And I added the following to my /etc/rc.local

modprove tun
echo 1 > /proc/sys/net/ipv4/ip_forward

I've also disabled shorewall from interfering but that hasn't helped matters either.

I'm really hoping that for once someone will have an answer for me as I've tried loads of settings and searched the net high and low for an answer.
Old 10-28-2005, 03:33 AM   #2
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Registered: May 2003
Location: /var/log/cabin
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What vpn server are you connecting to exactly? If it's cisco, they have a cisco vpn client. You seem to be lacking quite a few user/group setting as described above.
Old 10-28-2005, 06:34 AM   #3
Registered: Jun 2005
Posts: 53

Original Poster
Rep: Reputation: 15
It's an openvpn server on an FC 4 box. I don't actually think it's an authentication issue or something like that as there would have to be some activity on /dev/tun0 for that to happen. As it stands there is no traffic going through /dev/tun0 at all. Unfortunatley I'm on dual boot windows right now as I have to do some work so I can't post the openvpn output from linux.


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