Dear all professional,

I am trying to configure Openvpn at my Redhat AS3 linux.

After I installed openvpn and run the command to start openvpn "openvpn --dev tun0". I get an error.

"Can't load the module
Note: Attempting fall back to kernel 2.2 TUN/TAP Interface
Cannot open TUN/TAP dev /dev/tap0 : No such file or directory (errno=2)
Exiting"

1. Done. I list I have the /dev/net/tun is exist and setting correct permission.
mknod /dev/net/tun c 10 200

2. Not Done. I run "modprobe tun" .....
Error with "Can't load the module"

3. Done. In /etc/module.conf, having "alias char-major-10-200 tun"

4. Error. At /var/log/messages
openvpn. Can't load the module

Question,
I read many linux website and I know I have not TUN module at my linux kernel. How to load the module?

Or should I need to recompile the linux kernel? If yes, how to specify it?

Or if any LINUX Professional can let me more details hot to setup Openvpn about TUN.

Thanks a lot.

Terry

You have to recompile the kernel.
from 'make menuconfig' select
Device Drivers =>Network device support => Universal TUN/TAP device driver support as (M ~ module)

Yuh..... i got it. Thanks a lot.

Terry