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I am trying to setup a Centos 5.9 VPS as a L2TP VPN server.

I am using this tutorial Tutorial but when I try to start Racoon with /etc/racoon/init.sh

it gives me an error. pfkey_open: Address family not supported by protocol

I Googled the error and found: modprobe af_key

But this solution has an error also:

FATAL: Could not load /lib/modules/2.6.18-274.el5.028stab093.2/modules.dep: No such file or directory

I also downloaded the file "af_key.ko" manually and stored it in /lib/modules/2.6.18-274.el5.028stab093.2/kernel

then executed modprobe af_key.ko

but got the error FATAL: Module af_key.ko not found

then tried depmod -a

and then lsmod

but nothing is listed. I also tried insmod af_key.ko

but got the error:

insmod: error inserting 'af_key.ko': -1 Operation not permitted

I'm stuck at this step. Can anybody point me in the right direction?

System INFO: Kernel Version: 2.6.18-274.el5.028stab093.2 OS: CentOS release 5.9 (Final)

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by the looks of it your using an OpenVZ based kernel - currently L2TP is not supported in that version of kernel, IPsec is supported inside containers since kernel 2.6.32.

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The /lib/modules folder is usually used for linux headers. Did you download your kernel's headers?

yum install linux-headers-$(uname -r)
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tanks for ur time, i used the command but it gives me the "No package linux-headers-2.6.18-274.el5.028stab093.2 available." respond – AhAd Mar 29 '13 at 10:27

IPSec is only supported in kernel 2.6.32 and above. You are using 2.6.18. As it's an OpenVZ VPS, only your provider can update this (and probably won't).

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