This howto will list the steps necessary to set up a pptp server on a ReadyNAS Duo. PPtP makes a nice choice, because OSX natively supports connecting to PPtP VPNs. I think windows does also, but don't have personal experience with it.This howto guide was developed against RAIDiator 4.1.6. It may work with older versions, possibly with minor modifications.First, set up a dev environment using the instructions at http://www.readynas.com/?p=145Next, you'll need to install and set up the necessary softwareIn FrontView, create a new group named "dip" (this is needed by the ppp package that pptpd relies on.)execute apt-get install pptpdedit /etc/pptpd.conf, and set up definitions for localip and remoteip. These will need to have appropriate values for your network. There are examples in the default config file. You basically want to pick IP addresses that are within your subnet, but not used by DHCP or by computers in your network. If your local net is 192.168.0.0, you might choose something likelocalip 192.168.0.2remoteip 192.168.0.3-50optionally, turn on bcrelay in pptpd.confedit /etc/ppp/chap-secrets, and add a username and password for a VPN useredit /etc/sysctl.conf and addnet.ipv4.ip_forward 1This will tell the ReadyNAS to route your VPN client's traffic out to the rest of your network. This change will take effect on your next boot. You can go ahead and turn on routing without needing to reboot by runningecho 1 >> /proc/sys/net/ipv4/ip_forwardFinally, you'll need to build the PPP kernel modules. This howto assumes you'll be building the kernel modules directly on the NAS device. You can also cross-compile on a different box, but I'll leave that explanation to other guides.Download the Linux kernel posted at http://www.readynas.com/gplrun apt-get install libncurses5-dev (needed to run menuconfig when setting up the kernel)cd to the linux kernel directory, and run cp arch/padre/defconfig .configThere is a hardcoded cross-compile setup in the kernel build, which needs to be fixed. Edit arch/padre/Makefile, and replace the line that starts with "CROSS_COMPILE" with one like thisCROSS_COMPILE ?=run make menuconfigNavigate to the "Network Device Support -> PPP (point-to-point protocol support)" pageenable "PPP" by pressing "M" to mark it as a modulealso enable MPPE compression and async serial support.enable ppp filtering by pressing the space bar (it isn't a module, so 'M' doesn't work.)save the configuration and run make modulescp drivers/net/{ppp_async,ppp_mppe,ppp_generic,slhc}.ko /lib/modules/2.6.17.8ReadyNAS/kernel/drivers/net/mkdir /lib/modules/2.6.17.8ReadyNAS/kernel/cryptocp crypto/{sha1,arc4}.ko /lib/modules/2.6.17.8ReadyNAS/kernel/crypto/depmod -aAt this point, you should be able to connect from your VPN client, using the username and password you added to /etc/ppp/chap-secrets. The kernel will automatically load the new modules when they're needed.If you run into trouble, check /var/log/syslog on the ReadyNAS for error messages.

kraney wrote:Finally, you'll need to build the PPP kernel modules. This howto assumes you'll be building the kernel modules directly on the NAS device. You can also cross-compile on a different box, but I'll leave that explanation to other guides.Download the Linux kernel posted at http://www.readynas.com/gplrun apt-get install libncurses5-dev (needed to run menuconfig when setting up the kernel)cd to the linux kernel directory, and run cp arch/padre/defconfig .configThere is a hardcoded cross-compile setup in the kernel build, which needs to be fixed. Edit arch/padre/Makefile, and replace the line that starts with "CROSS_COMPILE" with one like thisCROSS_COMPILE ?=run make menuconfigNavigate to the "Network Device Support -> PPP (point-to-point protocol support)" pageenable "PPP" by pressing "M" to mark it as a modulealso enable MPPE compression and async serial support.enable ppp filtering by pressing the space bar (it isn't a module, so 'M' doesn't work.)save the configuration and run make modulescp drivers/net/{ppp_async,ppp_mppe,ppp_generic,slhc}.ko /lib/modules/2.6.17.8ReadyNAS/kernel/drivers/net/mkdir /lib/modules/2.6.17.8ReadyNAS/kernel/cryptocp crypto/{sha1,arc4}.ko /lib/modules/2.6.17.8ReadyNAS/kernel/crypto/depmod -aAt this point, you should be able to connect from your VPN client, using the username and password you added to /etc/ppp/chap-secrets. The kernel will automatically load the new modules when they're needed.If you run into trouble, check /var/log/syslog on the ReadyNAS for error messages.You lost me there on Step 3. Where is arch/padre/Makefile?

Any chance of getting the ppp.o binary from someone who has it already?

You lost me there on Step 3. Where is arch/padre/Makefile?It's a subdirectory inside the linux kernel source. It's the linux-2.6.17 directory within the source distribution.

sesam wrote:Any chance of getting the ppp.o binary from someone who has it already?There is no ppp.o binary. There are a total of 6 kernel modules that are built. In drivers/net, there are:ppp_async.koppp_mppe.koppp_generic.koslhc.koand in drivers/crypto, there are:sha1.koarc4.koI could potentially upload them here, but I don't see any way to add attachments. I don't want to get in the business of mailing out files one user at a time.

No attachments here, no. I can take the emailing of files to people, if you send them to me. I'm simon.bohlin and I'm a user of gmail.(Actually I've just contacted readynasfreeware.org admin (user "Who Cares?" on this forum) to try to get the files there, but I guess that'll take a while before anything happens.)

kraney

Aspirant

Sep 11, 2009

HOWTO: PPtP VPN

This howto will list the steps necessary to set up a pptp server on a ReadyNAS Duo. PPtP makes a nice choice, because OSX natively supports connecting to PPtP VPNs. I think windows does also, but don't have personal experience with it.

This howto guide was developed against RAIDiator 4.1.6. It may work with older versions, possibly with minor modifications.

First, set up a dev environment using the instructions at http://www.readynas.com/?p=145

Next, you'll need to install and set up the necessary software

In FrontView, create a new group named "dip" (this is needed by the ppp package that pptpd relies on.)

execute
```
apt-get install pptpd
```

edit /etc/pptpd.conf, and set up definitions for localip and remoteip. These will need to have appropriate values for your network. There are examples in the default config file. You basically want to pick IP addresses that are within your subnet, but not used by DHCP or by computers in your network. If your local net is 192.168.0.0, you might choose something like
```
localip 192.168.0.2
remoteip 192.168.0.3-50
```

optionally, turn on bcrelay in pptpd.conf

edit /etc/ppp/chap-secrets, and add a username and password for a VPN user

edit /etc/sysctl.conf and add
```
net.ipv4.ip_forward 1
```
This will tell the ReadyNAS to route your VPN client's traffic out to the rest of your network. This change will take effect on your next boot. You can go ahead and turn on routing without needing to reboot by running
```
echo 1 >> /proc/sys/net/ipv4/ip_forward
```

Download the Linux kernel posted at http://www.readynas.com/gpl

run
```
apt-get install libncurses5-dev
```
(needed to run menuconfig when setting up the kernel)

cd to the linux kernel directory, and run
```
cp arch/padre/defconfig .config
```

There is a hardcoded cross-compile setup in the kernel build, which needs to be fixed. Edit arch/padre/Makefile, and replace the line that starts with "CROSS_COMPILE" with one like this
```
CROSS_COMPILE ?=
```

run
```
make menuconfig
```

Navigate to the "Network Device Support -> PPP (point-to-point protocol support)" page

enable "PPP" by pressing "M" to mark it as a module

also enable MPPE compression and async serial support.

enable ppp filtering by pressing the space bar (it isn't a module, so 'M' doesn't work.)

save the configuration and run

make modules
cp drivers/net/{ppp_async,ppp_mppe,ppp_generic,slhc}.ko /lib/modules/2.6.17.8ReadyNAS/kernel/drivers/net/
mkdir /lib/modules/2.6.17.8ReadyNAS/kernel/crypto
cp crypto/{sha1,arc4}.ko /lib/modules/2.6.17.8ReadyNAS/kernel/crypto/
depmod -a

ReadyNAS Developers Network

60 Replies

Replies have been turned off for this discussion

Holm

Aspirant

Feb 02, 2012

Ok so now ive got the make menuconfig to work.
But it still wont work for me, When i try to run the PPP modules it just sais :


# modprobe ppp_generic
WARNING: Error inserting slhc (/lib/modules/2.6.37.6.RNx86_64.2.1/kernel/drivers/net/slhc.ko): Invalid module format
FATAL: Error inserting ppp_generic (/lib/modules/2.6.37.6.RNx86_64.2.1/kernel/drivers/net/ppp_generic.ko): Invalid module format

please help.

efalsken
Aspirant
Feb 02, 2012
Did you remember "make oldconfig" first?

Holm

Aspirant

Feb 02, 2012

This is all the steps I took


#apt-get update
#apt-get install build-essential
#apt-get install libncurses5-dev
#wget http://www.readynas.com/download/GPL/RNDP6xxx_4.2.1_WW_src.zip
#unzip RNDP6xxx_4.2.1_WW_src.zip d=source/
#cd source/linux-x86-2.6/
#cp arch/x86/configs/defconfig.smp .config (then i edited the config with PPP=y)
#make oldconfig
#make all
#make menuconfig
#cp drivers/net/*.ko /lib/modules/2.6.37.6.RNx86_64.2.1/kernel/drivers/net/
#depmod -a
#modprobe ppp_generic

But i get

# modprobe ppp_generic
WARNING: Error inserting slhc (/lib/modules/2.6.37.6.RNx86_64.2.1/kernel/drivers/net/slhc.ko): Invalid module format
FATAL: Error inserting ppp_generic (/lib/modules/2.6.37.6.RNx86_64.2.1/kernel/drivers/net/ppp_generic.ko): Invalid module format

efalsken
Aspirant
Feb 02, 2012
1) Doublecheck that the GPL you downloaded matches the firmware version exactly.
2) I normally don't edit the config directly. And there's a half-dozen modules you need to add. here are the ones I add:

Device Drivers
- Network Device Support
- - PPP Support
- - PPP Filtering
- - PPP Support for async serial ports
- - PPP Support for sync tty ports
- - PPP Deflate compression
- - PPP BSD-Compress compression
- - PPP MPPE compression
- - PPP over Ethernet
Cryptographic API
- Deflate compression algorithm
- Zlib compression algorithm
- LZO compression algorigm

When you copy, also make sure you get the file "slhc.ko" and "crc-ccitt.ko". I forget what their names are in the menuconfig. In all, I had to copy 12 ".ko" files into 3 different folders.

After running "modprobe" try these 2 commands to get extra error output:

tail -n30 /var/log/syslog
dmesg
Holm
Aspirant
Feb 03, 2012
Thanks alot for the help, I got it to work now. :)
eniewold
Aspirant
Mar 29, 2012
Wow, thank you guys for all the different tips in all kinds of different posts in this thread. I've got it working on a Ultra 4 with RAIDiator 4.2.19

uname -a
Linux NAS 2.6.37.6.RNx86_64.2.1 #1 SMP Mon Aug 15 16:19:41 PDT 2011 x86_64 GNU/LinuxPro 4 with

If anyone needs compliled modules, or tips; let me know! I would love to give something back to this community!
darreld
Aspirant
May 09, 2012
Hi Guys, has anyone who has got DLNA working give me some advice?

I have all VPN communcation working apart from UPnP discovery. It seems that the multicast UDP packets from my DLNA client for SSDP discovery arrive on the ppp interface but are never received by the miniDlna service (it replies on the LAN but not over VPN).

I have tried assigning non-DHCP addresses in the same subnet as the LAN /in a different subnet/ enabling bcrelay / ip forwarding etc.

It doesn't seem that this should be necessary as miniDlna is listening on all addresses and a route is defined via the tunnel back to the client, am i doing something wrong?

Thanks
inertia
Aspirant
May 13, 2012
Also trying to achieve the same thing on a custom lacie machine. Have got everything working except uPNP discovery.

Annoying, the Android music apps I use don't allow you to manually specify the server string so I also have to rely on discovery working.

Have tried with bcrelay, in the same subnet etc. Just cannot make it work.

Next step is to try openVpn as I heard this solves the problem.
NadiSofia
Aspirant
May 29, 2012
Anybody have experience about http://www.bestvpn.co.uk/android-vpn-service/ android vpn installation!
Thank you for helping me for making settings.
Etanol
Aspirant
Jun 01, 2012
Hello I have a Ultra 2 and tried everything in this thread to get it working, but everytime I run "modprobe ppp_generic" I get following output:

FATAL: Error inserting ppp_generic (/lib/modules/2.6.37.6.RNx86_64.2.2/kernel/drivers/net/ppp_generic.ko): Invalid argument

I am running the latest firmware 4.2.20 and according to "uname -a" I am using the kernel 2.6.37.6.RNx86_64.2.2. Used the matching GPL from readynas.com.

How do I solve this problem?

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HOWTO: PPtP VPN

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