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.)

HOWTO: PPtP VPN | NETGEAR Communities

60 Replies

Replies have been turned off for this discussion

invik
Aspirant
Jun 06, 2012
I have this exact problem about which I posted here: http://www.readynas.com/forum/viewtopic.php?f=35&t=63015
Unfortunately, so far, no one has answered :-(
I've rolled-back to 4.2.19 and everything is fine.
invik
Aspirant
Jun 17, 2012
The problem I had with 4.2.20 has somehow disappeared with 4.2.21.
I've posted the instructions on the thread mentioned in my post above :)
NASCHARGE
Aspirant
Jul 01, 2012
Hi,

Having some issues with this hopefully someone can point me in the right direction.

Have a Pro6 with firmware 4.2.21.
Linux NV6-PRO 2.6.37.6.RNx86_64.2.4 #1 SMP Mon May 21 16:00:40 PDT 2012 x86_64 GNU/Linux

I get the follow error.

NV6-PRO:/c/devel/2try/linux-2.6.37.6# cp drivers/net/*.ko /lib/modules/2.6.37.6.RNx86_64.2.4/kernel/drivers/net/
NV6-PRO:/c/devel/2try/linux-2.6.37.6# depmod -a
NV6-PRO:/c/devel/2try/linux-2.6.37.6# modprobe ppp_generic
FATAL: Error inserting ppp_generic (/lib/modules/2.6.37.6.RNx86_64.2.4/kernel/drivers/net/ppp_generic.ko): Invalid argument

get more info

NV6-PRO:/c/devel/2try/linux-2.6.37.6# tail -n30 /var/log/syslog
Jul 1 08:56:56 NV6-PRO kernel: ppp_generic: disagrees about version of symbol __alloc_skb
Jul 1 08:56:56 NV6-PRO kernel: ppp_generic: Unknown symbol __alloc_skb (err -22)
Jul 1 08:56:56 NV6-PRO kernel: ppp_generic: disagrees about version of symbol skb_queue_tail
Jul 1 08:56:56 NV6-PRO kernel: ppp_generic: Unknown symbol skb_queue_tail (err -22)
Jul 1 08:56:56 NV6-PRO kernel: ppp_generic: disagrees about version of symbol skb_pull
Jul 1 08:56:56 NV6-PRO kernel: ppp_generic: Unknown symbol skb_pull (err -22)
Jul 1 08:56:56 NV6-PRO kernel: ppp_generic: disagrees about version of symbol skb_push
Jul 1 08:56:56 NV6-PRO kernel: ppp_generic: Unknown symbol skb_push (err -22)
Jul 1 08:56:56 NV6-PRO kernel: ppp_generic: disagrees about version of symbol register_netdev
Jul 1 08:56:56 NV6-PRO kernel: ppp_generic: Unknown symbol register_netdev (err -22)
Jul 1 08:56:56 NV6-PRO kernel: ppp_generic: disagrees about version of symbol free_netdev
Jul 1 08:56:56 NV6-PRO kernel: ppp_generic: Unknown symbol free_netdev (err -22)
Jul 1 08:56:56 NV6-PRO kernel: ppp_generic: disagrees about version of symbol unregister_pernet_device
Jul 1 08:56:56 NV6-PRO kernel: ppp_generic: Unknown symbol unregister_pernet_device (err -22)
Jul 1 08:56:56 NV6-PRO kernel: ppp_generic: disagrees about version of symbol dev_alloc_skb
Jul 1 08:56:56 NV6-PRO kernel: ppp_generic: Unknown symbol dev_alloc_skb (err -22)
Jul 1 08:56:56 NV6-PRO kernel: ppp_generic: disagrees about version of symbol skb_queue_purge
Jul 1 08:56:56 NV6-PRO kernel: ppp_generic: Unknown symbol skb_queue_purge (err -22)
Jul 1 08:56:56 NV6-PRO kernel: ppp_generic: disagrees about version of symbol __pskb_pull_tail
Jul 1 08:56:56 NV6-PRO kernel: ppp_generic: Unknown symbol __pskb_pull_tail (err -22)
Jul 1 08:56:56 NV6-PRO kernel: ppp_generic: disagrees about version of symbol netif_rx
Jul 1 08:56:56 NV6-PRO kernel: ppp_generic: Unknown symbol netif_rx (err -22)
Jul 1 08:56:56 NV6-PRO kernel: ppp_generic: disagrees about version of symbol skb_trim
Jul 1 08:56:56 NV6-PRO kernel: ppp_generic: Unknown symbol skb_trim (err -22)
Jul 1 08:56:56 NV6-PRO kernel: ppp_generic: disagrees about version of symbol __register_chrdev
Jul 1 08:56:56 NV6-PRO kernel: ppp_generic: Unknown symbol __register_chrdev (err -22)
Jul 1 08:56:56 NV6-PRO kernel: ppp_generic: disagrees about version of symbol register_pernet_device
Jul 1 08:56:56 NV6-PRO kernel: ppp_generic: Unknown symbol register_pernet_device (err -22)
Jul 1 08:56:56 NV6-PRO kernel: ppp_generic: disagrees about version of symbol skb_queue_head
Jul 1 08:56:56 NV6-PRO kernel: ppp_generic: Unknown symbol skb_queue_head (err -22)
NV6-PRO:/c/devel/2try/linux-2.6.37.6#

ppp_generic: disagrees about version of symbol skb_copy_bits
ppp_generic: Unknown symbol skb_copy_bits (err -22)
ppp_generic: disagrees about version of symbol skb_put
ppp_generic: Unknown symbol skb_put (err -22)
ppp_generic: disagrees about version of symbol __netif_schedule
ppp_generic: Unknown symbol __netif_schedule (err -22)
ppp_generic: disagrees about version of symbol unregister_netdev
ppp_generic: Unknown symbol unregister_netdev (err -22)
ppp_generic: disagrees about version of symbol skb_dequeue
ppp_generic: Unknown symbol skb_dequeue (err -22)
ppp_generic: disagrees about version of symbol skb_pull_rcsum
ppp_generic: Unknown symbol skb_pull_rcsum (err -22)
ppp_generic: disagrees about version of symbol skb_copy_datagram_iovec
ppp_generic: Unknown symbol skb_copy_datagram_iovec (err -22)
ppp_generic: disagrees about version of symbol pskb_expand_head
ppp_generic: Unknown symbol pskb_expand_head (err -22)
ppp_generic: disagrees about version of symbol kfree_skb
ppp_generic: Unknown symbol kfree_skb (err -22)
ppp_generic: disagrees about version of symbol alloc_netdev_mq
ppp_generic: Unknown symbol alloc_netdev_mq (err -22)
ppp_generic: disagrees about version of symbol __alloc_skb
ppp_generic: Unknown symbol __alloc_skb (err -22)
ppp_generic: disagrees about version of symbol skb_queue_tail
ppp_generic: Unknown symbol skb_queue_tail (err -22)
ppp_generic: disagrees about version of symbol skb_pull
ppp_generic: Unknown symbol skb_pull (err -22)
ppp_generic: disagrees about version of symbol skb_push
ppp_generic: Unknown symbol skb_push (err -22)
ppp_generic: disagrees about version of symbol register_netdev
ppp_generic: Unknown symbol register_netdev (err -22)
ppp_generic: disagrees about version of symbol free_netdev
ppp_generic: Unknown symbol free_netdev (err -22)
ppp_generic: disagrees about version of symbol unregister_pernet_device
ppp_generic: Unknown symbol unregister_pernet_device (err -22)
ppp_generic: disagrees about version of symbol dev_alloc_skb
ppp_generic: Unknown symbol dev_alloc_skb (err -22)
ppp_generic: disagrees about version of symbol skb_queue_purge
ppp_generic: Unknown symbol skb_queue_purge (err -22)
ppp_generic: disagrees about version of symbol __pskb_pull_tail
ppp_generic: Unknown symbol __pskb_pull_tail (err -22)
ppp_generic: disagrees about version of symbol netif_rx
ppp_generic: Unknown symbol netif_rx (err -22)
ppp_generic: disagrees about version of symbol skb_trim
ppp_generic: Unknown symbol skb_trim (err -22)
ppp_generic: disagrees about version of symbol __register_chrdev
ppp_generic: Unknown symbol __register_chrdev (err -22)
ppp_generic: disagrees about version of symbol register_pernet_device
ppp_generic: Unknown symbol register_pernet_device (err -22)
ppp_generic: disagrees about version of symbol skb_queue_head
ppp_generic: Unknown symbol skb_queue_head (err -22)
ppp_generic: disagrees about version of symbol skb_copy_bits
ppp_generic: Unknown symbol skb_copy_bits (err -22)
ppp_generic: disagrees about version of symbol skb_put
ppp_generic: Unknown symbol skb_put (err -22)
ppp_generic: disagrees about version of symbol __netif_schedule
ppp_generic: Unknown symbol __netif_schedule (err -22)
ppp_generic: disagrees about version of symbol unregister_netdev
ppp_generic: Unknown symbol unregister_netdev (err -22)
ppp_generic: disagrees about version of symbol skb_dequeue
ppp_generic: Unknown symbol skb_dequeue (err -22)
ppp_generic: disagrees about version of symbol skb_pull_rcsum
ppp_generic: Unknown symbol skb_pull_rcsum (err -22)
ppp_generic: disagrees about version of symbol skb_copy_datagram_iovec
ppp_generic: Unknown symbol skb_copy_datagram_iovec (err -22)
ppp_generic: disagrees about version of symbol pskb_expand_head
ppp_generic: Unknown symbol pskb_expand_head (err -22)
ppp_generic: disagrees about version of symbol kfree_skb
ppp_generic: Unknown symbol kfree_skb (err -22)
ppp_generic: disagrees about version of symbol alloc_netdev_mq
ppp_generic: Unknown symbol alloc_netdev_mq (err -22)
ppp_generic: disagrees about version of symbol __alloc_skb
ppp_generic: Unknown symbol __alloc_skb (err -22)
ppp_generic: disagrees about version of symbol skb_queue_tail
ppp_generic: Unknown symbol skb_queue_tail (err -22)
ppp_generic: disagrees about version of symbol skb_pull
ppp_generic: Unknown symbol skb_pull (err -22)
ppp_generic: disagrees about version of symbol skb_push
ppp_generic: Unknown symbol skb_push (err -22)
ppp_generic: disagrees about version of symbol register_netdev
ppp_generic: Unknown symbol register_netdev (err -22)
ppp_generic: disagrees about version of symbol free_netdev
ppp_generic: Unknown symbol free_netdev (err -22)
ppp_generic: disagrees about version of symbol unregister_pernet_device
ppp_generic: Unknown symbol unregister_pernet_device (err -22)
ppp_generic: disagrees about version of symbol dev_alloc_skb
ppp_generic: Unknown symbol dev_alloc_skb (err -22)
ppp_generic: disagrees about version of symbol skb_queue_purge
ppp_generic: Unknown symbol skb_queue_purge (err -22)
ppp_generic: disagrees about version of symbol __pskb_pull_tail
ppp_generic: Unknown symbol __pskb_pull_tail (err -22)
ppp_generic: disagrees about version of symbol netif_rx
ppp_generic: Unknown symbol netif_rx (err -22)
ppp_generic: disagrees about version of symbol skb_trim
ppp_generic: Unknown symbol skb_trim (err -22)
ppp_generic: disagrees about version of symbol __register_chrdev
ppp_generic: Unknown symbol __register_chrdev (err -22)
ppp_generic: disagrees about version of symbol register_pernet_device
ppp_generic: Unknown symbol register_pernet_device (err -22)
ppp_generic: disagrees about version of symbol skb_queue_head
ppp_generic: Unknown symbol skb_queue_head (err -22)
ppp_generic: disagrees about version of symbol skb_copy_bits
ppp_generic: Unknown symbol skb_copy_bits (err -22)
ppp_generic: disagrees about version of symbol skb_put
ppp_generic: Unknown symbol skb_put (err -22)
ppp_generic: disagrees about version of symbol __netif_schedule
ppp_generic: Unknown symbol __netif_schedule (err -22)
ppp_generic: disagrees about version of symbol unregister_netdev
ppp_generic: Unknown symbol unregister_netdev (err -22)
ppp_generic: disagrees about version of symbol skb_dequeue
ppp_generic: Unknown symbol skb_dequeue (err -22)
ppp_generic: disagrees about version of symbol skb_pull_rcsum
ppp_generic: Unknown symbol skb_pull_rcsum (err -22)
ppp_generic: disagrees about version of symbol skb_copy_datagram_iovec
ppp_generic: Unknown symbol skb_copy_datagram_iovec (err -22)
ppp_generic: disagrees about version of symbol pskb_expand_head
ppp_generic: Unknown symbol pskb_expand_head (err -22)
ppp_generic: disagrees about version of symbol kfree_skb
ppp_generic: Unknown symbol kfree_skb (err -22)
ppp_generic: disagrees about version of symbol alloc_netdev_mq
ppp_generic: Unknown symbol alloc_netdev_mq (err -22)
ppp_generic: disagrees about version of symbol __alloc_skb
ppp_generic: Unknown symbol __alloc_skb (err -22)
ppp_generic: disagrees about version of symbol skb_queue_tail
ppp_generic: Unknown symbol skb_queue_tail (err -22)
ppp_generic: disagrees about version of symbol skb_pull
ppp_generic: Unknown symbol skb_pull (err -22)
ppp_generic: disagrees about version of symbol skb_push
ppp_generic: Unknown symbol skb_push (err -22)
ppp_generic: disagrees about version of symbol register_netdev
ppp_generic: Unknown symbol register_netdev (err -22)
ppp_generic: disagrees about version of symbol free_netdev
ppp_generic: Unknown symbol free_netdev (err -22)
ppp_generic: disagrees about version of symbol unregister_pernet_device
ppp_generic: Unknown symbol unregister_pernet_device (err -22)
ppp_generic: disagrees about version of symbol dev_alloc_skb
ppp_generic: Unknown symbol dev_alloc_skb (err -22)
ppp_generic: disagrees about version of symbol skb_queue_purge
ppp_generic: Unknown symbol skb_queue_purge (err -22)
ppp_generic: disagrees about version of symbol __pskb_pull_tail
ppp_generic: Unknown symbol __pskb_pull_tail (err -22)
ppp_generic: disagrees about version of symbol netif_rx
ppp_generic: Unknown symbol netif_rx (err -22)
ppp_generic: disagrees about version of symbol skb_trim
ppp_generic: Unknown symbol skb_trim (err -22)
ppp_generic: disagrees about version of symbol __register_chrdev
ppp_generic: Unknown symbol __register_chrdev (err -22)
ppp_generic: disagrees about version of symbol register_pernet_device
ppp_generic: Unknown symbol register_pernet_device (err -22)
ppp_generic: disagrees about version of symbol skb_queue_head
ppp_generic: Unknown symbol skb_queue_head (err -22)
NV6-PRO:/c/devel/2try/linux-2.6.37.6#

I have tried this with GPL 4.2.16 & 4.2.19 with same result. have I missed something.

tried to do with 4.2.21 GPL but couldnt find the correct files. (linux directory linux-atm....)

Any help would be greatly appreciated.
NASCHARGE
Aspirant
Jul 01, 2012
invik wrote:
I have this exact problem about which I posted here: viewtopic.php?f=35&t=63015
Unfortunately, so far, no one has answered :-(
I've rolled-back to 4.2.19 and everything is fine.

Followed this link and all working with 4.2.21.

Thanks for the info :D
invik
Aspirant
Jul 07, 2012
You're welcome :)

invik wrote:
I have this exact problem about which I posted here: viewtopic.php?f=35&t=63015 Unfortunately, so far, no one has answered :-( I've rolled-back to 4.2.19 and everything is fine.

wizzard

Aspirant

Jul 13, 2012

What ports do I need to farward in my router?

Edit: probably not port errors.

On Iphone I get this error

VPN Connection
You are discionected by the communication device. *Try reconnecting. If the problem continues, verfy your settings.

Log from readynas

Jul 13 05:52:53 readynas pptpd[1527]: GRE: read(fd=6,buffer=8058640,len=8196) from PTY failed: status = -1 error = Input/output error, usually caused by unexpected termination of pppd, check option syntax and pppd logs
Jul 13 05:52:53 readynas pptpd[1527]: CTRL: PTY read or GRE write failed (pty,gre)=(6,7)
Jul 13 05:52:53 readynas pptpd[1527]: CTRL: Reaping child PPP[1528]
Jul 13 05:52:53 readynas pptpd[1527]: CTRL: Client 109.58.145.xxx control connection finished
Jul 13 05:52:53 readynas kernel: ppp_async: Unknown symbol crc_ccitt_table (err 0)
Jul 13 05:53:02 readynas pptpd[1536]: CTRL: Client 109.58.145.xxx1 control connection started
Jul 13 05:53:03 readynas pptpd[1536]: CTRL: Starting call (launching pppd, opening GRE)
Jul 13 05:53:03 readynas pppd[1537]: Plugin /usr/lib/pptpd/pptpd-logwtmp.so loaded.
Jul 13 05:53:03 readynas pppd[1537]: pppd 2.4.4 started by root, uid 0
Jul 13 05:53:03 readynas kernel: ppp_async: Unknown symbol crc_ccitt_table (err 0)
Jul 13 05:53:03 readynas modprobe: FATAL: Error inserting ppp_async (/lib/modules/2.6.37.6.RNx86_64.2.4/kernel/drivers/net/ppp_async.ko): Unknown symbol in module, or unknown parameter (see dmesg)
Jul 13 05:53:03 readynas pppd[1537]: Couldn't set tty to PPP discipline: Invalid argument
Jul 13 05:53:03 readynas pppd[1537]: Exit.
Jul 13 05:53:03 readynas pptpd[1536]: GRE: read(fd=6,buffer=8058640,len=8196) from PTY failed: status = -1 error = Input/output error, usually caused by unexpected termination of pppd, check option syntax and pppd logs
Jul 13 05:53:03 readynas pptpd[1536]: CTRL: PTY read or GRE write failed (pty,gre)=(6,7)
Jul 13 05:53:03 readynas pptpd[1536]: CTRL: Reaping child PPP[1537]
Jul 13 05:53:03 readynas pptpd[1536]: CTRL: Client 109.58.145.xxx control connection finished
Jul 13 06:11:39 readynas udhcpc[2427]: Sending renew...
Jul 13 06:11:39 readynas udhcpc[2427]: Lease of 192.168.1.106 obtained, lease time 3600
Jul 13 06:25:06 readynas syslogd 1.4.1#18: restart.
Jul 13 06:41:39 readynas udhcpc[2427]: Sending renew...
Jul 13 06:41:39 readynas udhcpc[2427]: Lease of 192.168.1.106 obtained, lease time 3600
Jul 13 07:11:40 readynas udhcpc[2427]: Sending renew...
Jul 13 07:11:40 readynas udhcpc[2427]: Lease of 192.168.1.106 obtained, lease time 3600
Jul 13 07:15:23 readynas pptpd[1961]: CTRL: Client 109.58.145.xxx control connection started
Jul 13 07:15:25 readynas pptpd[1961]: CTRL: Starting call (launching pppd, opening GRE)
Jul 13 07:15:25 readynas pppd[1962]: Plugin /usr/lib/pptpd/pptpd-logwtmp.so loaded.
Jul 13 07:15:25 readynas pppd[1962]: pppd 2.4.4 started by root, uid 0
Jul 13 07:15:25 readynas modprobe: FATAL: Error inserting ppp_async (/lib/modules/2.6.37.6.RNx86_64.2.4/kernel/drivers/net/ppp_async.ko): Unknown symbol in module, or unknown parameter (see dmesg)
Jul 13 07:15:25 readynas pppd[1962]: Couldn't set tty to PPP discipline: Invalid argument
Jul 13 07:15:25 readynas pppd[1962]: Exit.
Jul 13 07:15:25 readynas pptpd[1961]: GRE: read(fd=6,buffer=8058640,len=8196) from PTY failed: status = -1 error = Input/output error, usually caused by unexpected termination of pppd, check option syntax and pppd logs
Jul 13 07:15:25 readynas pptpd[1961]: CTRL: PTY read or GRE write failed (pty,gre)=(6,7)
Jul 13 07:15:25 readynas pptpd[1961]: CTRL: Reaping child PPP[1962]
Jul 13 07:15:25 readynas pptpd[1961]: CTRL: Client 109.58.145.xxx control connection finished
Jul 13 07:15:25 readynas kernel: ppp_async: Unknown symbol crc_ccitt_table (err 0)
Jul 13 07:23:06 readynas pptpd[1977]: CTRL: Client 109.58.145.xxx control connection started
Jul 13 07:23:07 readynas pptpd[1977]: CTRL: Starting call (launching pppd, opening GRE)
Jul 13 07:23:07 readynas pppd[1978]: Plugin /usr/lib/pptpd/pptpd-logwtmp.so loaded.
Jul 13 07:23:07 readynas pppd[1978]: pppd 2.4.4 started by root, uid 0
Jul 13 07:23:07 readynas modprobe: FATAL: Error inserting ppp_async (/lib/modules/2.6.37.6.RNx86_64.2.4/kernel/drivers/net/ppp_async.ko): Unknown symbol in module, or unknown parameter (see dmesg)
Jul 13 07:23:07 readynas pppd[1978]: Couldn't set tty to PPP discipline: Invalid argument
Jul 13 07:23:07 readynas pppd[1978]: Exit.
Jul 13 07:23:07 readynas pptpd[1977]: GRE: read(fd=6,buffer=8058640,len=8196) from PTY failed: status = -1 error = Input/output error, usually caused by unexpected termination of pppd, check option syntax and pppd logs
Jul 13 07:23:07 readynas pptpd[1977]: CTRL: PTY read or GRE write failed (pty,gre)=(6,7)
Jul 13 07:23:07 readynas pptpd[1977]: CTRL: Reaping child PPP[1978]
Jul 13 07:23:07 readynas pptpd[1977]: CTRL: Client 109.58.145.xxx control connection finished
Jul 13 07:23:07 readynas kernel: ppp_async: Unknown symbol crc_ccitt_table (err 0)

hooper
Aspirant
Feb 02, 2013
Sorry to bring up an old thread, but thanks for all the help! Just curious what kind of throughput folks are seeing with this setup? I seem to be limited to around 1 to 1.5 Mbps throughput.

One other thing to note. I did have to specify a DNS server in pptpd-options for traffic to start passing.
efalsken
Aspirant
Feb 02, 2013
Most residential ISPs will throttle your upload throughput to about 1 mbps or (10-20 kB/sec) after a few minutes of uploading. Unfortunately, this is not a limit of the ReadyNAS, PPTP, or of your modem.

thequarter84

Aspirant

Aug 15, 2013

Hi guys, I follow your suggests and I was lucky... a make without an error :)
I can't still connect to the server

This is modprobe result:


root@LEONAS:~# modprobe ppp_generic
WARNING: All config files need .conf: /etc/modprobe.d/blacklist, it will be ignored in a future release.
WARNING: All config files need .conf: /etc/modprobe.d/display_class, it will be ignored in a future release.
WARNING: All config files need .conf: /etc/modprobe.d/pnp-hotplug, it will be ignored in a future release.


root@LEONAS:~# tail -f /var/log/syslog
Aug 15 17:31:50 LEONAS avahi-daemon[3987]: Registering new address record for 10.1.3.251 on eth0.IPv4.
Aug 15 17:31:50 LEONAS avahi-daemon[3987]: Registering HINFO record with values 'ARMV5TEL'/'LINUX'.
Aug 15 17:31:50 LEONAS avahi-daemon[3987]: Server startup complete. Host name is LEONAS.local. Local service cookie is 125115100.
Aug 15 17:31:51 LEONAS avahi-daemon[3987]: Service "ReadyNAS Discovery [LEONAS]" (/services/readynas.service) successfully established.
Aug 15 17:31:51 LEONAS avahi-daemon[3987]: Service "FrontView on LEONAS" (/services/frontview.service) successfully established.
Aug 15 17:31:51 LEONAS avahi-daemon[3987]: Service "LEONAS (CIFS)" (/services/cifs.service) successfully established.
Aug 15 17:31:51 LEONAS avahi-daemon[3987]: Service "LEONAS (AFP)" (/services/afp.service) successfully established.
Aug 15 17:32:58 LEONAS kernel: program smartctl.org is using a deprecated SCSI ioctl, please convert it to SG_IO
Aug 15 17:32:58 LEONAS last message repeated 12 times
Aug 15 17:34:45 LEONAS kernel: PPP generic driver version 2.4.2
Aug 15 17:35:18 LEONAS pptpd[4111]: CTRL: Client 176.244.210.55 control connection started
Aug 15 17:35:19 LEONAS pptpd[4111]: CTRL: Starting call (launching pppd, opening GRE)                                
Aug 15 17:35:19 LEONAS pppd[4118]: Plugin /usr/lib/pptpd/pptpd-logwtmp.so loaded.                                    
Aug 15 17:35:19 LEONAS pppd[4118]: pppd 2.4.5 started by root, uid 0                                                 
Aug 15 17:35:19 LEONAS kernel: ppp_async: Unknown symbol crc_ccitt_table                                             
Aug 15 17:35:19 LEONAS modprobe: FATAL: Error inserting ppp_async (/lib/modules/2.6.31.8.duov2/kernel/drivers/ppp_asyter (see dmesg)                                                                                                      
Aug 15 17:35:19 LEONAS pppd[4118]: Couldn't set tty to PPP discipline: Invalid argument                              
Aug 15 17:35:19 LEONAS pppd[4118]: Exit.                                                                             
Aug 15 17:35:19 LEONAS pptpd[4111]: GRE: read(fd=7,buffer=1bce8,len=8196) from PTY failed: status = -1 error = Input/ion of pppd, check option syntax and pppd logs                                                                       
Aug 15 17:35:19 LEONAS pptpd[4111]: CTRL: PTY read or GRE write failed (pty,gre)=(7,8)                               
Aug 15 17:35:19 LEONAS pptpd[4111]: CTRL: Reaping child PPP[4118]
Aug 15 17:35:19 LEONAS pptpd[4111]: CTRL: Client 176.244.210.55 control connection finished

is ppp_async my problem? what did I wrong?
thanks
Paolo

efalsken
Aspirant
Aug 15, 2013
Looks like you need the the CRC crypto modules too. I think it's back on page 2 of this thread, there's a list of additional modules needed and the folders that the .ko file will be in after the build.

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