HOWTO: PPtP VPN

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/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 At 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.