[pptp-server] Problems with iPAQ clients?

[Josh Howlett]

Andrew,

What network medium (ethernet, 802.11b...) are you using?

josh.

On Sat, 15 Dec 2001, Geckomail User wrote:

> G'day everyone!
> 
> I've been lurking on the list for a while now, but this is my first post. I
> was wondering if anyone else has tried to set up a VPN server for the Compaq
> iPAQ and PocketPC 2002.
> 
> I'm running PoPToP on a box with the 2.2.19 kernel and all the patches
> suggested on the PoPToP web site, and everything works perfectly with Win98,
> Win2K and WinXP Pro clients.
> 
> When I try to connect with the iPAQ, the VPN client can establish a
> connection (it uses 128-bit stateless MPPE) and all seems to be well. It
> obtains an IP address, default gateway, DNS servers etc and becomes
> addressable on the network. I can ping it from other hosts on my home LAN -
> for hours without fail.
> 
> The problem is that as soon as I transmit any reasonable amount of data (eg.
> a web page) over the link, the VPN falls over and the iPAQ crashes (needs a
> hard reset).
> 
> I'm thinking maybe it could be the iPAQ isn't handling a full IP packet - it
> handles all the small ICMP packets, but when I send large (full) packets in
> downloading files (or even ping -s 1500 <address>) it crashes.
> 
> I've tried reducing the max MTU, thinking that perhaps it has buffer
> troubles, but to no avail. Tried settings of 1500, 1412 (same as PPPoE);
> 1000, 500 and 412. No luck - same problem.
> 
> Has anyone else experienced this kind of problem? Is there a known bug in
> PocketPC 2002's PPTP implementation? Does anyone have it working?
> 
> 
> Regards,
> Andrew
> 
> 
> 
> 
> 
> 
> 
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---------------------------------------
Josh Howlett, Network Support Officer,
Networking & Digital Communications,
Information Systems & Computing,
University of Bristol, U.K.
0117 928 7850 | josh.howlett at bris.ac.uk
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