On 18/11/2011 10:20, Chris Malton wrote:
> On Fri, 18 Nov 2011 09:50:38 +0000, Gordon Scott wrote:
>> I'm not sure which model our router is, I'll check next time I'm in
>> the office (or maybe 'phone and ask), but it's definitely a Draytek
>> Vigor with WiFi and three aerials, which seems from Draytek's site to
>> suggest it already supports a number of VPN connection methods.
>
> Oh dear god!  You're probably about to run into the same problem we 
> had then.
> The DrayTek 2800 series (specifically the 2820s), seem to have a nasty 
> firmware bug that causes outbound ESP packets to go walkabouts 
> somewhere in the router, especially if you're doing any kind of NAT 
> with it.
I suspect it's a 2920n. IIRC it was black, somewhat curvy and with three 
aerials at the back.
Hopefully the firmware bug is fixed/absent in this version....  
Hopefully :-/
Google finds the 2820 bug, but not a 2920 bug. Might be a good sign.
ESP packets .. those are the ones that know what data you want before 
you ask for it.  I think you'll find there's only apochyphal evidence 
that those ever get delivered anywhere  :-)
> If you find a solution, I'd love to know what you need to do.  We 
> found that a Netgear DG834 works great for testing purposes!
I use Netgear at home. They seem to get it pretty much right most of the 
time.
> Just a word of warning.
So long as you're not planning to send the boys round :-)
At this moment it feels like everything with the probable exception of 
OpenVPN is a bit of a mess.  Which probably suggests my best options.
ATB,
        Gordon.
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