Could be an MTU issue. This thread has some tips on how to debug those issues.

http://forum.mikrotik.com/viewtopic.php?f=13&t=42859

Or it could be NAT…yet another reason to avoid NATing customers.

--
Blake Covarrubias

On Aug 24, 2010, at 8:14 AM, Jerry Richardson wrote:

> Is this a VPN to a corporate office? Could be at the other end.
> 
> Jerry Richardson
> Sent Mobile
> 
> On Aug 24, 2010, at 8:11 AM, "Jeremie Chism" <[email protected]> wrote:
> 
>> I thought the same thing, but it also drops while they are entering data, so 
>> there should be data moving over the connection.
>> 
>> On Tue, Aug 24, 2010 at 9:34 AM, Faisal Imtiaz <[email protected]> wrote:
>> Could be a NAT Issues or a timeout (IP SEC VPN's have two timeouts that
>> can setup).
>> 
>> 
>> Faisal Imtiaz
>> Snappy Internet & Telecom
>> 7266 SW 48 Street
>> Miami, Fl 33155
>> Tel: 305 663 5518 x 232
>> Helpdesk: 305 663 5518 option 2 Email: [email protected]
>> 
>> On 8/24/2010 10:09 AM, Jeremie Chism wrote:
>> > I have a customer on my network with a netgear VPN router. For some reason 
>> > now the VPN drops about every hour. There is no problem with the Internet, 
>> > just the VPN. The customer is setup as a 1to1 nat. I am thinking it might 
>> > be a nat issue but looking for suggestions.
>> >
>> > Sent from my iPhone
>> >
>> >
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>> 
>> -- 
>> Jeremie Chism
>> TritonDataLink
>> <ATT00001..c>
> 
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