On Thu, Nov 29, 2018 at 2:44 PM Alex Balashov <abalas...@evaristesys.com>
wrote:

> On Thu, Nov 29, 2018 at 02:42:26PM -0500, Roman Shpount wrote:
>
> > Some devices do this to keep a pinhole in NAT firewall open. Pleases see
> if
> > you can enable keep-alive on your proxy and the device for the same
> purpose
> > (https://tools.ietf.org/html/rfc5626#section-3.5).
>
> Yep, they may. But a few seconds is simply too aggressive.
>

Windows 7 NAT (reusing ISP connection across multiple devices) has a 4
second timeout. This is why some devices has a very small keep alive
interval.
_____________
Roman Shpount
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