I'm currently cleaning up an AWS Tunnel configuration in a FG200E unit. By cleaning up I mean there has been reported timeouts fairly frequently when accessing anything on the AWS VPC this tunnel connects to. I'm going through the AWS provided VPN connection setup log for the FortiOS and noticed the previous admin set a few things wrong. The MTU size was off by 10(1438 instead of 1427) The setting "Keep Alive" was not enabled(I have since enabled it)
So my question is can a wrongly set MTU size cause these "Timeout" issues when downloading large sets of data from these tunnels? If not I'm almost out of ideas what could be causing these timeouts.
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