We have a client with 6 sites using IPsec. Every now and again, possibly once a week, sometimes once a month, data just stops flowing from the remote Fortigate VPN server to the local MikroTik IPsec VPN client.
In order to demonstrate the symptoms of the problem I have attached a diagram.
I'm trying to connect from my Linux Mint 16 box to a CloudStack server through IPsec L2TP. Building up the connection works (pings work across the tunnel). However 30 seconds later the IPsec tunnel gets terminated out of the blue.
I would like to connect Mac OS X (Lion) with Windows Server 2008 (R2) using IPSec natively. Simplest possible settings: No certificates, no tools, no specials. Just a Windows Server with IPSec "Pre-Shared Key" Authentication. Looks like an easy job, but after weeks of research I still have no success.
Attached there's a screenshot of the Windows settings.