I have a ISA570W exhibiting some strange behavior when trying to establish a VPN connection. After a fresh reboot everything connects fine, the session gets authenticated and I can access local resources. However, disconnecting and then trying to connect little later the system acts like the VPN service isn't even available anymore and it refuses every attempt at connecting. I noticed some previous discussions about SSL VPNs exhibiting this kind of phenomena however there doesn't seem to be a fix yet or any mention of this issue for IPSec-based Remote Access. I've tried downgrading my firmware to 1.1.13 from 1.2.19 with no success or change in behavior from the system and have disabled all the security services and attack protections. Nothing seems to help. I've been connecting using OS X 10.9 and iOS 7.1, on either device the connection gets refused in the same manner. Does anyone have any thoughts on this? It seems to be a bug but I want to rule out any settings error I may have on the system first.
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