I am coming across some issues with site-site vpn tunnel.
Can anyone guide me on this?
Problem reported: Client cannt download the emails intermittantly but internet access is fine. 2 branch sites dont have any issues with email access.The issue is with only one site.Whenever the problem comes users can acees the emails using client VPN.To resolve this issue, i have to reset the vpn tunnel everytime then it works fine for some days but again it stops working. The exchange server has already added in the Crypto ACL. As users can access the emails using Client VPN during this issue so it not seems to be internet link issue.
Topology: I do have site-site VPN configured between the Central site ASA and 3 branch sites ASAs out of which only one branch site is having issues.
We have configured the outside and inside Interface with official ipv6 adresses, set a default route on outside Interface to our router, we also have definied a rule , which also gets hits, to permit tcp from inside Interface to any6.
In Syslog I also se...