Be grateful if you can shed some light on this wierd problem.
I have 2 pix 501 firewalls on seperate sites connecting back to a central Cisco VPN3020 vpn concentrator.
The 2 VPN's are established without any problems but every 6hrs 48mins the VPN's drop, stay down for 1hour and are then re-established.
The only way we can get round this currently is to reboot the Cisco PIX 501 firewalls. When this is performed the vpn is immediately established but again after 6hrs 48mins the vpn tunnel is dropped.
Any help will be gratefully received.