VPN client breaks the tunnel between sites (not with Cisco)
I have customer considering replacement of existing SonicWall firewall appliances with Cisco solution. The idea is to install/configure two PIX506E and one PIX515 (with DMZ), utilizing IPSec and providing access to remote users over Ciscos VPN clients.
The challenge customer currently has is that every time when the VPN client accesses the network remotely, the firewalls stop processing IPSec and VPN tunnel between two peers brake down. The only solution to establish connectivity is to restart firewalls on both sides. This start happening when the firewalls firmware have been upgraded.
I would like to know if you heard about this problem in Cisco world. Have you had to deal with similar problem(s) using Cisco equipment?
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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...