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vpn tunnel drops

Cisco vpn clients connect to ASA. Drop tunnels randomly. 412 error code. Must re-establish tunnel. Can be up for 3 minutes or 5 hours, no pattern to this.

Any ideas would be appreciated! Thank you!

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Re: vpn tunnel drops

Try this:

1.enable isakmp nat-traversal.

Network Address Translation (NAT), including Port Address Translation (PAT), is used in many networks where IPSec is also used, but there are a number of incompatibilities that prevent IPSec packets from successfully traversing NAT devices. NAT traversal enables ESP packets to pass through one or more NAT devices.

2. upgrate VPN client to latest verion(4.8), if you have lower version.

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