Cisco vpn client drops intermittently

Unanswered Question
Sep 16th, 2010

My Cisco vpn client drops intermittently. It happens even on different Internet providers, cable or dsl.

I'm thinking it must be a setting in my computer. No other users are complaining about the same issue.

We have a ASA 5520.

Any help would be appreciated.

I have this problem too.
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Russell Pearson Thu, 09/16/2010 - 10:51

Here's the log

1      10:31:30.801  09/16/10  Sev=Warning/3 IKE/0xE300002C
ISAKMP header invalid: Invalid version 8.6 found

2      10:31:30.801  09/16/10  Sev=Warning/3 IKE/0xE3000039
Received an invalid or malformed IKE packet: message id = 0xE6335117

3      10:31:33.160  09/16/10  Sev=Warning/3 IKE/0xE300002C
ISAKMP header invalid: Invalid version 8.11 found

4      10:31:33.160  09/16/10  Sev=Warning/3 IKE/0xE3000039
Received an invalid or malformed IKE packet: message id = 0x8BA13D9C

5      10:31:38.160  09/16/10  Sev=Warning/3 IKE/0xE300002C
ISAKMP header invalid: Invalid version 4.4 found

6      10:31:38.160  09/16/10  Sev=Warning/3 IKE/0xE3000039
Received an invalid or malformed IKE packet: message id = 0x8342AD71

7      10:31:43.159  09/16/10  Sev=Warning/3 IKE/0xE300002C
ISAKMP header invalid: Invalid version 9.14 found

8      10:31:43.159  09/16/10  Sev=Warning/3 IKE/0xE3000039
Received an invalid or malformed IKE packet: message id = 0x3977561E

9      10:31:49.346  09/16/10  Sev=Warning/3 IKE/0xE300002C
ISAKMP header invalid: Invalid version 3.14 found

10     10:31:49.346  09/16/10  Sev=Warning/3 IKE/0xE3000039
Received an invalid or malformed IKE packet: message id = 0xCCC424F7

Kimberly Adams Tue, 10/12/2010 - 08:32

What version of the VPN client are you running?  Are you running any windows firewall and are you running IPSec over TCP or UDP?

Any additional information you can provide on this would help us to help you.

Thanks,

Kimberly

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