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Update 9.405 breaks VPN

sergeanttman

upon installing the up2date version 9.405 I was no longer able to authenticate to my surveillance system over the CISCO/IOS Remote Access VPN. The firewall live log shows a successful connection to my surveillance controller, but the authentication itself fails. Upon rolling back to 9.404 and restoring my backup, my authentication works again over the VPN. The 9.405 update appears to break/interfere authentication over the VPN tunnel....



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    I can confirm the same behavior, I have been on a call with Qnap quite a bit to figure it out, but when connecting from a different Lan (over IPsec tunnel) to the network that holds the Qnap, i can authenticate, but then it stops. I can do a net use, but not browse. other ' normal'  fileshares on normal servers are performing fine without issues. just the Qnap is since recently not connecting anymore. the weird thing is that I can not even browse to it properly and no logs are giving any detail.

     

    I also excluded the device from http scanning, IPS, App.. all of it.. nothing worked. I have to say that I did notice recently more x.x.x.255 broadcasts returning back to the requesting user from the Qnap. and I look at the logs daily.

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    I can confirm the same behavior, I have been on a call with Qnap quite a bit to figure it out, but when connecting from a different Lan (over IPsec tunnel) to the network that holds the Qnap, i can authenticate, but then it stops. I can do a net use, but not browse. other ' normal'  fileshares on normal servers are performing fine without issues. just the Qnap is since recently not connecting anymore. the weird thing is that I can not even browse to it properly and no logs are giving any detail.

     

    I also excluded the device from http scanning, IPS, App.. all of it.. nothing worked. I have to say that I did notice recently more x.x.x.255 broadcasts returning back to the requesting user from the Qnap. and I look at the logs daily.

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