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VPN In Cisco Pix 515

The ios is 5.1(2) and VPN is disabled. I went through the Cisco site that for enabling i need to given a new authentication key and reload the image again from the tftp server. I need to upgrade the ios to 6 and i thought i could do both simulatniously. If i need to do this should i reconfigure the entire pix from the scartch or the configuration will be in the flash and after i key in the new authenitcation key and an upgraded ios if i write in the memory will get back all the configurations? Can any one advice me. Also if i have DES encryption and if my customer has 3DES. How should i proceed in doing the vpn between both of us.

Thanks in Advance

VIP Purple

Re: VPN In Cisco Pix 515

If you have DES, and your client has 3DES, then you will need to use DES between the two of you.

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