I have a Pix 505e in London and a Sonicwall TZ180 in LA, normally we have an MPLS working between the two which facilitates server sync's, email and the like. This has been severed by some brutal builders.
I have already been given a link for Sonicwall to Pix here which looks very close to what i need: http://www.cisco.com/en/US/products/hw/vpndevc/ps2030/products_configuration_example09186a008052c9d4.shtml
The problem I have is with this line (and others??): "crypto ipsec transform-set austinlab esp-aes-256 esp-sha-hmac" as I do not have the relevant installed key on my Pix. Can I use DES instead and change the Sonicwall to match? Will there be any other problems that will arise from this or other changes in commands as a result of using a different encryption type? I am new to VPN tunnels but have an understanding of what is going on in principal.
Many thanks in advance!