hi all.. after scouring these forums and google, I still had trouble finding a decent guide on how to get these two units to establish a point-to-point VPN IPSec connection. I'm posting this in response to the other threads along the same line, and hoping this can help someone else.
Upon further inspection of both devices.. the Crypto settings on the Sonicwall did NOT match the AES-256 policy on the ASG 220.
The policy on the ASG was:
AES-256
Compression off, not using strict policy.
IKE Settings: AES 256 / MD5 / Group 5: MODP 1536 Lifetime: 7800 seconds
IPSec Settings: AES 256 / MD5 / Null (None) Lifetime: 3600 seconds
The policy on the SW TZ150 was:
AES-256
IKE Settings: AES 256 / SHA1 / Group 2: MODP 1024 Lifetime: 28800 seconds
IPSec Settings: AES 256 / SHA1 / Null (None) Lifetime: 28800 seconds
after matching my settings on the SW to the ASG's AES policy settings I'm set to try to connect. I'll edit this post later to reflect sucess or failure
*EDIT*
after setting this up as above, the connection is working and stable [:)] hope this helps everyone that reads it
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