ZyXEL Communications P-202 - Manual (Page 344)

P-202H Plus v2 Support Notes
12. Select Encryption Algorithm to DES and Authentication Algorithm to
MD5, as we configured in SSH.
13. Enter the key string 12345678 in the Preshared Key text box, and click
Apply.
14. Press Advanced button to set IKE phase 1 and phase 2 parameters.
See the VPN rule screen shot
Set IKE Phase 1 and Phase 2 parameters.
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