I'd like set the site to site VPN between Juniper NetScreen-5GT and Juniper SRX220. I setted both devices but the VPN not working and I see error messages in the Event Log on NetScreen-5GT.
The message is:
Rejected an IKE packet on untrust from Partner1 to LocalIP with cookies cookie1 and cookie2 because Phase 1 negotiations failed. (The preshared keys might not match.).
I tried use this proposals pre-g2-3des-sha1, pre-g2-3des-md5, pre-g2-aes128-md5, pre-g2-aes128-sha1. I don't know whats the problem. I changed the preshared key several times in both devices, so I think the problem is not password problem.
Can you help me this problem?