NO_PROPOSAL_CHOSEN — No IP proposals in the year 1995 compatible
What does this error mean?
The cryptographic parameters of the two IP-ends in the year 1995 do not match.
Probable causes
- Different algorithms
- Disfie-Hellman Groups
- Incoherent lifespans
Verification and resolution
- Compare the parameters phase 1 and phase 2
- Check encryption, authentication and DH
- Control selector subnetworks
Precaution: Avoid, enable obsolete algorithms only to get the connection.