In troubleshooting a VPN tunnel, if the negotiation fails due to PFS settings, which configuration aspect should be checked?

When troubleshooting a VPN tunnel and the negotiation fails specifically due to Perfect Forward Secrecy (PFS) settings, it’s essential to check the BOVPN Tunnel settings. PFS establishes a secure key exchange mechanism that ensures that even if one key is compromised, previous sessions remain secure, as it generates a new key for each session.

If PFS settings are mismatched between the two ends of the tunnel, this can lead to negotiation failures. The BOVPN Tunnel settings encompass the configurations pertaining to the tunnel's security methods, including PFS parameters. Ensuring that both ends of the VPN tunnel have consistent PFS configurations is vital for successful negotiation and establishing a secure connection.

The other configuration aspects, while important in their own contexts, do not directly pertain to the PFS settings in relation to the specific failure of the VPN tunnel negotiation you are investigating. Focusing on the BOVPN Tunnel settings allows for the identification and resolution of the original cause of the negotiation issue.