SynopsisThe remote IKEv1 service supports Aggressive Mode with Pre-Shared key.
DescriptionThe remote Internet Key Exchange (IKE) version 1 service seems to support Aggressive Mode with Pre-Shared key (PSK) authentication. Such a configuration could allow an attacker to capture and crack the PSK of a VPN gateway and gain unauthorized access to private networks.
Solution- Disable Aggressive Mode if supported.
- Do not use Pre-Shared key for authentication if it's possible.
- If using Pre-Shared key cannot be avoided, use very strong keys.
- If possible, do not allow VPN connections from any IP addresses.
Note that this plugin does not run over IPv6.