1. Peer-to-peer and client-server.
2. (a) IPsec; (b) OpenVPN; 9c) OpenVPN.
3. 500.
4. Mobile Client Configuration.
5. (a) None; (b) Challenge Handshake Authentication Protocol, MS-CHAP, and Password Authentication Protocol (PAP).
6. ECDH Only, to enable Elliptic Curve Diffie-Hellman.
7. OpenVPN Client Export Utility.
8. 4500.