| 7 | Application | Secure RPC, S/MIME |
| 6 | Presentation | na |
| 5 | Session | SSL, TLS |
| 4 | Transport | na |
| 3 | Network | IPsec |
| 2 | Datalink | PPTP, L2TP |
| 1 | Physical | na |
Related links:
by Wayne Maples [Published on 20 April 2004 / Last Updated on 20 April 2004]
| 7 | Application | Secure RPC, S/MIME |
| 6 | Presentation | na |
| 5 | Session | SSL, TLS |
| 4 | Transport | na |
| 3 | Network | IPsec |
| 2 | Datalink | PPTP, L2TP |
| 1 | Physical | na |
Related links: