| Similarity | Rank | |
|---|---|---|
| TCP | 0.801 | 17992 |
| IPsec | 0.798 | 74526 |
| Authentication | 0.793 | 36752 |
| RADIUS | 0.780 | 94057 |
| SMTP | 0.779 | 33439 |
| SSL | 0.776 | 16965 |
| Kerberos | 0.771 | 73333 |
| SSH | 0.770 | 30820 |
| SFTP | 0.769 | 90968 |
| HTTP | 0.769 | 17252 |
| NAT | 0.768 | 43936 |
| PGP | 0.765 | 56050 |
| Encryption | 0.764 | 44383 |
| authentication | 0.762 | 13118 |
| Telnet | 0.753 | 76014 |
| BGP | 0.749 | 68294 |
| LDAP | 0.747 | 42054 |
| DNSSEC | 0.744 | 95359 |
| XMPP | 0.743 | 99566 |
| encryption | 0.738 | 12337 |
| Sockets | 0.732 | 81036 |
| UDP | 0.728 | 40198 |
| cryptographic | 0.728 | 49770 |
| protocol | 0.727 | 6660 |
| HTTPS | 0.727 | 49711 |