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encoding, encryption, nc, smtp, aaa

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Anthony Fadly 1 year ago
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## Overview

- Simple Auth
- AAA
- [AAA](#aaa)
- 2-Factor Auth
- TRUST Communications
- Encoding/Encryption
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- Digital Signatures
- CERTS
- SSH-SSL-TLS

- Encoding - everyone knows how to convert between these types of data
- Encryption - only a select group of people have the key to convert this data

```
$ nc smtp.example.com 25 # this connection is plaintext
HELO server
200
AUTH LOGIN
200
<base64 steve>
200
<base64 passwd>
```

## AAA

- Authentication (Authn)
- Authorization (Authz)
- Accounting

- Certificates have certificate authorities

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