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78 lines
2.2 KiB
Markdown
78 lines
2.2 KiB
Markdown
---
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title: "Guides"
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description: "Miscellaneous Guides for Configuration."
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lead: "This section contains miscellaneous guides used in the configuration."
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date: 2022-05-16T15:21:22+10:00
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draft: false
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images: []
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menu:
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configuration:
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parent: "miscellaneous"
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weight: 199500
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toc: true
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---
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## Generating a Random Alphanumeric String
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Some sections of the configuration recommend generating a random string. There are many ways to accomplish this, one
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possible way on Linux is utilizing the following command which prints a string with a length in characters of
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`${LENGTH}` to `stdout`. The string will only contain alphanumeric characters.
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```bash
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LENGTH=64
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tr -cd '[:alnum:]' < /dev/urandom | fold -w "${LENGTH}" | head -n 1 | tr -d '\n' ; echo
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```
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## Generating an RSA Keypair
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Some sections of the configuration need an RSA keypair. There are many ways to achieve this, this section explains two
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such ways.
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### openssl
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The `openssl` command on Linux can be used to generate a RSA 4096 bit keypair:
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```bash
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openssl genrsa -out private.pem 4096
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openssl rsa -in private.pem -outform PEM -pubout -out public.pem
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```
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### authelia
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The __Authelia__ docker container or CLI binary can be used to generate a RSA 4096 bit keypair:
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```bash
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docker run -u "$(id -u):$(id -g)" -v "$(pwd)":/keys authelia/authelia:latest authelia rsa generate --dir /keys
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```
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```bash
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authelia rsa generate --dir /path/to/keys
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```
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## Generating an RSA Self-Signed Certificate
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Some sections of the configuration need a certificate and it may be possible to use a self-signed certificate. There are
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many ways to achieve this, this section explains two such ways.
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### openssl
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The `openssl` command on Linux can be used to generate a RSA 4096 bit self-signed certificate for the domain
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`example.com`:
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```bash
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openssl req -x509 -nodes -newkey rsa:4096 -keyout key.pem -out cert.pem -sha256 -days 365 -subj '/CN=example.com'
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```
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### authelia
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The __Authelia__ docker container or binary can be used to generate a RSA 4096 bit self-signed certificate for the
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domain `example.com`:
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```bash
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docker run -u "$(id -u):$(id -g)" -v "$(pwd)":/keys authelia/authelia authelia certificates generate --host example.com --dir /keys
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```
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```bash
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authelia certificates generate --host example.com --dir /path/to/keys
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```
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