# Segurança - Primeiros Passos

Vamos imaginar que você tem a sua API **backend** em algum domínio.

E você tem um **frontend** em outro domínio ou em um path diferente no mesmo domínio (ou em uma aplicação mobile).

E você quer uma maneira de o frontend autenticar o backend, usando um **username** e **senha**.

Nós podemos usar o **OAuth2** junto com o **FastAPI**.

# The preview profile contains features that are experimental.
# This is intended to explore new features coming to Istio.
# Stability, security, and performance are not guaranteed - use at your own risk.
apiVersion: install.istio.io/v1alpha1
kind: IstioOperator
spec:
  values:

## Conect-se com o autor

Você pode se conectar <a href="https://tiangolo.com" class="external-link" target="_blank">comigo (Sebastián Ramírez / `tiangolo`)</a>, o autor.

Você pode:

* <a href="https://github.com/tiangolo" class="external-link" target="_blank">Me siga no **GitHub**</a>.

# If you want to make a change in this file, edit the original one and run "make gen".

# The preview profile contains features that are experimental.
# This is intended to explore new features coming to Istio.
# Stability, security, and performance are not guaranteed - use at your own risk.
meshConfig:
  defaultConfig:
    proxyMetadata:
      # Enable Istio agent to handle DNS requests for known hosts

# If you want to make a change in this file, edit the original one and run "make gen".

# The preview profile contains features that are experimental.
# This is intended to explore new features coming to Istio.
# Stability, security, and performance are not guaranteed - use at your own risk.
meshConfig:
  defaultConfig:
    proxyMetadata:
      # Enable Istio agent to handle DNS requests for known hosts

# If you want to make a change in this file, edit the original one and run "make gen".

# The preview profile contains features that are experimental.
# This is intended to explore new features coming to Istio.
# Stability, security, and performance are not guaranteed - use at your own risk.
meshConfig:
  defaultConfig:
    proxyMetadata:
      # Enable Istio agent to handle DNS requests for known hosts

# If you want to make a change in this file, edit the original one and run "make gen".

# The preview profile contains features that are experimental.
# This is intended to explore new features coming to Istio.
# Stability, security, and performance are not guaranteed - use at your own risk.
meshConfig:
  defaultConfig:
    proxyMetadata:
      # Enable Istio agent to handle DNS requests for known hosts

# If you want to make a change in this file, edit the original one and run "make gen".

# The preview profile contains features that are experimental.
# This is intended to explore new features coming to Istio.
# Stability, security, and performance are not guaranteed - use at your own risk.
meshConfig:
  defaultConfig:
    proxyMetadata:
      # Enable Istio agent to handle DNS requests for known hosts

# If you want to make a change in this file, edit the original one and run "make gen".

# The preview profile contains features that are experimental.
# This is intended to explore new features coming to Istio.
# Stability, security, and performance are not guaranteed - use at your own risk.
meshConfig:
  defaultConfig:
    proxyMetadata:
      # Enable Istio agent to handle DNS requests for known hosts

# If you want to make a change in this file, edit the original one and run "make gen".

# The preview profile contains features that are experimental.
# This is intended to explore new features coming to Istio.
# Stability, security, and performance are not guaranteed - use at your own risk.
meshConfig:
  defaultConfig:
    proxyMetadata:
      # Enable Istio agent to handle DNS requests for known hosts