> For the complete documentation index, see [llms.txt](https://www.xtormin.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.xtormin.com/pentesting-en-infraestructuras/servicios/http-https/certificados-tls-ssl.md).

# Certificados (TLS/SSL)

## Validez del certificado

```bash
testssl "https://ejemplo.com" | grep "Certificate Validity"
```

## Certificado autofirmado

```bash
testssl "https://ejemplo.com" | grep "Chain of trust"
```