tls Binding

Zilla runtime tls binding.

tls_server:
  type: tls
  kind: server
  vault: server
  options:
    keys:
      - localhost
    sni:
      - localhost
    alpn:
      - echo
  routes:
    - when:
        - alpn: echo
    exit: echo_server

Summary

Defines a binding with tls protocol support, with server, client or proxy behavior.

Server behavior

The server kind tls binding decodes encrypted TLS protocol on the inbound network stream, producing higher level cleartext application streams for each request.

Certificates and keys required to complete the TLS handshake are provided by a vault referenced in the binding configuration.

Conditional routes based on tls hostname authority or negotiated ALPN protocol are used to route these streams to an exit binding.

Client behavior

The client kind tls binding receives inbound application streams and encodes each as an encrypted network stream via TLS protocol.

Certificates and keys required to complete the TLS handshake are provided by a vault referenced in the binding configuration.

Conditional routes based on tls hostname authority or negotiated ALPN protocol are used to route these streams to an exit binding.

Proxy behavior

The proxy kind tls binding detects ClientHello server_name extension to provide TLS virtual hosting by routing based on server name.

A vault is not required to proxy TLS protocol as the handshake is only observed read-only as it routes through the tls proxy binding.

Configuration

Properties

• kind*
• vault
• options
• options.version
• options.keys
• options.trust
• options.signers
• options.trustcacerts
• options.sni*
• options.alpn
• options.mutual
• exit
• routes
• routes[].guarded
• routes[].when
  • when[].authority
  • when[].alpn
• routes[].exit*

* required

kind*

enum [ "client", "server", "proxy" ]

Behave as a tls client, server or proxy.

vault

string

Vault name.

options

object

tls-specific options.

options:
  keys:
  - localhost
  sni:
  - localhost
  alpn:
  - echo

options.version

string

Protocol version.

options.keys

array of string

A list of reference names for the Vault key.

options.trust

array of string

A list of reference names for the Vault certificate.

options.signers

array of string

A list of reference names for the Vault signer certificate.

options.trustcacerts

boolean

Trust CA certificates.

options.sni*

array of string

A list of the Server Name Indications.

options.alpn

array of string

Application protocols.

options.mutual

enum [ "required", "requested", "none" ] | Default: "none"

Mutual authentication

exit

string

Default exit binding when no conditional routes are viable.

exit: echo_server

routes

array of object

Conditional tls-specific routes.

routes:
  - when:
      - alpn: echo
  exit: echo_server

routes[].guarded

object as named map of string:string array

List of roles required by each named guard to authorize this route.

routes:
  - guarded:
      test:
        - read:items

routes[].when

array of object

List of conditions (any match) to match this route.
Read more: When a route matches

routes:
  - when:
      - alpn: echo

when[].authority

string

Associated authority.

when[].alpn

string

Application protocol.

routes[].exit*

string

Next binding when following this route.

routes:
  - when:
    ...
    exit: echo_server

---

* required