## What is ROA?

A Route Origination Authorization details which AS is authorised to advertise which originating IP prefixes. A ROA may also include prefix length information.

## What is RPKI?

Resource Public Key Infrastructure is basically a framework for securing the routing infrastructure.
It provides a way to connect number resource information to a trust anchor.

## What is RTR?

The Resource Public Key Infrastructure (RPKI) to Router Protocol provides a way for a router to access RPKI validation information.
It provides the router with validity information regarding prefix origination:

- VALID
  The route announcement is covered by a ROA and the announcing AS is validated
- INVALID
  The route announcement is covered by a ROA and the announcing AS is invalid (possibly hijacking)
- UNKNOWN
  There exists no ROA for the route announcement

## How can I implement ROA on dn42?

On dn42 we generate ROA information from the dn42 registry.
ROA json/bird files can be generated using dn42regsrv. It is also possible to integrate this with a RTR cache server such as gortr.

### dn42regsrv

You can find a hosted example of dn42regsrv at https://explorer.burble.com/

Instructions on how to host dn42regsrv yourself can be found on the git repo of dn42regsrv.

You can also run dn42regsrv via docker (then available at 127.0.0.1:8042):

    git checkout https://git.burble.com/burble.dn42/dn42regsrv.git .
    cd contrib/docker
    ./build.sh
    docker-compose up -d

Documentation for the api endpoints can be found here: https://git.burble.com/burble.dn42/dn42regsrv/src/master/API.md

### gortr

burble kindly provides ready-to-use files for gortr here:

https://dn42.burble.com/roa/dn42_roa_46.json

You can use these to simply run gortr via docker:

    docker run -ti -p 8082:8082 cloudflare/gortr -cache https://dn42.burble.com/roa/dn42_roa_46.json -verify=false -checktime=false -bind :8082

### rtrtr

rtrtr is a RTR server from NLNet Labs. It’s compatible with the dn42regsrv ROA-JSON or burbles provided one (https://dn42.burble.com/roa/dn42_roa_46.json) too.

NLNet Labs provides an official docker image. You just have to bind mount a suitable configuration file:

    docker run -d -v /etc/rtrtr.conf:/etc/rtrtr.conf -p 323:323/tcp nlnetlabs/rtrtr -c /etc/rtrtr.conf

This is a working configuration file for dn42. Maybe change the listen addresses:

    log_level = "debug"
    log_target = "stderr"
    http-listen = []
    [units.dn42-json]
    type = "json"
    uri = "https://dn42.burble.com/roa/dn42_roa_46.json"
    refresh = 600
    [targets.dn42-rtr]
    type = "rtr"
    listen = ["0.0.0.0:323", "[::]:323"]
    unit = "dn42-json"

For more information cosult the official documentation: https://rtrtr.docs.nlnetlabs.nl/en/stable/

### Other tools / generators

- bauen1’s dn42-roagen: https://gitlab.com/bauen1/dn42-roagen
- Kioubit’s registry wizard: https://git.dn42.dev/Kioubit/RegistryWizard
- chuangzhu’s pure bash script: https://paste.sr.ht/~chuang/e98d2fe791de68a6cf5aade7877cd0dbc1cdb84e

### This is all to complicated, is there an easy all-in-one package for RTR?

TODO: Publish docker-compose-yml to git for gortr+dn42regsrv

### How do I integrate RTR with my BGP implementation

You have to consult the documentation of your implementation for that. We will provide configuration examples on the specific pages.