ROA / RPKI

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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.