64 lines
2.1 KiB
Markdown
64 lines
2.1 KiB
Markdown
# jrouter
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Home-grown alternative implementation of Apple Internet Router 3.0
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## Goals
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* Full compatibility with Apple Internet Router 3.0
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* Function on modern operating systems
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* EtherTalk support
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* Be observable (there's a HTTP server with a `/status` page)
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TashTalk could be a stretch goal, if I can acquire one!
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## Things that used to be caveats
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* Previously it would listen for all EtherTalk traffic, regardless of destination.
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Now it doesn't do that, which should help it co-exist with other routers on
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the same host.
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* You can configure an alternate Ethernet address if you are reusing the same
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network interface for multiple different EtherTalk software.
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* In addition to the configured EtherTalk network and zone, it now learns routes
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and zones from other EtherTalk routers, and should share them across AURP.
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* There's a status server. Browse to http://\[your router\]:9459/status to see
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information about the state of jrouter.
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## Caveats
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Things I plan to fix Real Soon Now:
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* Some packet types need splitting to fit within limits. Some of these aren't
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implemented yet (mainly encapsulated). The unimplemented ones seem unlikely to
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hit those limits unless you are running a lot of routers or zones locally.
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* I plan to add a Prometheus metrics endpoint and at least add log levels /
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verbosity config.
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* The AURP implementation is mostly there, but not fully complete. The main
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thing missing is sequence number checking.
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Things I plan to fix At Some Point:
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* For expediency I made it act as a _seed router_. At some point I might add
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"soft seed" functionality.
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## How to use
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WARNING: It Sorta Works™
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First, set up a `jrouter.yaml` (use the one in this repo as an example).
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TODO: explain the configuration file
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Building and running:
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```shell
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sudo apt install libpcap-dev
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go install gitea.drjosh.dev/josh/jrouter@latest
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sudo setcap 'CAP_NET_BIND_SERVICE=ep CAP_NET_RAW=ep' ~/go/bin/jrouter
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~/go/bin/jrouter
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```
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* `NET_BIND_SERVICE` is needed to bind UDP port 387 (for talking between AIRs)
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* `NET_RAW` is needed for EtherTalk
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TODO: instructions for non-Linux machines
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