2024-03-10 10:58:53 +11:00
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# jrouter
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2024-03-31 09:33:21 +11:00
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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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TashTalk could be a stretch goal, if I can acquire one!
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2024-04-17 09:21:14 +10:00
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## Caveats
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Things I plan to fix Real Soon Now:
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2024-04-17 17:37:50 +10:00
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* ✅ Fixed ~~It currently listens to all AppleTalk and AARP traffic on the EtherTalk port.
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2024-04-17 17:36:36 +10:00
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This might not play well with other AppleTalk software, e.g. netatalk.~~
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2024-04-17 17:37:50 +10:00
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* ✅ Fixed ~~Also it currently uses the default Ethernet address for the interface for
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2024-04-17 17:36:36 +10:00
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sending packets. I plan to add the ability to configure a different address.~~
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You can now configure a different Ethernet address for the EtherTalk
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interface. I haven't tested it with netatalk or tashrouter on the same
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host, but I think using a distinct Ethernet address would help them coexist.
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2024-04-17 09:21:14 +10:00
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* It doesn't do any of the required packet splitting to keep packets under the
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AppleTalk size limits. In particular ZIP GetZoneList Replies are incorrect
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when the zone list would exceed the limit.
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* It logs a lot and has no other monitoring or observability capability. I plan
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to add a Prometheus metrics endpoint and at least add log levels / verbosity
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flag.
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* The AURP implementation is strictly incomplete, and lost connections with
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configured peers aren't re-established after some backoff. This won't be too
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difficult.
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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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2024-03-31 09:33:21 +11:00
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## How to use
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2024-04-15 11:38:30 +10:00
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WARNING: It Barely 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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2024-04-15 11:42:12 +10:00
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sudo apt install libpcap-dev
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2024-04-15 11:38:30 +10:00
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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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