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synfinatic / udp-proxy-2020

A crappy UDP router for the year 2020 and beyond
MIT License
103 stars 7 forks source link

Compile version for UDM/UDMP #43

Closed tiehfood closed 3 years ago

tiehfood commented 3 years ago

Could someone help me to compile a version for the UDM/UDMP, would be great. The version for the USG does not work

synfinatic commented 3 years ago

did you try the other Linux version? If that doesn't work, you'll need to tell me more about the hardware in the UDM/UDMP since I don't own one.

tiehfood commented 3 years ago

On both linux versions I get the following error: line 1: syntax error: unexpected word (expecting ")")

result of "uname -a" Linux UDM 4.1.37-v1.8.3.2949-494bdab #1 SMP aarch64 GNU/Linux

tiehfood commented 3 years ago

Great job so far, exactly the tool I was looking for 👍🏼

synfinatic commented 3 years ago

Oh, that's ARM. I know someone has built it on a raspi, but I haven't built a cross-compile tool chain for that yet.

tiehfood commented 3 years ago

Should I then take a look at the "Dockerfile.arm64" file?

synfinatic commented 3 years ago

Yeah, the linux/arm support is there, just not in the last release. Here's a binary

tiehfood commented 3 years ago

Great, thanks! I'll give it a try

tiehfood commented 3 years ago

Works great. I use OpenVPN to connect two subnets with a site-to-site tunnel. Running your tool on both endpoints enables Roon to successfully connect to the devices on the other end 👍.

tiehfood commented 3 years ago

Do you think it's possible to use your tool for redirecting mDNS traffic too?

synfinatic commented 3 years ago

There are existing tools for mDNS like Avahi: https://avahi.org I don't know about the UDM(Pro), but the USG/USG-Pro support that. Sadly Ubiquiti released the UDM series with an extremely limited feature set which is why I run pfSense now at home.

tiehfood commented 3 years ago

Like with Roon the problem with avahi and OpenVPNs tun0 interface is the missing multicast implementation. So I thought maybe your tool could be used to work around this too

synfinatic commented 3 years ago

Maybe? you could definitely tell udp-proxy-2020 to listen on udp/5353 and see what happens. I was under the impression that Avahi did some mDNS protocol decoding & modification, but honestly I've never really looked into how it works. I know under pfSense, the Avahi config lets you pick OpenVPN tunnel interfaces as they do support multicast.

tiehfood commented 3 years ago

With mDNS: "Unable to decode packet from eth0: No decoder for layer type Dot1Q"

synfinatic commented 3 years ago

Oh, looks like you're seeing VLAN tagged frames on the non-tagged native interface. Is it crashing or erroring out? Because if it just ignores it and carries on with life that shouldn't be a problem

That said, probably makes sense to open another ticket and carry on the conversation there if this is something important to you