Share VPN via Hostpot

[eakteam]

Hi, it would be great if there is any way to share connection from daedalus to other devices via Hostspot

[PeratX]

What is Hostpot?

[eakteam]

When you enable Portable Hotspot (Tethering) to share mobile internet with other devices...
And this app doesn't work with that ... it would be awesome if it can be done

[Rsplwe]

@eakteam Sorry, no root can't do this.

[PeratX]

Btw, it should be hotspot.
Nope, that's impossible right now.
If you want to do that, Daedalus should setup a universal tunnel to filter every packet and intercept DNS packets, not just change DNS to a local address.
This is not difficult, you can try it yourself!

[eakteam]

@PeratX can you please write an example how to achieve this ?

[PeratX]

Sorry, the detailed code is not public right now, however, I can give some steps.

1. listen all address in VPNService
2. Use something like Pcap4J decode every packet
3. Filter DNSPackets(TCP or UDP)
4. Rewrite IPacket and TCP/UDP header to redirect packets
5. When receive a packet from upstream server, rewrite header again

[PeratX]

Maybe this feature will be implement in a separate DNS server. See #105