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this post was submitted on 05 May 2024
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How can something like Tailscale be blocked?
~~Unfortunately, Deep Packet Inspection does this as Tailscale/Wireguard does not encrypt traffic~~
My bad, it encrypts traffic, but I mean easily readable signature
Wireguard, like all VPNs, definitely does E2E encryption. What would be the point of an unencrypted VPN?
It definitely encrypts the traffic, the problem is that it encrypts the traffic in a recognizable way that DPI can recognize. It's easy for someone snooping on your traffic to tell that you're using Wireguard, but because it's encrypted they can't tell the content of the message.
https://www.wireguard.com/protocol/
Looks like wireguard encrypts traffic to me.
It's easily detected by firewalls in China and Iran.
Interesting, because Tailacale doesn't use any special ports. How would that be detected? And could you maybe use Headscale on a dynamic port to circumvent that?
Wireguard is blocked at protocol level no matter which port you use. Tailsclale uses wireguard. Haven't tried headscale yet.
It's definitely encrypted they can just tell by signature that it is wireguard or whatever and block it.
They could do this with ssh if they felt like it.