4 ms·
Even if DNS is redirected, where DNS lookup request goes to next depends on the next hop, which is – for the prevailing majority of the internet users – the ISP
by inkyoto 2y ago
Even if DNS is redirected, where DNS lookup request goes to next depends on the next hop, which is – for the prevailing majority of the internet users – the ISP.
Deep packet inspection hardware appliances have proliferated in their numbers in recent years, they are cheap, the hardware is highly performant, and they are capable of the highly sustained throughput. Redirecting DNS queries in UDP port 53 to any other destination of choice is what they can do without blinking an eye (if they had one). Or dropping / blackholing it.
Only a VPN tunnel can get through, however modern DPI appliances can also scan for VPN and VPN-like signatures in the traffic and drop those, too. The only viable and guaranteed to work solution to resist the tampering with the traffic is a VPN tunnel wrapped into a Shadow Socks tunnel that obfuscates traffic signatures and constantly changes ports it operates on to avoid detection.
- ruthmarx 2y agoDoH is sufficient to mitigate DPI.
- inkyoto 2y agoWidely used DoH servers operate on fixed IP addresses (v4 and v6), connections to which can be dropped / blackholed, which is what people from at least the UK and Malaysia are reporting. DPI is not even required.
- ikt 2y agoCo-incidentally Mullvad recently mentioned they're fighting back https://mullvad.net/en/blog/introducing-defense-against-ai-guided-traffic-analysis-daita https://mullvad.net/en/blog/introducing-defense-against-ai-g...
- DanAtC 2y agoAnd now available for macOS and Linux https://mullvad.net/en/blog/defense-against-ai-guided-traffic-analysis-daita-now-available-on-linux-and-macos https://mullvad.net/en/blog/defense-against-ai-guided-traffi...