• ramble81@lemm.ee
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    6 months ago

    Yeah. Easy to check and get around this. Check your routes before transmitting data, also set up your VPN to push /2s if this relies on /1s, nuke extra routes, etc.

    Novel idea though that most people wouldn’t think to look for, but at the end of the day any system will follow its routing table.

    • Technus@lemmy.zip
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      6 months ago

      also set up your VPN to push /2s if this relies on /1s,

      I don’t think this is a smart way to mitigate this because it could easily result in an arms race. Push /2s, the attacker will switch to /3s; push /4s, the attacker will switch to /5s, etc. Every +1 is going to require doubling the number of routing table entries.

      That can’t continue forever, obviously, but it’s going to result in a negative experience for the user if the VPN client has to push hundreds or thousands of routes to mitigate this attack.