this post was submitted on 02 Apr 2025
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That's not how IP addresses work.
You can fake your IP. There isnt really any authentication at the IP level. Just make a packet and overwite the IP field.
Edit: I was corrected. The TCP handshake requires you to have a valid IP you can respond from. So even though you can fake your IP, you can't use that to talk to most websites.
You need a TCP handshake prior to sending any http payload.
Oh yeah. Forgot about that.