|| @samykamkar || email me
NAT Slipstreaming allows an attacker to remotely access any TCP/UDP services bound to a victim machine, bypassing the victim's NAT/firewall (arbitrary firewall pinhole control), just by the victim visiting a website. Full writeup here. NAT Slipstreaming PoC code

please run:
echo something here | (nc -vl 3306 || nc -vvlp 3306)

then hit the button below