Disable iptables Connection Tracking
Very useful if you have countless connections on your server to lower the RAM usage through the tracking that the iptables firewall applies by default. Just execute this with elevated user privileges:
iptables -t raw -A PREROUTING -j NOTRACKWritten by Richard Fussenegger
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A network firewall allows or blocks connections. It cannot tell a legitimate payment script from one that was swapped to copy card data in the browser.
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