Update README.md regarding secure ICMP redirects

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Raja Grewal 2024-07-18 15:28:31 +10:00
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@ -72,7 +72,8 @@ Various networking components of the TCP/IP stack are hardened for IPv4/6.
from all interfaces to prevent IP spoofing.
- Disable ICMP redirect acceptance and redirect sending messages to
prevent man-in-the-middle attacks and minimize information disclosure.
prevent man-in-the-middle attacks and minimize information disclosure. If
ICMP redirect messages are permitted, only do so from approved gateways.
- Ignore ICMP echo requests to prevent clock fingerprinting and Smurf attacks.