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Assessment Title
Rule Text
RHEL 10 must prevent Internet Protocol version 4 (IPv4) Internet Control Message Protocol (ICMP) redirect messages from being accepted.
Description
Discussion Text
ICMP redirect messages are used by routers to inform hosts that a more direct route exists for a particular destination. These messages modify the host's route table and are unauthenticated. An illicit ICMP redirect message could result in a man-in-the-middle attack.
This feature of the IPv4 protocol has few legitimate uses. It must be disabled unless absolutely required.
Satisfies: SRG-OS-000420-GPOS-00186, SRG-OS-000142-GPOS-00077
This feature of the IPv4 protocol has few legitimate uses. It must be disabled unless absolutely required.
Satisfies: SRG-OS-000420-GPOS-00186, SRG-OS-000142-GPOS-00077
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