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The Oracle Linux 6 Security Technical Implementation Guide (V2 R7) has 267 STIG checks. New to STIG checklists? Read What is a STIG checklist?, CKL vs CKLB, and STIG vs SCAP benchmark.
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New to STIG checklists? Read What is a STIG checklist? and CKL vs CKLB.
The status of the "net.ipv4.conf.all.accept_source_route" kernel parameter can be queried by running the following command:
$ sysctl net.ipv4.conf.all.accept_source_route
The output of the command should indicate a value of "0". If this value is not the default value, investigate how it could have been adjusted at runtime, and verify it is not set improperly in "/etc/sysctl.conf".
$ grep net.ipv4.conf.all.accept_source_route /etc/sysctl.conf
If the correct value is not returned, this is a finding.
To set the runtime status of the "net.ipv4.conf.all.accept_source_route" kernel parameter, run the following command:
# sysctl -w net.ipv4.conf.all.accept_source_route=0
If this is not the system's default value, add the following line to "/etc/sysctl.conf":
net.ipv4.conf.all.accept_source_route = 0