/etc/sysctl.d/
/etc/sysctl.d
NameSizeModeActions
10-console-messages.conf770644editdlrm
10-ipv6-privacy.conf4900644editdlrm
10-kernel-hardening.conf12290644editdlrm
10-magic-sysrq.conf11840644editdlrm
10-network-security.conf1580644editdlrm
10-ptrace.conf12920644editdlrm
10-zeropage.conf5060644editdlrm
99-cloudimg-ipv6.conf1850644editdlrm
99-sysctl.conf23550644editdlrm
README.sysctl7980644editdlrm
Edit: /etc/sysctl.d/10-network-security.conf (158B)
# Turn on Source Address Verification in all interfaces to # prevent some spoofing attacks. net.ipv4.conf.default.rp_filter=2 net.ipv4.conf.all.rp_filter=2