Disable ICMP Redirects

^{on Aug. 6, 2015, 9:05 p.m.}

echo 'net.ipv4.conf.all.send_redirects=0' >> /etc/sysctl.conf
echo 'net.ipv4.conf.all.secure_redirects=0' >> /etc/sysctl.conf
echo 'net.ipv4.conf.all.accept_redirects=0' >> /etc/sysctl.conf
echo 'net.ipv6.conf.all.accept_redirects=0' >> /etc/sysctl.conf
sysctl -p