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#!/bin/sh #compiled by brent kevin krkosska #ipv4 only echo "1" > /proc/sys/net/ipv4/icmp_echo_ignore_all echo "1" > /proc/sys/net/ipv4/tcp_syncookies for f in /proc/sys/net/ipv4/conf/*/log_martians; do echo "1" > $f; done for f in /proc/sys/net/ipv4/conf/*/rp_filter; do echo "1" > $f; done for f in /proc/sys/net/ipv4/conf/*/accept_source_route; do echo "0" > $f; done for f in /proc/sys/net/ipv4/conf/*/send_redirects; do echo "0" > $f; done for f in /proc/sys/net/ipv4/conf/*/accept_redirects; do echo "0" > $f; done echo 0 > /proc/sys/net/ipv4/tcp_window_scaling echo "1" > /proc/sys/net/ipv4/icmp_echo_ignore_broadcasts echo "60" > /proc/sys/kernel/panic echo "30" > /proc/sys/net/ipv4/tcp_fin_timeout echo "1800" > /proc/sys/net/ipv4/tcp_keepalive_time echo "200" > /proc/sys/net/ipv4/tcp_max_syn_backlog echo 1 > /proc/sys/net/ipv4/icmp_ignore_bogus_error_responses #experimental - be verbose on dynamic ip addresses echo "2" > /proc/sys/net/ipv4/ip_dynaddr
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