Configuration /proc entries

There are many /proc hooks into the kernel that can change your system configuration:

 #/bin/sh

   # Handy dandy functions
   enable () { for file in $@; do echo 1> $file; done }
  disable () { for file in $@; do echo 0> $file; done }

   disable /proc/sys/net/ipv4/conf/*/accept_source_route
   enable  /proc/sys/net/ipv4/tcp_syncookies
   disable /proc/sys/net/ipv4/conf/*/accept_redirects
   enable  /proc/sys/net/ipv4/conf/*/secure_redirects
   disable /proc/sys/net/ipv4/conf/*/send_redirects
   enable  /proc/sys/net/ipv4/conf/*/rp_filter
   enable  /proc/sys/net/ip_always_defrag
   disable /proc/sys/net/ipv4/ip_forward
   enable  /proc/sys/net/ipv4/icmp_echo_ignore_broadcasts
   enable  /proc/sys/net/ipv4/icmp_echo_ignore_all