1 # Kernel sysctl configuration file for Red Hat Linux
  2 #
  3 # For binary values, 0 is disabled, 1 is enabled.  See sysctl(8) and
  4 # sysctl.conf(5) for more details.
  5
  6 # Controls IP packet forwarding
  7 net.ipv4.ip_forward = 0
  8
  9 # Controls source route verification
 10 net.ipv4.conf.default.rp_filter = 1
 11
 12 # Do not accept source routing
 13 net.ipv4.conf.default.accept_source_route = 0
 14
 15 # Controls the System Request debugging functionality of the kernel
 16 kernel.sysrq = 0
 17
 18 # Controls whether core dumps will append the PID to the core filename.
 19 # Useful for debugging multi-threaded applications.
 20 kernel.core_uses_pid = 1
 21
 22 # Controls the use of TCP syncookies
 23 net.ipv4.tcp_syncookies = 1
 24
 25 # Disable netfilter on bridges.
 26 net.bridge.bridge-nf-call-ip6tables = 0
 27 net.bridge.bridge-nf-call-iptables = 0
 28 net.bridge.bridge-nf-call-arptables = 0
 29
 30 fs.file-max=32768
 31
 32 kernel.shmmax=134217728
 33 kernel.shmall=2097152
~