# This configuration file is taken from Debian.
#
# /etc/sysctl.conf - Configuration file for setting system variables
# See sysctl.conf (5) for information.
#

#kernel.domainname = example.com

# Uncomment the following to stop low-level messages on console
kernel.printk = 4 4 1 7

# Reboot X seconds after a kernel panic
kernel.panic = 5

##############################################################3
# Functions previously found in netbase
#

# Uncomment the next two lines to enable Spoof protection (reverse-path filter)
# Turn on Source Address Verification in all interfaces to
# prevent some spoofing attacks
net.ipv4.conf.default.rp_filter=1
net.ipv4.conf.all.rp_filter=1

# Uncomment the next line to enable TCP/IP SYN cookies
#net.ipv4.tcp_syncookies=1

# Uncomment the next line to enable packet forwarding for IPv4
#net.ipv4.ip_forward=1

# Uncomment the next line to enable packet forwarding for IPv6
#net.ipv6.conf.all.forwarding=1


###################################################################
# Additional settings - these settings can improve the network
# security of the host and prevent against some network attacks
# including spoofing attacks and man in the middle attacks through
# redirection. Some network environments, however, require that these
# settings are disabled so review and enable them as needed.
#
# Ignore ICMP broadcasts
#net.ipv4.icmp_echo_ignore_broadcasts = 1
#
# Ignore bogus ICMP errors
#net.ipv4.icmp_ignore_bogus_error_responses = 1
#
# Do not accept ICMP redirects (prevent MITM attacks)
#net.ipv4.conf.all.accept_redirects = 0
#net.ipv6.conf.all.accept_redirects = 0
# _or_
# Accept ICMP redirects only for gateways listed in our default
# gateway list (enabled by default)
# net.ipv4.conf.all.secure_redirects = 1
#
# Do not send ICMP redirects (we are not a router)
#net.ipv4.conf.all.send_redirects = 0
#
# Do not accept IP source route packets (we are not a router)
#net.ipv4.conf.all.accept_source_route = 0
#net.ipv6.conf.all.accept_source_route = 0
#
# Log Martian Packets
#net.ipv4.conf.all.log_martians = 1
#

#kernel.shmmax = 141762560

# Limit local port range
net.ipv4.ip_local_port_range = 49216 61000
net.ipv4.tcp_tw_reuse = 1

# WRL
# set max socket memory ; default was 212992
net.core.rmem_max=425984

# WRS
# The following kernel parameters help alleviate some RabbitMQ
# connection issues. These values need to be set here to ensure sysinv-agent
# remains connected to rabbitmq. Sysinv-agent starts before packstack and the
# long default values allowed the connection to be lost for 2 hours.
# Note the ipv4 vlaues are also applied to ipv6 connections.
net.ipv4.tcp_keepalive_intvl = 1
net.ipv4.tcp_keepalive_probes = 5
net.ipv4.tcp_keepalive_time = 5