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## /etc/sysctl.conf - Configuration file for setting system variables# See /etc/sysctl.d/ for additonal system variables# See sysctl.conf (5) for information.#


#kernel.domainname = example.com


# Uncomment the following to stop low-level messages on console#kernel.printk = 3 4 1 3


##############################################################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# See http://lwn.net/Articles/277146/# Note: This may impact IPv6 TCP sessions too#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#  Enabling this option disables Stateless Address Autoconfiguration#  based on Router Advertisements for this host#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.## 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#net.ipv4.conf.all.rp_filter=1net.ipv4.icmp_echo_ignore_broadcasts=1net.ipv4.conf.default.forwarding=1net.ipv4.conf.default.proxy_arp = 0net.ipv4.ip_forward=1kernel.sysrq = 1net.ipv4.conf.default.send_redirects = 1net.ipv4.conf.all.send_redirects = 0net.ipv4.conf.eth0.proxy_arp=1