Comment 22 for bug 447197

Here goes.

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

#kernel.domainname = example.com

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

# enable /proc/$pid/maps privacy so that memory relocations are not
# visible to other users. (Added in kernel 2.6.22.)
kernel.maps_protect = 1

# Increase inotify availability
fs.inotify.max_user_watches = 524288

# protect bottom 64k of memory from mmap to prevent NULL-dereference
# attacks against potential future kernel security vulnerabilities.
# (Added in kernel 2.6.23.)
vm.mmap_min_addr = 65536

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

# Comment the next two lines to disable 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
# This disables TCP Window Scaling (http://lkml.org/lkml/2008/2/5/167),
# and is not recommended.
#net.ipv4.tcp_syncookies=1

# Uncomment the next line to enable packet forwarding for IPv4
#net.ipv4.ip_forward=1
# Disables packet forwarding
net.ipv4.ip_forward = 0

# 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
#
# The contents of /proc/<pid>/maps and smaps files are only visible to
# readers that are allowed to ptrace() the process
sys.kernel.maps_protect = 1
# Always defragment packets
net.ipv4.ip_always_defrag = 1
kernel.shmmax = 68157440
kernel.shmall = 68157440

# Disables the magic-sysrq key
kernel.sysrq = 0
# Turn off redirects
net.ipv4.conf.default.send_redirects = 0