diff options
Diffstat (limited to 'roles/common/tasks/sysctl.yml')
-rw-r--r-- | roles/common/tasks/sysctl.yml | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/roles/common/tasks/sysctl.yml b/roles/common/tasks/sysctl.yml index ffda544..3bf3b4f 100644 --- a/roles/common/tasks/sysctl.yml +++ b/roles/common/tasks/sysctl.yml @@ -1,41 +1,41 @@ - sysctl: name={{ item.name }} value={{ item.value }} sysctl_set=yes with_items: - { name: 'kernel.domainname', value: '{{ ansible_domain }}' } # Networking. See # https://www.kernel.org/doc/Documentation/networking/ip-sysctl.txt # Enable Spoof protection (reverse-path filter). Turn on Source # Address Verification in all interfaces to prevent some spoofing # attacks. - { name: 'net.ipv4.conf.default.rp_filter', value: 1 } - { name: 'net.ipv4.conf.all.rp_filter', value: 1 } # Enable TCP/IP SYN cookies to avoid TCP SYN flood attacks. We # rate-limit not only the default ICMP types 3, 4, 11 and 12 # (0x1818), but also types 0 and 8. See icmp(7). - { name: 'net.ipv4.tcp_syncookies', value: 1 } - { name: 'net.ipv4.icmp_ratemask', value: 6425 } - { name: 'net.ipv4.icmp_ratelimit', value: 1000 } - # Disable paquet forwarding between interfaces (we are not a router). + # Disable packet forwarding between interfaces (we are not a router). - { name: 'net.ipv4.ip_forward', value: 0 } - { name: 'net.ipv6.conf.all.forwarding', value: 0 } # Do not accept ICMP redirects (prevent MITM attacks). - { name: 'net.ipv4.conf.all.accept_redirects', value: 0 } - { name: 'net.ipv6.conf.all.accept_redirects', value: 0 } # Do not send ICMP redirects (we are not a router). - { name: 'net.ipv4.conf.default.send_redirects', value: 0 } - { name: 'net.ipv4.conf.all.send_redirects', value: 0 } # Do not accept IP source route packets (we are not a router). - { name: 'net.ipv4.conf.all.accept_source_route', value: 0 } - { name: 'net.ipv6.conf.all.accept_source_route', value: 0 } # Log Martian Packets. - { name: 'net.ipv4.conf.all.log_martians', value: 1 } # Ignore ICMP broadcasts. - { name: 'net.ipv4.icmp_echo_ignore_broadcasts', value: 1 } |