diff options
Diffstat (limited to 'os_config/roles/network')
| -rw-r--r-- | os_config/roles/network/files/rules.v6 | 12 | ||||
| -rw-r--r-- | os_config/roles/network/tasks/main.yml | 11 | ||||
| -rw-r--r-- | os_config/roles/network/templates/rules.v4.j2 | 36 |
3 files changed, 59 insertions, 0 deletions
diff --git a/os_config/roles/network/files/rules.v6 b/os_config/roles/network/files/rules.v6 new file mode 100644 index 0000000..17ff71c --- /dev/null +++ b/os_config/roles/network/files/rules.v6 @@ -0,0 +1,12 @@ +# WARNING!! When rules.{v4,v6} are changed, the whole iptables configuration is reloaded. +# This creates issues with Docker, which injects its own configuration in iptables when it starts. +# In practice, most (all?) containers will break if rules.{v4,v6} are changed, +# and docker will have to be restared. + + +*filter +:INPUT DROP [0:0] +:FORWARD DROP [0:0] +:OUTPUT ACCEPT [0:0] +COMMIT + diff --git a/os_config/roles/network/tasks/main.yml b/os_config/roles/network/tasks/main.yml new file mode 100644 index 0000000..1443e0c --- /dev/null +++ b/os_config/roles/network/tasks/main.yml @@ -0,0 +1,11 @@ +- name: "Deploy iptablesv4 configuration" + template: src=rules.v4.j2 dest=/etc/iptables/rules.v4 + +- name: "Deploy iptablesv6 configuration" + copy: src=rules.v6 dest=/etc/iptables/rules.v6 + +- name: "Activate IP forwarding" + sysctl: + name: net.ipv4.ip_forward + value: "1" + sysctl_set: yes diff --git a/os_config/roles/network/templates/rules.v4.j2 b/os_config/roles/network/templates/rules.v4.j2 new file mode 100644 index 0000000..a446139 --- /dev/null +++ b/os_config/roles/network/templates/rules.v4.j2 @@ -0,0 +1,36 @@ +*filter +:INPUT DROP [0:0] +:FORWARD DROP [0:0] +:OUTPUT ACCEPT [0:0] + +# Administration +-A INPUT -p tcp --dport 22 -j ACCEPT + +# Cluster +-A INPUT -s 192.168.1.254 -j ACCEPT +-A INPUT -s 82.253.205.190 -j ACCEPT +{% for selected_host in groups['cluster_nodes'] %} +-A INPUT -s {{ hostvars[selected_host]['public_ip'] }} -j ACCEPT +-A INPUT -s {{ hostvars[selected_host]['private_ip'] }} -j ACCEPT +{% endfor %} + +# Local +-A INPUT -i docker0 -j ACCEPT +-A INPUT -s 127.0.0.1/8 -j ACCEPT +-A INPUT -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT +COMMIT + +*nat +:PREROUTING ACCEPT [0:0] +:INPUT ACCEPT [0:0] +:OUTPUT ACCEPT [0:0] +:POSTROUTING ACCEPT [0:0] +COMMIT + +*mangle +:PREROUTING ACCEPT [0:0] +:INPUT ACCEPT [0:0] +:FORWARD ACCEPT [0:0] +:OUTPUT ACCEPT [0:0] +:POSTROUTING ACCEPT [0:0] +COMMIT |