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main.yml
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---
# .. vim: foldmarker=[[[,]]]:foldmethod=marker
#
# ipr-cnrs.nftables default variables
# ===================================
# Packages and installation [[[
# -----------------------------
# .. envvar:: nft_enabled [[[
#
# Enable or disable support for Nftables on a given host. Disabling this
# option does not remove existing installation and configuration.
#
nft_enabled: true
# ]]]
# .. envvar:: nft_pkg_state [[[
#
# What is the desired state for Nftables packages ? Possible options :
#
# ``present``
# Default. Nftables packages will be installed.
#
# ``absent``
# Ensure to remove Nftables related packages.
nft_pkg_state: 'present'
# ]]]
# .. envvar:: nft_update_repositories [[[
#
# Enable or disable updating of repositories on a given host. Disabling this
# option enables using this role on hosts with limited outgoing connections.
#
nft_update_repositories: true
# ]]]
# .. envvar:: nft_old_pkg_list [[[
#
# List of old Iptables packages to remove to avoid duplicate firewall.
#
nft_old_pkg_list:
- 'iptables'
- 'libiptc0'
# ]]]
# .. envvar:: nft_old_pkg_state [[[
#
# What is the desired state for Iptables packages ? Possible options :
#
# ``absent``
# Default. Ensure to remove Iptables related packages.
#
# ``present``
# Iptables packages will be kept.
nft_old_pkg_state: 'absent'
# ]]]
# .. envvar:: nft_old_pkg_manage [[[
#
# If the old Iptables packages should be managed ? Possible options :
#
# ``true``
# Default. Ensure to apply the required state for Iptables related packages.
#
# ``false``
# Iptables packages will not be touched.
nft_old_pkg_manage: true
# ]]]
# ]]]
# Nftables global rules [[[
# -------------------------
# .. envvar:: nft_global_default_rules [[[
#
# List of global rules (applied on all tables) to configure for all hosts
# inherited from this role.
nft_global_default_rules:
005 established: "{{ nft_templates.allow_established }}"
006 invalid: "{{ nft_templates.drop_invalid_log_no_rst }}"
# ]]]
# .. envvar:: nft_global_rules [[[
#
# List of global rules (applied on all tables) to configure for all hosts
# in the Ansible inventory.
nft_global_rules: {}
# ]]]
# .. envvar:: nft_merged_groups [[[
#
# Enable or disable the ability to merge multiple firewall group variables
nft_merged_groups: false
# ]]]
# .. envvar:: nft_merged_groups_dir [[[
#
# The directory to read the group firewall rules from.
# Relative to the playbook directory.
nft_merged_groups_dir: vars/
# ]]]
# .. envvar:: nft_global_group_rules [[[
#
# List of global rules (applied on all tables) to configure for hosts in
# specific Ansible inventory group.
nft_global_group_rules: {}
# ]]]
# .. envvar:: nft_global_host_rules [[[
#
# List of global rules (applied on all tables) to configure for specific hosts
# in the Ansible inventory.
nft_global_host_rules: {}
# ]]]
# .. envvar:: nft__custom_content [[[
#
# Custom content (tables, include,…) to add in Nftables configuration.
nft__custom_content: ''
# ]]]
# .. envvar:: nft_custom_includes [[[
#
# Custom includes to add into the main Nftables filter configuration.
nft_custom_includes: ''
# ]]]
# .. envvar:: nft_conf_dir_path [[[
#
# Path to the sub directory for Nftables configuration files.
#
# Should be an absolut path and this var will be used in all *_path vars.
nft_conf_dir_path: '/etc/nftables.d'
# ]]]
# .. envvar:: nft_main_conf_path [[[
#
# Path to the main configuration file called by the Systemd Nftables service.
#
# Should be an absolut path.
nft_main_conf_path: '/etc/nftables.conf'
# ]]]
# .. envvar:: nft_main_conf_content [[[
#
# Template used to provide the previous main configuration file.
#
# Must be a relative path from default/ directory of this role or from your
# Ansible inventory directory.
nft_main_conf_content: 'etc/nftables.conf.j2'
# ]]]
# ]]]
# Nftables vars definition [[[
# ----------------------------
#
# These lists allow to define some vars that can be used in nftables rules.
# See the official Nftables wiki page for more informations and examples :
# https://wiki.nftables.org/wiki-nftables/index.php/Scripting#Defining_variables
# .. envvar:: nft_define_default [[[
#
# List of vars definition to configure for all hosts inherited from this role.
nft_define_default:
broadcast and multicast:
desc: 'broadcast and multicast'
name: badcast_addr
value: '{ 255.255.255.255, 224.0.0.1, 224.0.0.251 }'
ip6 broadcast and multicast:
desc: 'broadcast and multicast'
name: ip6_badcast_addr
value: '{ ff02::16 }'
input tcp accepted:
name: in_tcp_accept
value: '{ ssh }'
output tcp accepted:
name: out_tcp_accept
value: '{ http, https, hkp }'
output udp accepted:
name: out_udp_accept
value: '{ bootps, domain, ntp }'
# ]]]
# .. envvar:: nft_define [[[
#
# List of vars definition to configure for all hosts in the Ansible inventory.
nft_define: {}
# ]]]
# .. envvar:: nft_define_group [[[
#
# List of vars definition to configure for hosts in specific
# Ansible inventory group.
nft_define_group: {}
# ]]]
# .. envvar:: nft_define_host [[[
#
# List of vars definition to configure for specific hosts
# in the Ansible inventory.
nft_define_host: {}
# ]]]
# .. envvar:: nft_define_conf_path [[[
#
# Path to the defined vars file to include in the main configuration file
# in order to use the previous defined lists.
#
# Should include the '{{ nft_conf_dir_path }}' var or be an absolut path.
nft_define_conf_path: '{{ nft_conf_dir_path }}/defines.nft'
# ]]]
# .. envvar:: nft_define_conf_content [[[
#
# Template used to provide the previous defined vars file.
#
# Must be a relative path from default/ directory of this role or from your
# Ansible inventory directory.
nft_define_conf_content: 'etc/nftables.d/defines.nft.j2'
# ]]]
# ]]]
# Nftables sets definition [[[
# ----------------------------
#
# These "set" lists allow to define sets that can be used in Nftables rules.
# See the official Nftables wiki page for more informations and examples :
# https://wiki.nftables.org/wiki-nftables/index.php/Sets
# .. envvar:: nft_define_default [[[
#
# List of sets to configure for all hosts inherited from this role.
nft_set_default:
blackhole:
- type ipv4_addr;
- elements = $badcast_addr
ip6blackhole:
- type ipv6_addr;
- elements = $ip6_badcast_addr
in_tcp_accept:
- type inet_service; flags interval;
- elements = $in_tcp_accept
out_tcp_accept:
- type inet_service; flags interval;
- elements = $out_tcp_accept
out_udp_accept:
- type inet_service; flags interval;
- elements = $out_udp_accept
# ]]]
# .. envvar:: nft_set [[[
#
# List of sets to configure for all hosts in the Ansible inventory.
nft_set: {}
# ]]]
# .. envvar:: nft_set_group [[[
#
# List of sets to configure for hosts in specific Ansible inventory group.
nft_set_group: {}
# ]]]
# .. envvar:: nft_set_host [[[
#
# List of sets to configure for specific hosts in the Ansible inventory.
nft_set_host: {}
# ]]]
# .. envvar:: nft_set_conf_path [[[
#
# Path to the "sets" file to include in the main configuration file
# in order to use the previous defined lists.
#
# Should include the '{{ nft_conf_dir_path }}' var or be an absolut path.
nft_set_conf_path: '{{ nft_conf_dir_path }}/sets.nft'
# ]]]
# .. envvar:: nft_set_conf_content [[[
#
# Template used to provide the previous "sets" file.
#
# Must be a relative path from default/ directory of this role or from your
# Ansible inventory directory.
nft_set_conf_content: 'etc/nftables.d/sets.nft.j2'
# ]]]
# ]]]
# inet filter table rules [[[
# ---------------------------
#
# All these rules will be set up in an inet table in order to filter the
# input and output traffic.
# .. envvar:: nft_input_default_rules [[[
#
# List of input rules to configure for all hosts inherited from this role.
nft_input_default_rules:
000 policy:
- type filter hook input priority 0; policy drop;
001 global:
- jump global
002 localhost: "{{ nft_templates.allow_in_localhost }}"
011 dhcp4: "{{ nft_templates.allow_in_dhcp4 }}"
012 dhcp6: "{{ nft_templates.allow_in_dhcp6 }}"
010 drop unwanted:
- ip daddr @blackhole counter drop
011 drop unwanted ipv6:
- ip6 daddr @ip6blackhole counter drop
013 icmpv6: "{{ nft_templates.icmpv6_in_must_allow }}"
014 icmp: "{{ nft_templates.icmp_in_must_allow }}"
015 ipv4 deprecated: "{{ nft_templates.ip_drop_deprecated }}"
016 ipv6 deprecated: "{{ nft_templates.ip6_drop_deprecated }}"
210 input tcp accepted:
- tcp dport @in_tcp_accept ct state new accept
900 log:
- counter log prefix "IN "
# ]]]
# .. envvar:: nft_input_rules [[[
#
# List of input rules to configure for all hosts in the Ansible inventory.
nft_input_rules: {}
# ]]]
# .. envvar:: nft_input_group_rules [[[
#
# List of input rules to configure for hosts in specific Ansible inventory group.
nft_input_group_rules: {}
# ]]]
# .. envvar:: nft_input_host_rules [[[
#
# List of input rules to configure for specific hosts in the Ansible inventory.
nft_input_host_rules: {}
# ]]]
# .. envvar:: nft_input_conf_path [[[
#
# Path to the input rules file for the filter table to include in the main
# configuration file in order to use the previous defined lists.
#
# Should include the '{{ nft_conf_dir_path }}' var or be an absolut path.
nft_input_conf_path: '{{ nft_conf_dir_path }}/filter-input.nft'
# ]]]
# .. envvar:: nft_input_conf_content [[[
#
# Template used to provide the previous input rules file.
#
# Must be a relative path from default/ directory of this role or from your
# Ansible inventory directory.
nft_input_conf_content: 'etc/nftables.d/filter-input.nft.j2'
# ]]]
# .. envvar:: nft_output_default_rules [[[
#
# List of output rules to configure for all hosts inherited from this role.
nft_output_default_rules:
000 policy:
- type filter hook output priority 0; policy drop;
005 global:
- jump global
006 localhost: "{{ nft_templates.allow_out_localhost }}"
007 icmpv6: "{{ nft_templates.icmpv6_in_must_allow }}"
008 icmp: "{{ nft_templates.icmp_in_must_allow }}"
009 ping6: "{{ nft_templates.icmpv6_allow_ping }}"
010 ping: "{{ nft_templates.icmp_allow_ping }}"
011 dhcp4: "{{ nft_templates.allow_out_dhcp4 }}"
012 dhcp6: "{{ nft_templates.allow_out_dhcp6 }}"
013 mdns: "{{ nft_templates.allow_mdns }}"
013 upnp: "{{ nft_templates.allow_upnp }}"
200 output udp accepted:
- udp dport @out_udp_accept ct state new accept
210 output tcp accepted:
- tcp dport @out_tcp_accept ct state new accept
250 reset ssh: "{{ nft_templates.allow_rst }}"
# ]]]
# .. envvar:: nft_output_rules [[[
#
# List of output rules to configure for all hosts in the Ansible inventory.
nft_output_rules: {}
# ]]]
# .. envvar:: nft_output_group_rules [[[
#
# List of output rules to configure for hosts in specific Ansible inventory group.
nft_output_group_rules: {}
# ]]]
# .. envvar:: nft_output_host_rules [[[
#
# List of output rules to configure for specific hosts in the Ansible inventory.
nft_output_host_rules: {}
# ]]]
# .. envvar:: nft_output_conf_path [[[
#
# Path to the output rules file for the filter table to include in the main
# configuration file in order to use the previous defined lists.
#
# Should include the '{{ nft_conf_dir_path }}' var or be an absolut path.
nft_output_conf_path: '{{ nft_conf_dir_path }}/filter-output.nft'
# ]]]
# .. envvar:: nft_output_conf_content [[[
#
# Template used to provide the previous output rules file.
#
# Must be a relative path from default/ directory of this role or from your
# Ansible inventory directory.
nft_output_conf_content: 'etc/nftables.d/filter-output.nft.j2'
# ]]]
# .. envvar:: nft__forward_table_manage [[[
#
# If the forward table should be managed ? Possible options are :
#
# ``False``
# Default. The forward table is not managed and rules will not be added.
#
# ``True``
# Add the forwarding rules that follow.
nft__forward_table_manage: false
# ]]]
# .. envvar:: nft_forward_default_rules [[[
#
# List of forward rules to configure for all hosts inherited from this role.
nft_forward_default_rules:
000 policy:
- type filter hook forward priority 0; policy drop;
001 global:
- jump global
002 icmp: "{{ nft_templates.icmp_fwd_must_allow }}"
003 icmpv6: "{{ nft_templates.icmpv6_fwd_must_allow }}"
900 log:
- counter log prefix "FWD "
# ]]]
# .. envvar:: nft_forward_rules [[[
#
# List of forward rules to configure for all hosts in the Ansible inventory.
nft_forward_rules: {}
# ]]]
# .. envvar:: nft_forward_group_rules [[[
#
# List of forward rules to configure for hosts in specific Ansible inventory group.
nft_forward_group_rules: {}
# ]]]
# .. envvar:: nft_forward_host_rules [[[
#
# List of forward rules to configure for specific hosts in the Ansible inventory.
nft_forward_host_rules: {}
# ]]]
# .. envvar:: nft_forward_conf_path [[[
#
# Path to the forward rules file for the filter table to include in the main
# configuration file in order to use the previous defined lists.
#
# Should include the '{{ nft_conf_dir_path }}' var or be an absolut path.
nft_forward_conf_path: '{{ nft_conf_dir_path }}/filter-forward.nft'
# ]]]
# .. envvar:: nft_forward_conf_content [[[
#
# Template used to provide the previous forward rules file.
#
# Must be a relative path from default/ directory of this role or from your
# Ansible inventory directory.
nft_forward_conf_content: 'etc/nftables.d/filter-forward.nft.j2'
# ]]]
# ]]]
# ip nat table rules [[[
# ---------------------------
#
# All these rules will be set up in an ip table in order to perform some
# Network Address Translation (NAT).
# .. envvar:: nft__nat_table_manage [[[
#
# If the nat table should be managed ? Possible options are :
#
# ``False``
# Default. The nat table is not managed and rules will not be added.
#
# ``True``
# Add the pre and postrouting rules that follow.
nft__nat_table_manage: False
# ]]]
# .. envvar:: nft__nat_default_prerouting_rules [[[
#
# List of prerouting rules to configure for all hosts inherited from this role.
nft__nat_default_prerouting_rules:
000 policy:
- type nat hook prerouting priority 0;
# ]]]
# .. envvar:: nft__nat_prerouting_rules [[[
#
# List of prerouting rules to configure for all hosts in the Ansible inventory.
nft__nat_prerouting_rules: {}
# ]]]
# .. envvar:: nft__nat_group_prerouting_rules [[[
#
# List of prerouting rules to configure for hosts in specific
# Ansible inventory group.
nft__nat_group_prerouting_rules: {}
# ]]]
# .. envvar:: nft__nat_host_prerouting_rules [[[
#
# List of prerouting rules to configure for specific hosts
# in the Ansible inventory.
nft__nat_host_prerouting_rules: {}
# ]]]
# .. envvar:: nft__nat_prerouting_conf_path [[[
#
# Path to the prerouting rules file for the nat table to include in the main
# configuration file in order to use the previous defined lists.
#
# Should include the '{{ nft_conf_dir_path }}' var or be an absolut path.
nft__nat_prerouting_conf_path: '{{ nft_conf_dir_path }}/nat-prerouting.nft'
# ]]]
# .. envvar:: nft__nat_prerouting_conf_content [[[
#
# Template used to provide the previous prerouting rules file.
#
# Must be a relative path from default/ directory of this role or from your
# Ansible inventory directory.
nft__nat_prerouting_conf_content: 'etc/nftables.d/nat-prerouting.nft.j2'
# ]]]
# .. envvar:: nft__nat_default_postrouting_rules [[[
#
# List of postrouting rules to configure for all hosts inherited from this role.
nft__nat_default_postrouting_rules:
000 policy:
- type nat hook postrouting priority 100;
# ]]]
# .. envvar:: nft__nat_postrouting_rules [[[
#
# List of postrouting rules to configure for all hosts in the Ansible inventory.
nft__nat_postrouting_rules: {}
# ]]]
# .. envvar:: nft__nat_group_postrouting_rules [[[
#
# List of postrouting rules to configure for hosts in specific
# Ansible inventory group.
nft__nat_group_postrouting_rules: {}
# ]]]
# .. envvar:: nft__nat_host_postrouting_rules [[[
#
# List of postrouting rules to configure for specific hosts
# in the Ansible inventory.
nft__nat_host_postrouting_rules: {}
# ]]]
# .. envvar:: nft__nat_postrouting_conf_path [[[
#
# Path to the postrouting rules file for the nat table to include in the main
# configuration file in order to use the previous defined lists.
#
# Should include the '{{ nft_conf_dir_path }}' var or be an absolut path.
nft__nat_postrouting_conf_path: '{{ nft_conf_dir_path }}/nat-postrouting.nft'
# ]]]
# .. envvar:: nft__nat_postrouting_conf_content [[[
#
# Template used to provide the previous postrouting rules file.
#
# Must be a relative path from default/ directory of this role or from your
# Ansible inventory directory.
nft__nat_postrouting_conf_content: 'etc/nftables.d/nat-postrouting.nft.j2'
# ]]]
# ]]]
# Service management [[[
# ----------------------
# .. envvar:: nft_service_manage [[[
#
# If the Nftables service should be managed ? Possible options are :
#
# ``True``
# Default. The service is started.
#
# ``False``
# The service will not be touched.
nft_service_manage: true
# ]]]
# .. envvar:: nft_service_name [[[
#
# The service name to manage.
nft_service_name: 'nftables'
# ]]]
# .. envvar:: nft_service_enabled [[[
#
# If the Nftables service should be enabled at startup ? Possible options are :
#
# ``True``
# Default. The service is enabled.
#
# ``False``
# The service is disabled from startup.
nft_service_enabled: true
# ]]]
# .. envvar:: nft_service_unit_from_role [[[
#
# Should the role supply a custom nftables.service unit file?
# Or use the distribution provided one?
#
# ``true``
# Default. Install our service unit, written to 'nft_service_unit_path'.
#
# ``false``
# No service unit will be added. Use distribution provided nftables.service.
nft_service_unit_from_role: true
# ]]]
# .. envvar:: nft_service_unit_path [[[
#
# Path to store Nftables service.
nft_service_unit_path: '/etc/systemd/system/nftables.service'
# ]]]
# .. envvar:: nft_service_unit_content [[[
#
# Template used to provide systemd unit for Nftables service.
nft_service_unit_content: 'etc/systemd/system/nftables.service.j2'
# ]]]
# .. envvar:: nft__service_override_path [[[
#
# Path to store Nftables custom conf.
nft__service_override_path: '/etc/systemd/system/nftables.service.d/override.conf'
# ]]]
# .. envvar:: nft__service_override_content [[[
#
# Template used to provide systemd custom conf for Nftables service.
nft__service_override_content: 'etc/systemd/system/nftables.service.d/override.conf.j2'
# ]]]
# .. envvar:: nft__service_protect [[[
#
# If the systemd unit should have the Protect directives ? Possible options :
#
# ``True``
# Default. Directives will be set (ProtectSystem, ProtectHome,…).
#
# ``False``
# The directives will be ignored.
nft__service_protect: true
# ]]]
# .. envvar:: nft_fail2ban_service_override [[[
#
# Should the systemd unit override file for fail2ban.service be added?
# Options:
# ``True``:
# Default. The fail2ban override file should be present, at path 'nft__fail2ban_service_unit_path'.
#
# ``False``:
# Skip the tasks that put the fail2ban override file into place.
nft_fail2ban_service_override: true
# ]]]
# .. envvar:: nft__fail2ban_service_unit_path [[[
#
# Path to store Fail2Ban custom conf.
nft__fail2ban_service_unit_path: '/etc/systemd/system/fail2ban.service.d/override.conf'
# ]]]
# .. envvar:: nft__fail2ban_service_unit_content [[[
#
# Template used to provide systemd custom conf for Fail2Ban service.
nft__fail2ban_service_unit_content: 'etc/systemd/system/fail2ban.service.d/override.conf.j2'
# ]]]
#
# .. envvar:: nft_debug [[[
#
# Toggle on/off more verbose output. Possible options are:
#
# ''Flase''
# Default. No additional output will be given.
#
# ''True''
# More verbose output.
nft_debug: False
# .. envvar:: nft_backup_conf [[[
#
# If the nftables config files should be backuped when changed ?
# Possible options are:
#
# ``True``
# Default. Backup all nftables config files inside the nftables directory.
#
# ``False``
# Configs will not be backuped.
nft_backup_conf: True
# ]]]
# ]]]
# ]]]
# OS specific variables defaults [[[
# ----------------------------------
# .. envvar:: nft__bin_location [[[
#
# Specify Nftables executable location.
#
nft__bin_location: '/usr/sbin/nft'
# ]]]
# ]]]
# .. envvar:: nft_templates: [[[
#
# Frequently used nft rule collections.
nft_templates:
drop_invalid_log_no_rst:
- ct state invalid tcp flags != rst log prefix "DROP INVALID "
- ct state invalid counter drop
allow_established:
- ct state established,related counter accept
allow_in_localhost:
- iif lo accept
allow_out_localhost:
- oif lo accept
allow_rst:
- tcp flags { rst, psh | ack } counter accept
allow_mdns:
- meta l4proto udp ip6 daddr ff02::fb udp dport mdns counter accept comment "mDNS IPv6 service discovery"
- meta l4proto udp ip daddr 224.0.0.251 udp dport mdns counter accept comment "mDNS IPv4 service discovery"
allow_in_dhcp4:
- meta l4proto udp udp sport bootps udp dport bootpc counter accept comment "DHCPv4"
allow_in_dhcp6:
- meta l4proto udp ip6 saddr fe80::/10 ip6 daddr fe80::/10 udp sport dhcpv6-server udp dport dhcpv6-client counter accept comment "DHCPv6"
allow_out_dhcp4:
- meta l4proto udp udp dport bootps udp sport bootpc counter accept comment "DHCPv4"
allow_out_dhcp6:
- meta l4proto udp ip6 saddr fe80::/10 ip6 daddr fe80::/10 udp dport dhcpv6-server udp sport dhcpv6-client counter accept comment "DHCPv6"
allow_upnp:
- meta l4proto udp ip daddr 239.255.255.250 udp dport 1900 counter accept comment "Multicast UPnP"
icmp_in_must_allow:
- meta l4proto icmp icmp type { destination-unreachable, time-exceeded, parameter-problem } counter accept
icmp_allow_ping:
- meta l4proto icmp icmp type { echo-request, echo-reply } counter accept
icmp_fwd_must_allow:
- meta l4proto icmp icmp type { destination-unreachable, time-exceeded, parameter-problem } counter accept
icmpv6_fwd_must_allow:
# RFC 4890, 4.3.1. Traffic That Must Not Be Dropped
- meta l4proto ipv6-icmp icmpv6 type destination-unreachable counter accept
- meta l4proto ipv6-icmp icmpv6 type packet-too-big counter accept
- meta l4proto ipv6-icmp icmpv6 type time-exceeded icmpv6 code 0 counter accept
- meta l4proto ipv6-icmp icmpv6 type parameter-problem icmpv6 code { 1, 2 } counter accept
icmpv6_in_must_allow:
# RFC 4890, 4.4.1. Traffic That Must Not Be Dropped
- meta l4proto ipv6-icmp icmpv6 type destination-unreachable counter accept
- meta l4proto ipv6-icmp icmpv6 type packet-too-big counter accept
- meta l4proto ipv6-icmp icmpv6 type time-exceeded icmpv6 code 0 counter accept
- meta l4proto ipv6-icmp icmpv6 type parameter-problem icmpv6 code { 1, 2 } counter accept
- meta l4proto ipv6-icmp icmpv6 type nd-router-solicit counter accept
- meta l4proto ipv6-icmp icmpv6 type nd-router-advert counter accept
- meta l4proto ipv6-icmp icmpv6 type nd-neighbor-solicit counter accept
- meta l4proto ipv6-icmp icmpv6 type nd-neighbor-advert counter accept
- meta l4proto ipv6-icmp icmpv6 type ind-neighbor-solicit counter accept
- meta l4proto ipv6-icmp icmpv6 type ind-neighbor-solicit counter accept
- meta l4proto ipv6-icmp ip6 saddr fe80::/10 icmpv6 type mld-listener-query counter accept
- meta l4proto ipv6-icmp ip6 saddr fe80::/10 icmpv6 type mld-listener-report counter accept
- meta l4proto ipv6-icmp ip6 saddr fe80::/10 icmpv6 type mld-listener-reduction counter accept
- meta l4proto ipv6-icmp ip6 saddr fe80::/10 icmpv6 type mld2-listener-report counter accept
- meta l4proto ipv6-icmp icmpv6 type 148 counter accept comment "Certification Path Solicitation (SEND)"
- meta l4proto ipv6-icmp icmpv6 type 149 counter accept comment "Certification Path Advertisement (SEND)"
- meta l4proto ipv6-icmp ip6 saddr fe80::/10 icmpv6 type 151 counter accept comment "Multicast Router Advertisement (MRD)"
- meta l4proto ipv6-icmp ip6 saddr fe80::/10 icmpv6 type 152 counter accept comment "Multicast Router Solicitation (MRD)"
- meta l4proto ipv6-icmp ip6 saddr fe80::/10 icmpv6 type 153 counter accept comment "Multicast Router Termination (MRD)"
icmpv6_in_should_allow:
# RFC 4890, 4.3.2. Traffic That Normally Should Not Be Dropped
- meta l4proto ipv6-icmp icmpv6 type time-exceeded icmpv6 code 1 counter accept
- meta l4proto ipv6-icmp icmpv6 type parameter-problem icmpv6 code 0 counter accept
icmpv6_in_allow_mobip:
# RFC 4890, 4.3.2. Traffic That Normally Should Not Be Dropped
- meta l4proto ipv6-icmp icmpv6 type 144 counter accept comment "Home Agent Address Discovery Request Message"
- meta l4proto ipv6-icmp icmpv6 type 145 counter accept comment "Home Agent Address Discovery Reply Message"
- meta l4proto ipv6-icmp icmpv6 type 146 counter accept comment "Mobile Prefix Solicitation"
- meta l4proto ipv6-icmp icmpv6 type 147 counter accept comment "Mobile Prefix Advertisement"
icmpv6_in_allow_dropped_anyway:
# RFC 4890, 4.4.3. Traffic That Will Be Dropped Anyway -- No Special Attention Needed
- meta l4proto ipv6-icmp icmpv6 type router-renumbering counter accept
- meta l4proto ipv6-icmp icmpv6 type 150 counter drop comment "Seamoby Experimental"
icmpv6_in_allow_redirect:
# RFC 4890, 4.4.4. Traffic for Which a Policy Should Be Defined
- meta l4proto ipv6-icmp icmpv6 type nd-redirect counter accept
icmpv6_in_drop_redirect:
# RFC 4890, 4.4.4. Traffic for Which a Policy Should Be Defined
- meta l4proto ipv6-icmp icmpv6 type nd-redirect counter drop
icmpv6_in_allow_nodeinfo:
# RFC 4890, 4.4.4. Traffic for Which a Policy Should Be Defined
- meta l4proto ipv6-icmp icmpv6 type 139 counter accept comment "Node Information Query"
- meta l4proto ipv6-icmp icmpv6 type 140 counter accept comment "Node Information Response"
icmpv6_in_drop_nodeinfo:
# RFC 4890, 4.4.4. Traffic for Which a Policy Should Be Defined
- meta l4proto ipv6-icmp icmpv6 type 139 counter drop comment "Node Information Query"
- meta l4proto ipv6-icmp icmpv6 type 140 counter drop comment "Node Information Response"
icmpv6_in_allow_unallocated:
# RFC 4890, 4.4.4. Traffic for Which a Policy Should Be Defined
- meta l4proto ipv6-icmp icmpv6 type 5-99 counter accept comment "Unallocated error ICMPv6"
- meta l4proto ipv6-icmp icmpv6 type 102-126 counter accept comment "Unallocated error ICMPv6"
icmpv6_in_drop_unallocated:
# RFC 4890, 4.4.4. Traffic for Which a Policy Should Be Defined
- meta l4proto ipv6-icmp icmpv6 type 5-99 counter drop comment "Unallocated error ICMPv6"
- meta l4proto ipv6-icmp icmpv6 type 102-126 counter drop comment "Unallocated error ICMPv6"
icmpv6_in_drop_dangerous:
# RFC 4890, 4.4.5. Traffic That Should Be Dropped Unless a Good Case Can Be Made
- meta l4proto ipv6-icmp icmpv6 type { 100, 101, 200, 201 } counter drop comment "Experimental ICMPv6 allocations"
- meta l4proto ipv6-icmp icmpv6 type { 127, 255 } counter drop comment "ICMPv6 extension numbers"
- meta l4proto ipv6-icmp icmpv6 type 154-199 counter drop comment "Unallocated informational ICMPv6"
- meta l4proto ipv6-icmp icmpv6 type 202-254 counter drop comment "Unallocated informational ICMPv6"
icmpv6_allow_ping:
- meta l4proto ipv6-icmp icmpv6 type { echo-request, echo-reply } counter accept
icmpv6_fwd_should_allow:
# RFC 4890, 4.3.2. Traffic That Normally Should Not Be Dropped
- meta l4proto ipv6-icmp icmpv6 type time-exceeded icmpv6 code 1 counter accept
- meta l4proto ipv6-icmp icmpv6 type parameter-problem icmpv6 code 0 counter accept
icmpv6_fwd_allow_mobip:
# RFC 4890, 4.3.2. Traffic That Normally Should Not Be Dropped
- meta l4proto ipv6-icmp icmpv6 type 144 counter accept comment "Home Agent Address Discovery Request Message"
- meta l4proto ipv6-icmp icmpv6 type 145 counter accept comment "Home Agent Address Discovery Reply Message"
- meta l4proto ipv6-icmp icmpv6 type 146 counter accept comment "Mobile Prefix Solicitation"
- meta l4proto ipv6-icmp icmpv6 type 147 counter accept comment "Mobile Prefix Advertisement"
icmpv6_fwd_allow_dropped_anyway:
# RFC 4890, 4.3.3. Traffic That Will Be Dropped Anyway
- meta l4proto ipv6-icmp icmpv6 type nd-router-solicit ip6 hoplimit 255 counter accept
- meta l4proto ipv6-icmp icmpv6 type nd-router-advert ip6 hoplimit 255 counter accept
- meta l4proto ipv6-icmp icmpv6 type nd-neighbor-solicit ip6 hoplimit 255 counter accept
- meta l4proto ipv6-icmp icmpv6 type nd-neighbor-advert ip6 hoplimit 255 counter accept
- meta l4proto ipv6-icmp icmpv6 type nd-redirect ip6 hoplimit 255 counter accept
- meta l4proto ipv6-icmp icmpv6 type ind-neighbor-solicit ip6 hoplimit 255 counter accept
- meta l4proto ipv6-icmp icmpv6 type ind-neighbor-solicit ip6 hoplimit 255 counter accept
- meta l4proto ipv6-icmp ip6 saddr fe80::/10 icmpv6 type mld-listener-query counter accept
- meta l4proto ipv6-icmp ip6 saddr fe80::/10 icmpv6 type mld-listener-report counter accept
- meta l4proto ipv6-icmp ip6 saddr fe80::/10 icmpv6 type mld-listener-reduction counter accept
- meta l4proto ipv6-icmp ip6 saddr fe80::/10 icmpv6 type mld2-listener-report counter accept
- meta l4proto ipv6-icmp icmpv6 type 148 ip6 hoplimit 255 counter accept comment "Certification Path Solicitation (SEND)"
- meta l4proto ipv6-icmp icmpv6 type 149 ip6 hoplimit 255 counter accept comment "Certification Path Advertisement (SEND)"
- meta l4proto ipv6-icmp ip6 saddr fe80::/10 icmpv6 type 151 ip6 hoplimit 1 counter accept comment "Multicast Router Advertisement (MRD)"
- meta l4proto ipv6-icmp ip6 saddr fe80::/10 icmpv6 type 152 ip6 hoplimit 1 counter accept comment "Multicast Router Solicitation (MRD)"
- meta l4proto ipv6-icmp ip6 saddr fe80::/10 icmpv6 type 153 ip6 hoplimit 1 counter accept comment "Multicast Router Termination (MRD)"
icmpv6_fwd_allow_experimental:
# RFC 4890, 4.3.4. Traffic for Which a Policy Should Be Defined
- meta l4proto ipv6-icmp icmpv6 type 150 counter drop comment "Seamoby Experimental"
icmpv6_fwd_drop_experimental:
# RFC 4890, 4.3.4. Traffic for Which a Policy Should Be Defined
- meta l4proto ipv6-icmp icmpv6 type 150 counter drop comment "Seamoby Experimental"
icmpv6_fwd_allow_unallocated:
# RFC 4890, 4.3.4. Traffic for Which a Policy Should Be Defined
- meta l4proto ipv6-icmp icmpv6 type 5-99 counter drop comment "Unallocated error ICMPv6"
- meta l4proto ipv6-icmp icmpv6 type 102-126 counter drop comment "Unallocated error ICMPv6"
- meta l4proto ipv6-icmp icmpv6 type 154-199 counter drop comment "Unallocated informational ICMPv6"
- meta l4proto ipv6-icmp icmpv6 type 202-254 counter drop comment "Unallocated informational ICMPv6"
icmpv6_fwd_drop_unallocated:
# RFC 4890, 4.3.4. Traffic for Which a Policy Should Be Defined
- meta l4proto ipv6-icmp icmpv6 type 5-99 counter drop comment "Unallocated error ICMPv6"
- meta l4proto ipv6-icmp icmpv6 type 102-126 counter drop comment "Unallocated error ICMPv6"
- meta l4proto ipv6-icmp icmpv6 type 154-199 counter drop comment "Unallocated informational ICMPv6"
- meta l4proto ipv6-icmp icmpv6 type 202-254 counter drop comment "Unallocated informational ICMPv6"
icmpv6_fwd_drop_dangerous:
# RFC 4890, 4.3.5. Traffic That Should Be Dropped Unless a Good Case Can Be Made
- meta l4proto ipv6-icmp icmpv6 type 138 counter drop comment "Router Renumbering"
- meta l4proto ipv6-icmp icmpv6 type 139 counter drop comment "Node Information Query"
- meta l4proto ipv6-icmp icmpv6 type 140 counter drop comment "Node Information Response"
- meta l4proto ipv6-icmp icmpv6 type { 100, 101, 200, 201 } counter drop comment "Experimental ICMPv6 allocations"
- meta l4proto ipv6-icmp icmpv6 type { 127, 255 } counter drop comment "ICMPv6 extension numbers"
ip6_drop_deprecated:
# RFC 9288, section 3.5.1.5
- exthdr hbh exists counter drop comment "Drop IPv6 Host-by-Host extensions"
# RFC 9288, section 3.5.2.5
- rt type { 0, 1, 3 } counter drop comment "Drop IPv6 deprecated Routing Header extension"
# RFC 9288, section 3.5.10.5
- meta l4proto { 253, 254 } counter drop comment "Drop IPv6 Experiment extension"
ip_drop_deprecated:
# RFC 7126, section 4.3.5
- ip option lsrr exists counter drop comment "Drop IPv4 Loose Source Routing option"
# RFC 7126, section 4.4.5
- ip option ssrr exists counter drop comment "Drop IPv4 Strict Source Routing option"
# RFC 7126, section 4.5.5
- ip option rr exists counter drop comment "Drop IPv4 Record Route option"
# RFC 7126, section 4.8.5
- ip option ra exists counter drop comment "Drop IPv4 Router Alert option"
set_dscp:
# set DSCP QoS classes for common types of outgoing and response traffic
# https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus1000/sw/4_0/qos/configuration/guide/nexus1000v_qos/qos_6dscp_val.pdf
- tcp dport domain ip dscp set cs2 counter continue # CS2 (DSCP 16) Precedence (immediate)
- udp dport { domain, ntp } ip dscp set cs2 counter continue # CS2 (DSCP 16) Precedence (immediate)
- udp dport http ip dscp set af21 counter continue # AF21 (DSCP 18) Assured Forwarding (AF) Class 2 – low drop precedence
- udp sport http ip dscp set af21 counter continue # AF21 (DSCP 18) Assured Forwarding (AF) Class 2 – low drop precedence
- tcp dport { http, https } ip dscp set af22 counter continue # AF22 (DSCP 20) Assured Forwarding (AF) Class 2 – medium drop precedence
- tcp sport { http, https } ip dscp set af22 counter continue # AF22 (DSCP 20) Assured Forwarding (AF) Class 2 – medium drop precedence
- tcp dport { smtp, imaps } ip dscp set af21 counter continue # AF22 (DSCP 20) Assured Forwarding (AF) Class 2 – medium drop precedence
- tcp sport { smtp, imaps } ip dscp set af21 counter continue # AF22 (DSCP 20) Assured Forwarding (AF) Class 2 – medium drop precedence
# ]]]