X-Git-Url: https://git.openstreetmap.org/chef.git/blobdiff_plain/5f3a5421476c68027c50b821916585ab01f0efa1..611b7465e12dd869b9635b241c8d65165860ad89:/cookbooks/networking/templates/default/nftables.conf.erb

diff --git a/cookbooks/networking/templates/default/nftables.conf.erb b/cookbooks/networking/templates/default/nftables.conf.erb
index 7fc46cff2..4a16fb098 100644
--- a/cookbooks/networking/templates/default/nftables.conf.erb
+++ b/cookbooks/networking/templates/default/nftables.conf.erb
@@ -1,35 +1,37 @@
 #!/usr/sbin/nft -f
 
-<%- unless @interfaces.empty? %>
+<% unless @interfaces.empty? -%>
 define external-interfaces = { <%= @interfaces.sort.uniq.join(", ") %> }
-<%- end %>
+<% end -%>
 
-define ip-private-addresses = { 0.0.0.0, 10.0.0.0/8, 127.0.0.0/8, 169.254.0.0/16, 172.16.0.0/12, 192.0.2.0/24, 192.168.0.0/16, 224.0.0.0/4 }
-define ip6-private-addresses = { 2001:db8::/32, fc00::/7, ff00::/8 }
+define ip-private-addresses = { 0.0.0.0, 10.0.0.0/8, 127.0.0.0/8, 169.254.0.0/16, 172.16.0.0/12, 192.0.2.0/24, 192.168.0.0/16 }
+define ip-multicast-addresses = { 224.0.0.0/4 }
+define ip6-private-addresses = { 2001:db8::/32, fc00::/7 }
+define ip6-multicast-addresses = { ff00::/8 }
 
-table inet filter {
+table inet chef-filter {
   set ip-osm-addresses {
     type ipv4_addr
-<%- unless Array(@hosts["inet"]).empty? %>
+<% unless Array(@hosts["inet"]).empty? -%>
     elements = { <%= Array(@hosts["inet"]).sort.join(", ") %> }
-<%- end %>
+<% end -%>
   }
 
   set ip6-osm-addresses {
     type ipv6_addr
-<%- unless Array(@hosts["inet"]).empty? %>
+<% unless Array(@hosts["inet"]).empty? -%>
     elements = { <%= Array(@hosts["inet6"]).sort.join(", ") %> }
-<%- end %>
+<% end -%>
   }
 
-  set ip-blacklist {
+  set ip-blocklist {
     type ipv4_addr
-    flags dynamic
+    flags interval
   }
 
-  set ip6-blacklist {
+  set ip6-blocklist {
     type ipv6_addr
-    flags dynamic
+    flags interval
   }
 
   set ratelimit-icmp-echo-ip {
@@ -44,20 +46,27 @@ table inet filter {
     timeout 120s
   }
 
-<%- node[:networking][:firewall][:sets].each do |set| %>
+<% node[:networking][:firewall][:sets].each do |set| -%>
   set <%= set %> {
-<%- if set.end_with?("-ip") %>
+<% if set.end_with?("-ip") -%>
     type ipv4_addr
-<%- elsif set.end_with?("-ip6") %>
+<% elsif set.end_with?("-ip6") -%>
     type ipv6_addr
-<%- end %>
+<% end -%>
     flags dynamic
-<%- unless set.start_with?("connlimit-") %>
+<% unless set.start_with?("connlimit-") -%>
     timeout 120s
-<%- end %>
+<% end -%>
+  }
+
+<% end -%>
+
+<% node[:networking][:firewall][:helpers].each do |helper| -%>
+  ct helper <%= helper[:name] %> {
+    type "<%= helper[:helper] %>" protocol <%= helper[:protocol] %>
   }
 
-<%- end %>
+<% end -%>
   chain log-and-drop {
     limit rate 1/second log
     drop
@@ -69,19 +78,16 @@ table inet filter {
   }
 
   chain incoming {
-<%- if node[:networking][:firewall][:whitelist].empty? %>
-    ip saddr { $ip-private-addresses } jump log-and-drop
-<%- else %>
-    ip saddr { $ip-private-addresses } ip saddr != { <%= node[:networking][:firewall][:whitelist].sort.join(", ") %> } jump log-and-drop
-<%- end %>
-    ip6 saddr { $ip6-private-addresses } jump log-and-drop
+<% if node[:networking][:firewall][:allowlist].empty? -%>
+    ip saddr { $ip-private-addresses, $ip-multicast-addresses } jump log-and-drop
+<% else -%>
+    ip saddr { $ip-private-addresses, $ip-multicast-addresses } ip saddr != { <%= node[:networking][:firewall][:allowlist].sort.join(", ") %> } jump log-and-drop
+<% end -%>
+    ip6 saddr { $ip6-private-addresses, $ip6-multicast-addresses } jump log-and-drop
 
-    ip saddr @ip-blacklist jump log-and-drop
-    ip6 saddr @ip6-blacklist jump log-and-drop
+    ip saddr @ip-blocklist jump log-and-drop
+    ip6 saddr @ip6-blocklist jump log-and-drop
 
-    ct state { established, related } accept
-
-    icmp type { destination-unreachable } accept
     icmp type { echo-request } update @ratelimit-icmp-echo-ip { ip saddr limit rate 1/second } accept
     icmp type { echo-request } drop
 
@@ -89,6 +95,8 @@ table inet filter {
     icmpv6 type { echo-request } update @ratelimit-icmp-echo-ip6 { ip6 saddr limit rate 1/second } accept
     icmpv6 type { echo-request } drop
 
+    ct state { established, related } accept
+
     meta l4proto { icmp, icmpv6 } jump log-and-drop
 
     tcp flags & (fin|syn|rst|psh|ack|urg) == fin|psh|urg jump log-and-drop
@@ -99,24 +107,24 @@ table inet filter {
     tcp flags & (fin|psh|ack) == fin|psh jump log-and-drop
     tcp sport 0 tcp flags & (fin|syn|rst|ack) == syn jump log-and-drop
 
-<%- node[:networking][:firewall][:incoming].uniq.each do |rule| %>
+<% node[:networking][:firewall][:incoming].uniq.each do |rule| -%>
     <%= rule %>
-<%- end %>
+<% end -%>
 
     jump log-and-drop
   }
 
   chain outgoing {
-<%- if node[:networking][:firewall][:whitelist].empty? %>
+<% if node[:networking][:firewall][:allowlist].empty? -%>
     ip daddr { $ip-private-addresses } jump log-and-drop
-<%- else %>
-    ip daddr { $ip-private-addresses } ip daddr != { <%= node[:networking][:firewall][:whitelist].sort.join(", ") %> } jump log-and-drop
-<%- end %>
+<% else -%>
+    ip daddr { $ip-private-addresses } ip daddr != { <%= node[:networking][:firewall][:allowlist].sort.join(", ") %> } jump log-and-drop
+<% end -%>
     ip6 daddr { $ip6-private-addresses } jump log-and-drop
 
-<%- node[:networking][:firewall][:outgoing].each do |rule| %>
+<% node[:networking][:firewall][:outgoing].each do |rule| -%>
     <%= rule %>
-<%- end %>
+<% end -%>
 
     accept
   }
@@ -124,9 +132,9 @@ table inet filter {
   chain input {
     type filter hook input priority filter;
 
-<%- unless @interfaces.empty? %>
+<% unless @interfaces.empty? -%>
     iifname { $external-interfaces } jump incoming
-<%- end %>
+<% end -%>
 
     accept
   }
@@ -134,10 +142,10 @@ table inet filter {
   chain forward {
     type filter hook forward priority filter;
 
-<%- unless @interfaces.empty? %>
+<% unless @interfaces.empty? -%>
     iifname { $external-interfaces } jump incoming
     oifname { $external-interfaces } jump outgoing
-<%- end %>
+<% end -%>
 
     accept
   }
@@ -145,24 +153,24 @@ table inet filter {
   chain output {
     type filter hook output priority filter;
 
-<%- unless @interfaces.empty? %>
+<% unless @interfaces.empty? -%>
     oifname { $external-interfaces } jump outgoing
-<%- end %>
+<% end -%>
 
     accept
   }
 }
-<%- if node[:roles].include?("gateway") %>
+<% if node[:roles].include?("gateway") -%>
 
-table ip nat {
+table ip chef-nat {
   chain postrouting {
     type nat hook postrouting priority srcnat;
 
-<%- node.interfaces(:role => :external, :family => :inet).each do |external| %>
-<%- node.interfaces(:role => :internal, :family => :inet).each do |internal| %>
+<% node.interfaces(:role => :external, :family => :inet).each do |external| -%>
+<% node.interfaces(:role => :internal, :family => :inet).each do |internal| -%>
     oifname { <%= external[:interface] %> } ip saddr { <%= internal[:network] %>/<%= internal[:prefix] %> } snat <%= external[:address] %>
-<%- end %>
-<%- end %>
+<% end -%>
+<% end -%>
   }
 }
-<%- end %>
+<% end -%>