define external-interfaces = { <%= @interfaces.sort.uniq.join(", ") %> }
<%- 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 chef-filter {
set ip-osm-addresses {
chain incoming {
<%- if node[:networking][:firewall][:allowlist].empty? %>
- ip saddr { $ip-private-addresses } jump log-and-drop
+ ip saddr { $ip-private-addresses, $ip-multicast-addresses } jump log-and-drop
<%- else %>
- ip saddr { $ip-private-addresses } ip saddr != { <%= node[:networking][:firewall][:allowlist].sort.join(", ") %> } jump log-and-drop
+ 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 } jump log-and-drop
+ ip6 saddr { $ip6-private-addresses, $ip6-multicast-addresses } 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
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