root / manifests / rules / out / icmp.pp @ 3e2b5119
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# @summary control outbound icmp packages |
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# |
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# @param v4_types ICMP v4 types that should be allowed |
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# @param v6_types ICMP v6 types that should be allowed |
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# @param order the ordering of the rules |
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# |
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class nftables::rules::out::icmp ( |
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Optional[Array[String]] $v4_types = undef, |
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Optional[Array[String]] $v6_types = undef, |
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String $order = '10', |
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) {
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if $v4_types {
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$v4_types.each | String $icmp_type | {
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nftables::rule { 'default_out-accept_icmpv4':
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content => "ip protocol icmp icmp type ${icmp_type} accept",
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order => $order, |
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} |
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} |
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} elsif $v6_types {
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nftables::rule { 'default_out-accept_icmpv4':
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content => 'ip protocol icmp accept', |
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order => $order, |
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} |
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} |
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if $v6_types {
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$v6_types.each | String $icmp_type | {
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nftables::rule { 'default_out-accept_icmpv6':
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content => "ip6 nexthdr ipv6-icmp icmpv6 type ${icmp_type} accept",
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order => $order, |
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} |
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} |
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} elsif $v4_types {
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# `ip6 nexthdr ipv6-icmp accept` doesn't match for IPv6 ICMP with extensions |
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# context: https://www.rfc-editor.org/rfc/rfc3810#section-5 |
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# https://wiki.nftables.org/wiki-nftables/index.php/Matching_packet_headers#Matching_IPv6_headers |
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nftables::rule { 'default_out-accept_icmpv6':
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content => 'meta l4proto icmpv6 accept', |
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order => $order, |
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} |
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} |
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if $v6_types == undef and $v4_types == undef {
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nftables::rule { 'default_out-accept_icmp':
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content => 'meta l4proto { icmp, icmpv6} accept',
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order => $order, |
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} |
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} |
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} |