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https://gitlab.com/shorewall/code.git
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Add 'dbl' interface option
Signed-off-by: Tom Eastep <teastep@shorewall.net>
This commit is contained in:
Tom Eastep
parent
56b6db1a3d
commit
e71fb3249a
@ -6187,6 +6187,8 @@ sub get_configuration( $$$$ ) {
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} else {
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default_yes_no( 'DYNAMIC_BLACKLIST', 'Yes' );
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}
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} else {
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default_yes_no( 'DYNAMIC_BLACKLIST', 'Yes' );
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}
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default_yes_no 'REQUIRE_INTERFACE' , '';
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@ -866,15 +866,30 @@ sub add_common_rules ( $ ) {
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}
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}
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if ( $dbl_ipset && ! get_interface_option( $interface, 'nodbl' ) ) {
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if ( $dbl_ipset && ( ( my $setting = get_interface_option( $interface, 'dbl' ) ) ne '0:0' ) ) {
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my ( $in, $out ) = split /:/, $setting;
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if ( $in == 1 ) {
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#
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# src
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#
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add_ijump_extended( $filter_table->{input_option_chain($interface)}, j => $dbl_target, $origin{DYNAMIC_BLACKLIST}, @state, set => "--match-set $dbl_ipset src" );
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add_ijump_extended( $filter_table->{output_option_chain($interface)}, j => $dbl_target, $origin{DYNAMIC_BLACKLIST}, @state, set => "--match-set $dbl_ipset dst" ) if $dbl_type =~ /,src-dst$/;
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add_ijump_extended( $filter_table->{forward_option_chain($interface)}, j => $dbl_target, $origin{DYNAMIC_BLACKLIST}, @state, set => "--match-set $dbl_ipset src" );
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add_ijump_extended( $filter_table->{forward_option_chain($interface)}, j => $dbl_target, $origin{DYNAMIC_BLACKLIST}, @state, set => "--match-set $dbl_ipset dst" ) if $dbl_type =~ /,src-dst$/;
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} elsif ( $in == 2 ) {
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add_ijump_extended( $filter_table->{forward_option_chain($interface)}, j => $dbl_target, $origin{DYNAMIC_BLACKLIST}, @state, set => "--match-set $dbl_ipset dst" );
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}
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if ( $out == 2 ) {
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#
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# dst
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#
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add_ijump_extended( $filter_table->{output_option_chain($interface)}, j => $dbl_target, $origin{DYNAMIC_BLACKLIST}, @state, set => "--match-set $dbl_ipset dst" );
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}
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}
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for ( option_chains( $interface ) ) {
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add_ijump_extended( $filter_table->{$_}, j => $dynamicref, $origin{DYNAMIC_BLACKLIST}, @state ) if $dynamicref && ! get_interface_option( $interface, 'nodbl' );
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add_ijump_extended( $filter_table->{$_}, j => $dynamicref, $origin{DYNAMIC_BLACKLIST}, @state ) if $dynamicref && ( get_interface_option( $interface, 'dbl' ) ne '0:0' );
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add_ijump_extended( $filter_table->{$_}, j => 'ACCEPT', $origin{FASTACCEPT}, state_imatch $faststate )->{comment} = '' if $config{FASTACCEPT};
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}
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}
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@ -337,6 +337,7 @@ sub initialize( $$ ) {
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arp_ignore => ENUM_IF_OPTION,
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blacklist => SIMPLE_IF_OPTION + IF_OPTION_HOST,
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bridge => SIMPLE_IF_OPTION,
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dbl => ENUM_IF_OPTION,
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destonly => SIMPLE_IF_OPTION + IF_OPTION_HOST,
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detectnets => OBSOLETE_IF_OPTION,
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dhcp => SIMPLE_IF_OPTION,
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@ -387,6 +388,7 @@ sub initialize( $$ ) {
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%validinterfaceoptions = ( accept_ra => NUMERIC_IF_OPTION,
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blacklist => SIMPLE_IF_OPTION + IF_OPTION_HOST,
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bridge => SIMPLE_IF_OPTION,
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dbl => ENUM_IF_OPTION,
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destonly => SIMPLE_IF_OPTION + IF_OPTION_HOST,
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dhcp => SIMPLE_IF_OPTION,
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ignore => NUMERIC_IF_OPTION + IF_OPTION_WILDOK,
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@ -1191,6 +1193,7 @@ sub process_interface( $$ ) {
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my %options;
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$options{port} = 1 if $port;
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$options{dbl} = $config{DYNAMIC_BLACKLIST} =~ /^ipset(-only)?,src-dst/ ? '1:2' : $config{DYNAMIC_BLACKLIST} ? '1:0' : '0:0';
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my $hostoptionsref = {};
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@ -1234,6 +1237,8 @@ sub process_interface( $$ ) {
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} else {
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warning_message "The 'blacklist' option is ignored on multi-zone interfaces";
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}
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} elsif ( $option eq 'nodbl' ) {
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$options{dbl} = '0:0';
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} else {
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$options{$option} = 1;
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$hostoptions{$option} = 1 if $hostopt;
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@ -1256,6 +1261,11 @@ sub process_interface( $$ ) {
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} else {
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$options{arp_ignore} = 1;
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}
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} elsif ( $option eq 'dbl' ) {
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my %values = ( none => '0:0', src => '1:0', dst => '2:0', 'src-dst' => '1:2' );
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fatal_error q(The 'dbl' option requires a value) unless defined $value;
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fatal_error qq(Invalid setting ($value) for 'dbl') unless defined ( $options{dbl} = $values{$value} );
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} else {
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assert( 0 );
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}
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@ -1906,7 +1916,7 @@ sub verify_required_interfaces( $ ) {
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my $returnvalue = 0;
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my $interfaces = find_interfaces_by_option 'wait';
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my $interfaces = find_interfaces_by_option( 'wait');
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if ( @$interfaces ) {
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my $first = 1;
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@ -1972,7 +1982,7 @@ sub verify_required_interfaces( $ ) {
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}
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$interfaces = find_interfaces_by_option 'required';
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$interfaces = find_interfaces_by_option( 'required' );
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if ( @$interfaces ) {
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@ -306,6 +306,72 @@ loc eth2 -</programlisting>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><emphasis
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role="bold">dbl={none|src|dst|src-dst}</emphasis></term>
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<listitem>
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<para>Added in Shorewall 5.0.10. This option defined whether
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or not dynamic blacklisting is applied to packets entering the
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firewall through this interface and whether the source address
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and/or destination address is to be compared against the
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ipset-based dynamic blacklist (DYNAMIC_BLACKLIST=ipset... in
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<ulink
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url="manpages/shorewall.conf.html">shorewall.conf(5)</ulink>).
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The default is determine by the setting of
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DYNAMIC_BLACKLIST:</para>
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<variablelist>
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<varlistentry>
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<term>DYNAMIC_BLACKLIST=No</term>
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<listitem>
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<para>Default is <emphasis role="bold">none</emphasis>
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(e.g., no dynamic blacklist checking).</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>DYNAMIC_BLACKLIST=Yes</term>
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<listitem>
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<para>Default is <emphasis role="bold">src</emphasis>
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(e.g., the source IP address is checked).</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>DYNAMIC_BLACKLIST=ipset[-only]</term>
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<listitem>
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<para>Default is <emphasis
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role="bold">src</emphasis>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>DYNAMIC_BLACKLIST=ipset[-only],src-dst...</term>
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<listitem>
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<para>Default is <emphasis
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role="bold">src-dst</emphasis> (e.g., the source IP
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addresses in checked against the ipset on input and the
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destination IP address is checked against the ipset on
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packets originating from the firewall and leaving
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through this interface).</para>
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</listitem>
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</varlistentry>
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</variablelist>
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<para>The normal setting for this option will be <emphasis
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role="bold">dst</emphasis> or <emphasis
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role="bold">none</emphasis> for internal interfaces and
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<emphasis role="bold">src</emphasis> or <emphasis
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role="bold">src-dst</emphasis> for Internet-facing
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interfaces.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><emphasis role="bold">destonly</emphasis></term>
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@ -348,7 +414,7 @@ loc eth2 -</programlisting>
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url="../bridge-Shorewall-perl.html">Shorewall-perl for
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firewall/bridging</ulink>, then you need to include
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DHCP-specific rules in <ulink
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url="/manpages/shorewall-rules.html">shorewall-rules</ulink>(8).
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url="/manpages/shorewall-rules.html">shorewall-rules</ulink>(5).
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DHCP uses UDP ports 67 and 68.</para>
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</note>
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</listitem>
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@ -493,7 +559,10 @@ loc eth2 -</programlisting>
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<listitem>
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<para>Added in Shorewall 5.0.8. When specified, dynamic
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blacklisting is disabled on the interface.</para>
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blacklisting is disabled on the interface. Beginning with
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Shorewall 5.0.10, <emphasis role="bold">nodbl</emphasis> is
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equivalent to <emphasis
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role="bold">dbl=none</emphasis>.</para>
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</listitem>
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</varlistentry>
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@ -237,6 +237,66 @@ loc eth2 -</programlisting>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><emphasis
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role="bold">dbl={none|src|dst|src-dst}</emphasis></term>
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<listitem>
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<para>Added in Shorewall 5.0.10. This option defined whether
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or not dynamic blacklisting is applied to packets entering the
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firewall through this interface and whether the source address
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and/or destination address is to be compared against the
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ipset-based dynamic blacklist (DYNAMIC_BLACKLIST=ipset... in
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<ulink
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url="manpages6/shorewall6.conf.html">shorewall6.conf(5)</ulink>).
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The default is determine by the setting of
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DYNAMIC_BLACKLIST:</para>
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<variablelist>
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<varlistentry>
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<term>DYNAMIC_BLACKLIST=No</term>
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<listitem>
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<para>Default is <emphasis role="bold">none</emphasis>
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(e.g., no dynamic blacklist checking).</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>DYNAMIC_BLACKLIST=Yes</term>
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<listitem>
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<para>Default is <emphasis role="bold">src</emphasis>
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(e.g., the source IP address is checked against the
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ipset).</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>DYNAMIC_BLACKLIST=ipset[-only]</term>
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<listitem>
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<para>Default is <emphasis
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role="bold">src</emphasis>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>DYNAMIC_BLACKLIST=ipset[-only],src-dst...</term>
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<listitem>
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<para>Default is <emphasis
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role="bold">src-dst</emphasis> (e.g., the source IP
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addresses in checked against the ipset on input and the
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destination IP address is checked against the ipset on
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packets originating from the firewall and leaving
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through this interface).</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><emphasis role="bold">destonly</emphasis></term>
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@ -370,7 +430,10 @@ loc eth2 -</programlisting>
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<listitem>
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<para>Added in Shorewall 5.0.8. When specified, dynamic
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blacklisting is disabled on the interface.</para>
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blacklisting is disabled on the interface. Beginning with
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Shorewall 5.0.10, <emphasis role="bold">nodbl</emphasis> is
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equivalent to <emphasis
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role="bold">dbl=none</emphasis>.</para>
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</listitem>
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</varlistentry>
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