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Use -m conntrack if available in place of -m state

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Signed-off-by: Tom Eastep <teastep@shorewall.net>
This commit is contained in:
Tom Eastep 2010-04-25 13:35:41 -07:00
parent 21e0c68ef2
commit 6d61e962eb
8 changed files with 27 additions and 19 deletions
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8
Shorewall/Perl/Shorewall/Actions.pm
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@ -856,15 +856,15 @@ sub rejNotSyn ( $$$ ) {
sub dropInvalid ( $$$ ) { sub dropInvalid ( $$$ ) {
my ($chainref, $level, $tag) = @_; my ($chainref, $level, $tag) = @_;
log_rule_limit $level, $chainref, 'dropInvalid' , 'DROP', '', $tag, 'add', '-m state --state INVALID ' if $level ne ''; log_rule_limit $level, $chainref, 'dropInvalid' , 'DROP', '', $tag, 'add', "$globals{STATEMATCH} INVALID " if $level ne '';
add_rule $chainref , '-m state --state INVALID -j DROP'; add_rule $chainref , "$globals{STATEMATCH} INVALID -j DROP";
} }
sub allowInvalid ( $$$ ) { sub allowInvalid ( $$$ ) {
my ($chainref, $level, $tag) = @_; my ($chainref, $level, $tag) = @_;
log_rule_limit $level, $chainref, 'allowInvalid' , 'ACCEPT', '', $tag, 'add', '-m state --state INVALID ' if $level ne ''; log_rule_limit $level, $chainref, 'allowInvalid' , 'ACCEPT', '', $tag, 'add', "$globals{STATEMATCH} INVALID " if $level ne '';
add_rule $chainref , '-m state --state INVALID -j ACCEPT'; add_rule $chainref , "$globals{STATEMATCH} INVALID -j ACCEPT";
} }
sub forwardUPnP ( $$$ ) { sub forwardUPnP ( $$$ ) {

2
Shorewall/Perl/Shorewall/Chains.pm
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@ -1358,7 +1358,7 @@ sub finish_chain_section ($$) {
$comment = ''; $comment = '';
add_rule $chainref, "-m state --state $state -j ACCEPT" unless $config{FASTACCEPT}; add_rule $chainref, "$globals{STATEMATCH} $state -j ACCEPT" unless $config{FASTACCEPT};
if ($sections{NEW} ) { if ($sections{NEW} ) {
if ( $chainref->{is_policy} ) { if ( $chainref->{is_policy} ) {

8
Shorewall/Perl/Shorewall/Config.pm
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@ -339,6 +339,7 @@ sub initialize( $ ) {
LOGPARMS => '', LOGPARMS => '',
TC_SCRIPT => '', TC_SCRIPT => '',
EXPORT => 0, EXPORT => 0,
STATEMATCH => '-m state --state',
UNTRACKED => 0, UNTRACKED => 0,
VERSION => "4.4.9-RC1", VERSION => "4.4.9-RC1",
CAPVERSION => 40408 , CAPVERSION => 40408 ,
@ -2502,7 +2503,10 @@ sub determine_capabilities() {
qt1( "$iptables -N $sillyname1" ); qt1( "$iptables -N $sillyname1" );
fatal_error 'Your kernel/iptables do not include state match support. No version of Shorewall will run on this system' fatal_error 'Your kernel/iptables do not include state match support. No version of Shorewall will run on this system'
unless qt1( "$iptables -A $sillyname -m state --state ESTABLISHED,RELATED -j ACCEPT"); unless
qt1( "$iptables -A $sillyname -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT") ||
qt1( "$iptables -A $sillyname -m state --state ESTABLISHED,RELATED -j ACCEPT");;
unless ( $config{ LOAD_HELPERS_ONLY } ) { unless ( $config{ LOAD_HELPERS_ONLY } ) {
# #
@ -2812,6 +2816,8 @@ sub get_configuration( $ ) {
get_capabilities( $export ); get_capabilities( $export );
$globals{STATEMATCH} = '-m conntrack --ctstate' if have_capability 'CONNTRACK_MATCH';
if ( $config{LOGRATE} || $config{LOGBURST} ) { if ( $config{LOGRATE} || $config{LOGBURST} ) {
if ( defined $config{LOGRATE} ) { if ( defined $config{LOGRATE} ) {
fatal_error"Invalid LOGRATE ($config{LOGRATE})" unless $config{LOGRATE} =~ /^\d+\/(second|minute)$/; fatal_error"Invalid LOGRATE ($config{LOGRATE})" unless $config{LOGRATE} =~ /^\d+\/(second|minute)$/;

2
Shorewall/Perl/Shorewall/Policy.pm
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@ -467,7 +467,7 @@ sub apply_policy_rules() {
sub complete_standard_chain ( $$$$ ) { sub complete_standard_chain ( $$$$ ) {
my ( $stdchainref, $zone, $zone2, $default ) = @_; my ( $stdchainref, $zone, $zone2, $default ) = @_;
add_rule $stdchainref, '-m state --state ESTABLISHED,RELATED -j ACCEPT' unless $config{FASTACCEPT}; add_rule $stdchainref, "$globals{STATEMATCH} ESTABLISHED,RELATED -j ACCEPT" unless $config{FASTACCEPT};
run_user_exit $stdchainref; run_user_exit $stdchainref;

18
Shorewall/Perl/Shorewall/Rules.pm
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@ -283,7 +283,7 @@ sub setup_blacklist() {
warning_message q(There are interfaces or hosts with the 'blacklist' option, but the 'blacklist' file is either missing or has zero size); warning_message q(There are interfaces or hosts with the 'blacklist' option, but the 'blacklist' file is either missing or has zero size);
} }
my $state = $config{BLACKLISTNEWONLY} ? $globals{UNTRACKED} ? '-m state --state NEW,INVALID,UNTRACKED ' : '-m state --state NEW,INVALID ' : ''; my $state = $config{BLACKLISTNEWONLY} ? $globals{UNTRACKED} ? "$globals{STATEMATCH} NEW,INVALID,UNTRACKED " : "$globals{STATEMATCH} NEW,INVALID " : '';
for my $hostref ( @$hosts ) { for my $hostref ( @$hosts ) {
my $interface = $hostref->[0]; my $interface = $hostref->[0];
@ -431,7 +431,7 @@ sub add_common_rules() {
my $list; my $list;
my $chain; my $chain;
my $state = $config{BLACKLISTNEWONLY} ? $globals{UNTRACKED} ? '-m state --state NEW,INVALID,UNTRACKED ' : '-m state --state NEW,INVALID ' : ''; my $state = $config{BLACKLISTNEWONLY} ? $globals{UNTRACKED} ? "$globals{STATEMATCH} NEW,INVALID,UNTRACKED " : "$globals{STATEMATCH} NEW,INVALID " : '';
my $level = $config{BLACKLIST_LOGLEVEL}; my $level = $config{BLACKLIST_LOGLEVEL};
my $rejectref = dont_move new_standard_chain 'reject'; my $rejectref = dont_move new_standard_chain 'reject';
@ -445,7 +445,7 @@ sub add_common_rules() {
setup_mss; setup_mss;
if ( $config{FASTACCEPT} ) { if ( $config{FASTACCEPT} ) {
add_rule( $filter_table->{$_} , "-m state --state ESTABLISHED,RELATED -j ACCEPT" ) for qw( INPUT FORWARD OUTPUT ); add_rule( $filter_table->{$_} , "$globals{STATEMATCH} ESTABLISHED,RELATED -j ACCEPT" ) for qw( INPUT FORWARD OUTPUT );
} }
for $interface ( all_interfaces ) { for $interface ( all_interfaces ) {
@ -517,7 +517,7 @@ sub add_common_rules() {
my $target = source_exclusion( $hostref->[3], $chainref ); my $target = source_exclusion( $hostref->[3], $chainref );
for $chain ( first_chains $interface ) { for $chain ( first_chains $interface ) {
add_jump $filter_table->{$chain} , $target, 0, join( '', "-m state --state $state ", match_source_net( $hostref->[2] ), $policy ); add_jump $filter_table->{$chain} , $target, 0, join( '', "$globals{STATEMATCH} $state ", match_source_net( $hostref->[2] ), $policy );
} }
set_interface_option $interface, 'use_input_chain', 1; set_interface_option $interface, 'use_input_chain', 1;
@ -801,14 +801,14 @@ sub setup_mac_lists( $ ) {
my $chainref = source_exclusion( $hostref->[3], $filter_table->{mac_chain $interface} ); my $chainref = source_exclusion( $hostref->[3], $filter_table->{mac_chain $interface} );
for my $chain ( first_chains $interface ) { for my $chain ( first_chains $interface ) {
add_jump $filter_table->{$chain} , $chainref, 0, "${source}-m state --state ${state} ${policy}"; add_jump $filter_table->{$chain} , $chainref, 0, "${source}$globals{STATEMATCH} ${state} ${policy}";
} }
set_interface_option $interface, 'use_input_chain', 1; set_interface_option $interface, 'use_input_chain', 1;
set_interface_option $interface, 'use_forward_chain', 1; set_interface_option $interface, 'use_forward_chain', 1;
} else { } else {
my $chainref = source_exclusion( $hostref->[3], $mangle_table->{mac_chain $interface} ); my $chainref = source_exclusion( $hostref->[3], $mangle_table->{mac_chain $interface} );
add_jump $mangle_table->{PREROUTING}, $chainref, 0, match_source_dev( $interface ) . "${source}-m state --state ${state} ${policy}"; add_jump $mangle_table->{PREROUTING}, $chainref, 0, match_source_dev( $interface ) . "${source}$globals{STATEMATCH} ${state} ${policy}";
} }
} }
} else { } else {
@ -1212,7 +1212,7 @@ sub process_rule1 ( $$$$$$$$$$$$$ ) {
unless ( $section eq 'NEW' ) { unless ( $section eq 'NEW' ) {
fatal_error "Entries in the $section SECTION of the rules file not permitted with FASTACCEPT=Yes" if $config{FASTACCEPT}; fatal_error "Entries in the $section SECTION of the rules file not permitted with FASTACCEPT=Yes" if $config{FASTACCEPT};
fatal_error "$basictarget rules are not allowed in the $section SECTION" if $actiontype & ( NATRULE | NONAT ); fatal_error "$basictarget rules are not allowed in the $section SECTION" if $actiontype & ( NATRULE | NONAT );
$rule .= "-m state --state $section " $rule .= "$globals{STATEMATCH} $section "
} }
# #
@ -2144,7 +2144,7 @@ sub generate_matrix() {
'' , '' ,
'' , '' ,
'insert' , 'insert' ,
'-m state --state NEW '; "$globals{STATEMATCH} NEW ";
} }
} }
} }
@ -2332,7 +2332,7 @@ EOF
my @chains = $config{ADMINISABSENTMINDED} ? qw/INPUT FORWARD/ : qw/INPUT OUTPUT FORWARD/; my @chains = $config{ADMINISABSENTMINDED} ? qw/INPUT FORWARD/ : qw/INPUT OUTPUT FORWARD/;
add_rule $filter_table->{$_}, '-m state --state ESTABLISHED,RELATED -j ACCEPT' for @chains; add_rule $filter_table->{$_}, "$globals{STATEMATCH} ESTABLISHED,RELATED -j ACCEPT" for @chains;
if ( $family == F_IPV6 ) { if ( $family == F_IPV6 ) {
add_rule $input, '-s ff80::/10 -j ACCEPT'; add_rule $input, '-s ff80::/10 -j ACCEPT';

2
Shorewall/Perl/Shorewall/Tunnels.pm
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@ -61,7 +61,7 @@ sub setup_tunnels() {
} }
} }
my $options = $globals{UNTRACKED} ? '-m state --state NEW,UNTRACKED -j ACCEPT' : '-m state --state NEW -j ACCEPT'; my $options = $globals{UNTRACKED} ? "$globals{STATEMATCH} NEW,UNTRACKED -j ACCEPT" : "$globals{STATEMATCH} NEW -j ACCEPT";
add_tunnel_rule $inchainref, "-p 50 $source -j ACCEPT"; add_tunnel_rule $inchainref, "-p 50 $source -j ACCEPT";
add_tunnel_rule $outchainref, "-p 50 $dest -j ACCEPT"; add_tunnel_rule $outchainref, "-p 50 $dest -j ACCEPT";

3
Shorewall/lib.cli
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@ -1537,7 +1537,8 @@ determine_capabilities() {
exit 1 exit 1
fi fi
if ! qt $IPTABLES -A $chain -m state --state ESTABLISHED,RELATED -j ACCEPT; then if ! qt $IPTABLES -A $chain -m state --state ESTABLISHED,RELATED -j ACCEPT &&
! qt $IPTABLES -A $chain -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT; then
echo " ERROR: Your kernel lacks connection tracking and/or state matching -- Shorewall will not run on this system" >&2 echo " ERROR: Your kernel lacks connection tracking and/or state matching -- Shorewall will not run on this system" >&2
exit 1 exit 1
fi fi

3
Shorewall6/lib.cli
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@ -1222,7 +1222,8 @@ determine_capabilities() {
exit 1 exit 1
fi fi
if ! qt $IP6TABLES -A $chain -m state --state ESTABLISHED,RELATED -j ACCEPT; then if ! qt $IP6TABLES -A $chain -m state --state ESTABLISHED,RELATED -j ACCEPT &&
! qt $IP6TABLES -A $chain -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT; then
echo " ERROR: Your kernel lacks connection tracking and/or state matching -- Shorewall will not run on this system" >&2 echo " ERROR: Your kernel lacks connection tracking and/or state matching -- Shorewall will not run on this system" >&2
exit 1 exit 1
fi fi