diff options
Diffstat (limited to 'data/templates/firewall/nftables-nat.tmpl')
| -rw-r--r-- | data/templates/firewall/nftables-nat.tmpl | 154 |
1 files changed, 76 insertions, 78 deletions
diff --git a/data/templates/firewall/nftables-nat.tmpl b/data/templates/firewall/nftables-nat.tmpl index 9ea880697..922f3dcb4 100644 --- a/data/templates/firewall/nftables-nat.tmpl +++ b/data/templates/firewall/nftables-nat.tmpl @@ -3,146 +3,144 @@ {% macro nat_rule(rule, config, chain) %} {% set comment = '' %} {% set base_log = '' %} -{% set src_addr = 'ip saddr ' + config.source.address.replace('!','!= ') if config.source is defined and config.source.address is defined and config.source.address is not none %} -{% set dst_addr = 'ip daddr ' + config.destination.address.replace('!','!= ') if config.destination is defined and config.destination.address is defined and config.destination.address is not none %} +{% set src_addr = 'ip saddr ' ~ config.source.address.replace('!','!= ') if config.source.address is vyos_defined %} +{% set dst_addr = 'ip daddr ' ~ config.destination.address.replace('!','!= ') if config.destination.address is vyos_defined %} {# negated port groups need special treatment, move != in front of { } group #} -{% if config.source is defined and config.source.port is defined and config.source.port is not none and config.source.port.startswith('!=') %} -{% set src_port = 'sport != { ' + config.source.port.replace('!=','') + ' }' %} +{% if config.source.port is vyos_defined and config.source.port.startswith('!=') %} +{% set src_port = 'sport != { ' ~ config.source.port.replace('!=','') ~ ' }' %} {% else %} -{% set src_port = 'sport { ' + config.source.port + ' }' if config.source is defined and config.source.port is defined and config.source.port is not none %} +{% set src_port = 'sport { ' ~ config.source.port ~ ' }' if config.source.port is vyos_defined %} {% endif %} {# negated port groups need special treatment, move != in front of { } group #} -{% if config.destination is defined and config.destination.port is defined and config.destination.port is not none and config.destination.port.startswith('!=') %} -{% set dst_port = 'dport != { ' + config.destination.port.replace('!=','') + ' }' %} +{% if config.destination.port is vyos_defined and config.destination.port.startswith('!=') %} +{% set dst_port = 'dport != { ' ~ config.destination.port.replace('!=','') ~ ' }' %} {% else %} -{% set dst_port = 'dport { ' + config.destination.port + ' }' if config.destination is defined and config.destination.port is defined and config.destination.port is not none %} +{% set dst_port = 'dport { ' ~ config.destination.port ~ ' }' if config.destination.port is vyos_defined %} {% endif %} -{% if chain == 'PREROUTING' %} -{% set comment = 'DST-NAT-' + rule %} -{% set base_log = '[NAT-DST-' + rule %} -{% set interface = ' iifname "' + config.inbound_interface + '"' if config.inbound_interface is defined and config.inbound_interface != 'any' else '' %} -{% if config.translation is defined and config.translation.address is defined and config.translation.address is not none %} +{% if chain is vyos_defined('PREROUTING') %} +{% set comment = 'DST-NAT-' ~ rule %} +{% set base_log = '[NAT-DST-' ~ rule %} +{% set interface = ' iifname "' ~ config.inbound_interface ~ '"' if config.inbound_interface is vyos_defined and config.inbound_interface is not vyos_defined('any') else '' %} +{% if config.translation.address is vyos_defined %} {# support 1:1 network translation #} {% if config.translation.address | is_ip_network %} -{% set trns_addr = 'dnat ip prefix to ip daddr map { ' + config.destination.address + ' : ' + config.translation.address + ' }' %} +{% set trns_addr = 'dnat ip prefix to ip daddr map { ' ~ config.destination.address ~ ' : ' ~ config.translation.address ~ ' }' %} {# we can now clear out the dst_addr part as it's already covered in aboves map #} {% set dst_addr = '' %} {% else %} -{% set trns_addr = 'dnat to ' + config.translation.address %} +{% set trns_addr = 'dnat to ' ~ config.translation.address %} {% endif %} {% endif %} -{% elif chain == 'POSTROUTING' %} -{% set comment = 'SRC-NAT-' + rule %} -{% set base_log = '[NAT-SRC-' + rule %} -{% set interface = ' oifname "' + config.outbound_interface + '"' if config.outbound_interface is defined and config.outbound_interface != 'any' else '' %} -{% if config.translation is defined and config.translation.address is defined and config.translation.address is not none %} -{% if config.translation.address == 'masquerade' %} +{% elif chain is vyos_defined('POSTROUTING') %} +{% set comment = 'SRC-NAT-' ~ rule %} +{% set base_log = '[NAT-SRC-' ~ rule %} +{% set interface = ' oifname "' ~ config.outbound_interface ~ '"' if config.outbound_interface is vyos_defined and config.outbound_interface is not vyos_defined('any') else '' %} +{% if config.translation.address is vyos_defined %} +{% if config.translation.address is vyos_defined('masquerade') %} {% set trns_addr = config.translation.address %} -{% if config.translation.port is defined and config.translation.port is not none %} -{% set trns_addr = trns_addr + ' to ' %} +{% if config.translation.port is vyos_defined %} +{% set trns_addr = trns_addr ~ ' to ' %} {% endif %} {# support 1:1 network translation #} {% elif config.translation.address | is_ip_network %} -{% set trns_addr = 'snat ip prefix to ip saddr map { ' + config.source.address + ' : ' + config.translation.address + ' }' %} +{% set trns_addr = 'snat ip prefix to ip saddr map { ' ~ config.source.address ~ ' : ' ~ config.translation.address ~ ' }' %} {# we can now clear out the src_addr part as it's already covered in aboves map #} {% set src_addr = '' %} {% else %} -{% set trns_addr = 'snat to ' + config.translation.address %} +{% set trns_addr = 'snat to ' ~ config.translation.address %} {% endif %} {% endif %} {% endif %} -{% set trns_port = ':' + config.translation.port if config.translation is defined and config.translation.port is defined and config.translation.port is not none %} +{% set trns_port = ':' ~ config.translation.port if config.translation.port is vyos_defined %} {# protocol has a default value thus it is always present #} -{% if config.protocol == 'tcp_udp' %} +{% if config.protocol is vyos_defined('tcp_udp') %} {% set protocol = 'tcp' %} -{% set comment = comment + ' tcp_udp' %} +{% set comment = comment ~ ' tcp_udp' %} {% else %} {% set protocol = config.protocol %} {% endif %} -{% if config.log is defined %} -{% if config.exclude is defined %} -{% set log = base_log + '-EXCL]' %} -{% elif config.translation is defined and config.translation.address is defined and config.translation.address == 'masquerade' %} +{% if config.log is vyos_defined %} +{% if config.exclude is vyos_defined %} +{% set log = base_log ~ '-EXCL]' %} +{% elif config.translation.address is vyos_defined('masquerade') %} {% set log = base_log +'-MASQ]' %} {% else %} -{% set log = base_log + ']' %} +{% set log = base_log ~ ']' %} {% endif %} {% endif %} -{% if config.exclude is defined %} +{% if config.exclude is vyos_defined %} {# rule has been marked as 'exclude' thus we simply return here #} {% set trns_addr = 'return' %} {% set trns_port = '' %} {% endif %} {# T1083: NAT address and port translation options #} -{% if config.translation is defined and config.translation.options is defined and config.translation.options is not none %} -{% if config.translation.options.address_mapping is defined and config.translation.options.address_mapping == "persistent" %} +{% if config.translation.options is vyos_defined %} +{% if config.translation.options.address_mapping is vyos_defined('persistent') %} {% set trns_opts_addr = 'persistent' %} {% endif %} -{% if config.translation.options.port_mapping is defined %} -{% if config.translation.options.port_mapping == "random" %} -{% set trns_opts_port = 'random' %} -{% elif config.translation.options.port_mapping == "fully-random" %} -{% set trns_opts_port = 'fully-random' %} -{% endif %} +{% if config.translation.options.port_mapping is vyos_defined('random') %} +{% set trns_opts_port = 'random' %} +{% elif config.translation.options.port_mapping is vyos_defined('fully-random') %} +{% set trns_opts_port = 'fully-random' %} {% endif %} {% endif %} -{% if trns_opts_addr and trns_opts_port %} -{% set trns_opts = trns_opts_addr + ',' + trns_opts_port %} -{% elif trns_opts_addr %} +{% if trns_opts_addr is vyos_defined and trns_opts_port is vyos_defined %} +{% set trns_opts = trns_opts_addr ~ ',' ~ trns_opts_port %} +{% elif trns_opts_addr is vyos_defined %} {% set trns_opts = trns_opts_addr %} -{% elif trns_opts_port %} +{% elif trns_opts_port is vyos_defined %} {% set trns_opts = trns_opts_port %} {% endif %} -{% set output = 'add rule ip nat ' + chain + interface %} -{% if protocol != 'all' %} -{% set output = output + ' ip protocol ' + protocol %} +{% set output = 'add rule ip nat ' ~ chain ~ interface %} +{% if protocol is not vyos_defined('all') %} +{% set output = output ~ ' ip protocol ' ~ protocol %} {% endif %} -{% if src_addr %} -{% set output = output + ' ' + src_addr %} +{% if src_addr is vyos_defined %} +{% set output = output ~ ' ' ~ src_addr %} {% endif %} -{% if src_port %} -{% set output = output + ' ' + protocol + ' ' + src_port %} +{% if src_port is vyos_defined %} +{% set output = output ~ ' ' ~ protocol ~ ' ' ~ src_port %} {% endif %} -{% if dst_addr %} -{% set output = output + ' ' + dst_addr %} +{% if dst_addr is vyos_defined %} +{% set output = output ~ ' ' ~ dst_addr %} {% endif %} -{% if dst_port %} -{% set output = output + ' ' + protocol + ' ' + dst_port %} +{% if dst_port is vyos_defined %} +{% set output = output ~ ' ' ~ protocol ~ ' ' ~ dst_port %} {% endif %} {# Count packets #} -{% set output = output + ' counter' %} +{% set output = output ~ ' counter' %} {# Special handling of log option, we must repeat the entire rule before the #} {# NAT translation options are added, this is essential #} -{% if log %} -{% set log_output = output + ' log prefix "' + log + '" comment "' + comment + '"' %} +{% if log is vyos_defined %} +{% set log_output = output ~ ' log prefix "' ~ log ~ '" comment "' ~ comment ~ '"' %} {% endif %} -{% if trns_addr %} -{% set output = output + ' ' + trns_addr %} +{% if trns_addr is vyos_defined %} +{% set output = output ~ ' ' ~ trns_addr %} {% endif %} -{% if trns_port %} +{% if trns_port is vyos_defined %} {# Do not add a whitespace here, translation port must be directly added after IP address #} {# e.g. 192.0.2.10:3389 #} -{% set output = output + trns_port %} +{% set output = output ~ trns_port %} {% endif %} -{% if trns_opts %} -{% set output = output + ' ' + trns_opts %} +{% if trns_opts is vyos_defined %} +{% set output = output ~ ' ' ~ trns_opts %} {% endif %} -{% if comment %} -{% set output = output + ' comment "' + comment + '"' %} +{% if comment is vyos_defined %} +{% set output = output ~ ' comment "' ~ comment ~ '"' %} {% endif %} -{{ log_output if log_output }} +{{ log_output if log_output is vyos_defined}} {{ output }} {# Special handling if protocol is tcp_udp, we must repeat the entire rule with udp as protocol #} -{% if config.protocol == 'tcp_udp' %} -{# Beware of trailing whitespace, without it the comment tcp_udp will be changed to udp_udp #} -{{ log_output | replace('tcp ', 'udp ') if log_output }} +{% if config.protocol is vyos_defined('tcp_udp') %} +{# Beware of trailing whitespace, without it the comment tcp_udp will be changed to udp_udp #} +{{ log_output | replace('tcp ', 'udp ') if log_output is vyos_defined }} {{ output | replace('tcp ', 'udp ') }} {% endif %} {% endmacro %} # Start with clean NAT table flush table ip nat -{% if helper_functions == 'remove' %} +{% if helper_functions is vyos_defined('remove') %} {# NAT if going to be disabled - remove rules and targets from nftables #} {% set base_command = 'delete rule ip raw' %} {{ base_command }} PREROUTING handle {{ pre_ct_ignore }} @@ -152,7 +150,7 @@ flush table ip nat delete chain ip raw NAT_CONNTRACK -{% elif helper_functions == 'add' %} +{% elif helper_functions is vyos_defined('add') %} {# NAT if enabled - add targets to nftables #} add chain ip raw NAT_CONNTRACK add rule ip raw NAT_CONNTRACK counter accept @@ -166,16 +164,16 @@ add rule ip raw NAT_CONNTRACK counter accept # # Destination NAT rules build up here # -{% if destination is defined and destination.rule is defined and destination.rule is not none %} -{% for rule, config in destination.rule.items() if config.disable is not defined %} +{% if destination.rule is vyos_defined %} +{% for rule, config in destination.rule.items() if config.disable is not vyos_defined %} {{ nat_rule(rule, config, 'PREROUTING') }} {% endfor %} {% endif %} # # Source NAT rules build up here # -{% if source is defined and source.rule is defined and source.rule is not none %} -{% for rule, config in source.rule.items() if config.disable is not defined %} +{% if source.rule is vyos_defined %} +{% for rule, config in source.rule.items() if config.disable is not vyos_defined %} {{ nat_rule(rule, config, 'POSTROUTING') }} {% endfor %} {% endif %} |