diff options
Diffstat (limited to 'data/templates')
| -rw-r--r-- | data/templates/firewall/nftables-nat66.j2 | 158 |
1 files changed, 30 insertions, 128 deletions
diff --git a/data/templates/firewall/nftables-nat66.j2 b/data/templates/firewall/nftables-nat66.j2 index 28714c7a7..27b3eec88 100644 --- a/data/templates/firewall/nftables-nat66.j2 +++ b/data/templates/firewall/nftables-nat66.j2 @@ -1,125 +1,5 @@ #!/usr/sbin/nft -f -{% macro nptv6_rule(rule,config, chain) %} -{% set comment = '' %} -{% set base_log = '' %} -{% set dst_prefix = 'ip6 daddr ' ~ config.destination.prefix.replace('!','!= ') if config.destination.prefix is vyos_defined %} -{% set src_prefix = 'ip6 saddr ' ~ config.source.prefix.replace('!','!= ') if config.source.prefix is vyos_defined %} -{% set source_address = 'ip6 saddr ' ~ config.source.address.replace('!','!= ') if config.source.address is vyos_defined %} -{% set dest_address = 'ip6 daddr ' ~ config.destination.address.replace('!','!= ') if config.destination.address is vyos_defined %} -{# Port #} -{% 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.port is vyos_defined %} -{% endif %} -{% 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.port is vyos_defined %} -{% endif %} -{% if chain is vyos_defined('PREROUTING') %} -{% set comment = 'DST-NAT66-' ~ rule %} -{% set base_log = '[NAT66-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_ip_network %} -{# support 1:1 network translation #} -{% set dnat_type = 'dnat prefix to ' %} -{% else %} -{% set dnat_type = 'dnat to ' %} -{% endif %} -{% set trns_address = dnat_type ~ config.translation.address if config.translation.address is vyos_defined %} -{% elif chain is vyos_defined('POSTROUTING') %} -{% set comment = 'SRC-NAT66-' ~ rule %} -{% set base_log = '[NAT66-SRC-' ~ rule %} -{% if config.translation.address is vyos_defined %} -{% if config.translation.address is vyos_defined('masquerade') %} -{% set trns_address = config.translation.address %} -{% else %} -{% if config.translation.address | is_ip_network %} -{# support 1:1 network translation #} -{% set snat_type = 'snat prefix to ' %} -{% else %} -{% set snat_type = 'snat to ' %} -{% endif %} -{% set trns_address = snat_type ~ config.translation.address %} -{% endif %} -{% endif %} -{% set interface = ' oifname "' ~ config.outbound_interface ~ '"' if config.outbound_interface is vyos_defined else '' %} -{% endif %} -{% 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 is vyos_defined('tcp_udp') %} -{% set protocol = 'tcp' %} -{% set comment = comment ~ ' tcp_udp' %} -{% else %} -{% set protocol = config.protocol %} -{% endif %} -{% if config.log is vyos_defined %} -{% if config.translation.address is vyos_defined('masquerade') %} -{% set log = base_log ~ '-MASQ]' %} -{% else %} -{% set log = base_log ~ ']' %} -{% endif %} -{% endif %} -{% 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 %} -{% set output = 'add rule ip6 nat ' ~ chain ~ interface %} -{# Count packets #} -{% 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 is vyos_defined %} -{% set log_output = output ~ ' log prefix "' ~ log ~ '" comment "' ~ comment ~ '"' %} -{% endif %} -{% if src_prefix is vyos_defined %} -{% set output = output ~ ' ' ~ src_prefix %} -{% endif %} -{% if dst_port is vyos_defined %} -{% set output = output ~ ' ' ~ protocol ~ ' ' ~ dst_port %} -{% endif %} -{% if dst_prefix is vyos_defined %} -{% set output = output ~ ' ' ~ dst_prefix %} -{% endif %} -{% if source_address is vyos_defined %} -{% set output = output ~ ' ' ~ source_address %} -{% endif %} -{% if src_port is vyos_defined %} -{% set output = output ~ ' ' ~ protocol ~ ' ' ~ src_port %} -{% endif %} -{% if dest_address is vyos_defined %} -{% set output = output ~ ' ' ~ dest_address %} -{% endif %} -{% if config.exclude is vyos_defined %} -{# rule has been marked as 'exclude' thus we simply return here #} -{% set trns_address = 'return' %} -{% endif %} -{% if trns_address is vyos_defined %} -{% set output = output ~ ' ' ~ trns_address %} -{% endif %} -{% if trns_port is vyos_defined %} -{# Do not add a whitespace here, translation port must be directly added after IP address #} -{# e.g. 2001:db8::1:3389 #} -{% set output = output ~ trns_port %} -{% endif %} -{% if comment is vyos_defined %} -{% set output = output ~ ' comment "' ~ comment ~ '"' %} -{% endif %} -{{ 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 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 ip6 nat {% if helper_functions is vyos_defined('remove') %} {# NAT if going to be disabled - remove rules and targets from nftables #} {% set base_command = 'delete rule ip6 raw' %} @@ -137,19 +17,41 @@ add rule ip6 raw NAT_CONNTRACK counter accept {{ base_command }} OUTPUT position {{ out_ct_conntrack }} counter jump NAT_CONNTRACK {% endif %} -# -# Destination NAT66 rules build up here -# +{% if first_install is not vyos_defined %} +delete table ip6 vyos_nat +{% endif %} +table ip6 vyos_nat { + # + # Destination NAT66 rules build up here + # + chain PREROUTING { + type nat hook prerouting priority -100; policy accept; + counter jump VYOS_DNPT_HOOK {% if destination.rule is vyos_defined %} {% for rule, config in destination.rule.items() if config.disable is not vyos_defined %} -{{ nptv6_rule(rule, config, 'PREROUTING') }} + {{ config | nat_rule(rule, 'destination', ipv6=True) }} {% endfor %} {% endif %} -# -# Source NAT66 rules build up here -# + } + + # + # Source NAT66 rules build up here + # + chain POSTROUTING { + type nat hook postrouting priority 100; policy accept; + counter jump VYOS_SNPT_HOOK {% if source.rule is vyos_defined %} {% for rule, config in source.rule.items() if config.disable is not vyos_defined %} -{{ nptv6_rule(rule, config, 'POSTROUTING') }} + {{ config | nat_rule(rule, 'source', ipv6=True) }} {% endfor %} {% endif %} + } + + chain VYOS_DNPT_HOOK { + return + } + + chain VYOS_SNPT_HOOK { + return + } +} |