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nftables-ct.j2
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nftables-ct.j2
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#!/usr/sbin/nft -f
{% set nft_ct_ignore_name = 'VYOS_CT_IGNORE' %}
{% set nft_ct_timeout_name = 'VYOS_CT_TIMEOUT' %}
# we first flush all chains and render the content from scratch - this makes
# any delta check obsolete
flush chain raw {{ nft_ct_ignore_name }}
flush chain raw {{ nft_ct_timeout_name }}
table raw {
chain {{ nft_ct_ignore_name }} {
{% if ignore.rule is vyos_defined %}
{% for rule, rule_config in ignore.rule.items() %}
# rule-{{ rule }} {{ '- ' ~ rule_config.description if rule_config.description is vyos_defined }}
{% set nft_command = '' %}
{% if rule_config.inbound_interface is vyos_defined %}
{% set nft_command = nft_command ~ ' iifname ' ~ rule_config.inbound_interface %}
{% endif %}
{% if rule_config.protocol is vyos_defined %}
{% set nft_command = nft_command ~ ' ip protocol ' ~ rule_config.protocol %}
{% endif %}
{% if rule_config.destination.address is vyos_defined %}
{% set nft_command = nft_command ~ ' ip daddr ' ~ rule_config.destination.address %}
{% endif %}
{% if rule_config.destination.port is vyos_defined %}
{% set nft_command = nft_command ~ ' ' ~ rule_config.protocol ~ ' dport { ' ~ rule_config.destination.port ~ ' }' %}
{% endif %}
{% if rule_config.source.address is vyos_defined %}
{% set nft_command = nft_command ~ ' ip saddr ' ~ rule_config.source.address %}
{% endif %}
{% if rule_config.source.port is vyos_defined %}
{% set nft_command = nft_command ~ ' ' ~ rule_config.protocol ~ ' sport { ' ~ rule_config.source.port ~ ' }' %}
{% endif %}
{{ nft_command }} counter notrack comment ignore-{{ rule }}
{% endfor %}
{% endif %}
return
}
chain {{ nft_ct_timeout_name }} {
{% if timeout.custom.rule is vyos_defined %}
{% for rule, rule_config in timeout.custom.rule.items() %}
# rule-{{ rule }} {{ '- ' ~ rule_config.description if rule_config.description is vyos_defined }}
{% endfor %}
{% endif %}
return
}
}

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