firewall/nat.nft

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#! /sbin/nft -f
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# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# Copyright © 2018-2019 Hugo Levy-Falk <hugo@klafyvel.me>
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table ip nat {
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set radius_federez {
type ipv4_addr
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elements = { 195.154.165.76, 185.230.78.47 }
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}
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chain prerouting {
type nat hook prerouting priority 0;
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ip saddr $range_prerezotage ip daddr != { $intranet, $comnpay, $website } tcp dport {http,https} dnat $bounce_server;
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ip saddr @radius_federez ip daddr $ip_self_public tcp dport { 636, 389 } dnat $ip_radius;
ip saddr @radius_federez ip daddr $ip_self_public udp dport { 636, 1812 } dnat $ip_radius;
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}
chain postrouting {
type nat hook postrouting priority 100
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meta oifname != $if_supelec return
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ip saddr $ip_radius ip daddr @radius_federez tcp dport { 636, 389} snat to $ip_self_public
ip saddr $ip_radius ip daddr @radius_federez udp dport { 636, 1812 } snat to $ip_self_public
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ip daddr != {10.0.0.0/8, $range_public} ip saddr vmap {
$range_adherent : goto adherent_nat,
$range_admin : goto admin_nat,
$range_federez : goto federez_nat,
$range_aloes : goto aloes_nat,
$range_prerezotage : goto prerezotage_nat
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}
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ip daddr != {10.0.0.0/8, $range_public} ip saddr != $range_public snat to $ip_self_public
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}
}