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48 lines
1.7 KiB
48 lines
1.7 KiB
#! /sbin/nft -f
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# Copyright © 2018-2019 Hugo Levy-Falk <hugo@klafyvel.me>
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table inet firewall {
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chain to_adherent {
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accept
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}
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chain from_adherent {
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}
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}
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table ip nat {
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# On nate les users derrière les IPs 193.48.225.11 à 193.48.225.140 en
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# attribuant les plages de ports 11135-65535 par tranche de 1700 ports.
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# On a donc 32 Ips de 10.69.0.0/20 derrière chaque Ip.
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# exemple: 10.69.0.1-10.69.0.31 : 193.48.225.11
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# On peut aussi ajouter dynamiquement des éléments :
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# nft add element nat adherent_nat_address {10.69.0.1-10.69.0.31 : 193.48.225.11}
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map adherent_nat_address {
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type ipv4_addr: ipv4_addr
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flags interval
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}
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chain adherent_nat {
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# Le script crée 32 sets et y répartit les adresses privées, puis
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# crée 2*32 lignes correspondantes de la forme de celles qui suivent
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# en matchant sur les sets précédents...
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# ip saddr @adherent_nat_grp1 ip protocol tcp snat ip saddr map @adherent_nat_address : 11135-12834
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# ip saddr @adherent_nat_grp1 ip protocol udp snat ip saddr map @adherent_nat_address : 11135-12834
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}
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}
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