#! /sbin/nft -f

# 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>

table inet firewall {

	set dns {
		type ipv4_addr
		flags interval
		elements = { 193.48.225.248 }
	}

	set www {
		type ipv4_addr
		flags interval
		elements = { 193.48.225.241, 193.48.225.242, 193.48.225.243, 193.48.225.247, 193.48.225.200}
	}

	set irc {
		type ipv4_addr
		flags interval
		elements = {193.48.225.244}
	}

	set znc {
		type ipv4_addr
		flags interval
		elements = { 193.48.225.242 }
	}

	set smtp {
		type ipv4_addr
		flags interval
		elements = { 193.48.225.249, 193.48.225.245, 193.48.225.200 }
	}

	set letsencrypt {
		type ipv4_addr
		flags interval
		elements = {193.48.225.246, 193.48.225.248, 193.48.225.249}
	}

	set federez {
		type ipv4_addr
		flags interval
		elements = {193.48.225.201}
	}

	set gitlab {
		type ipv4_addr
		flags interval
		elements = { 193.48.225.243 }
	}

	set video {
		type ipv4_addr
		flags interval
		elements = { 193.48.225.240 }
	}

	set ldap {
		type ipv4_addr
		flags interval
		elements = { 193.48.225.246, 193.48.225.248 }
	}

	set ldap_clients {
		type ipv4_addr
		flags interval
		elements = { 10.7.0.0/24, 10.69.0.0/20, 185.230.78.37, 51.15.178.125, 193.48.225.0/24 }
	}

	set mysql {
		type ipv4_addr
		flags interval
		elements = {10.7.0.243}
	}

	set minecraft {
		type ipv4_addr
		flags interval
		elements = {193.48.225.202}
	}

	chain to_dmz {
		ip saddr 10.7.0.0/16 accept

		ip daddr @smtp tcp dport { 22, 25, 80 } accept
		ip daddr @dns tcp dport { 22, 53 } accept
		ip daddr @dns udp dport { 53 } accept
		ip daddr @www tcp dport { 21, 22, 80, 443 } accept
		ip daddr @federez tcp dport { 22, 53, 80, 443, 389 } accept
		ip daddr @federez udp dport { 53, 636 } accept
		ip daddr @znc tcp dport { 6667 } accept
		ip daddr @letsencrypt tcp dport { 80, 443 } accept
		ip daddr @irc tcp dport { 22, 6667, 6697, 6767, 7000, 9090 } accept
		ip daddr @video tcp dport { 37700, 6754 } accept
		ip daddr @video udp dport { 37800 } accept
		ip daddr @video tcp dport { 5678 } accept
		ip saddr $monitoring udp dport { 161 } accept

		ip daddr @minecraft tcp dport { 25565 } accept
		ip daddr @minecraft udp dport { 25565 } accept

		ip saddr @ldap_clients ip daddr @ldap tcp dport { 389, 636 } accept
		ip saddr @ldap_clients ip daddr @ldap udp dport { 636 } accept

		drop
	}

	chain from_dmz {
		ip daddr 10.0.0.0/8 accept
		ip daddr @mysql ip saddr != @www tcp dport 3306 drop
		ip daddr @mysql ip saddr != @smtp tcp dport 3306 drop
	}

}