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Nouveau fichier : sisr1/tp07/files_firewall/current_ruleset_partie_6.nft

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guillaume.emorine 2024-04-08 10:54:05 +02:00
parent a796151db6
commit 16d4e5f813
1 changed files with 108 additions and 0 deletions
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108
sisr1/tp07/files_firewall/current_ruleset_partie_6.nft Normal file
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define netif = enp0s3
define dmzif = enp0s8
define lanif = enp0s9
define lan-ntw = 10.0.0.0/24
define proxy = 10.121.38.1
define dns = {10.121.38.7 , 10.121.38.8}
define proxyport = 8080
define dmznet = 172.16.0.1-172.16.0.254
define firewall = 192.168.0.120
define ipdmz = 172.16.0.254
define iplan = 10.0.0.254
table ip ipfilter{
chain prerouting {
type filter hook prerouting priority filter; policy drop;
ct state established, related accept
icmp type echo-reply accept
icmp type echo-request iif {$lanif} ip daddr $dmznet accept
icmp type echo-request iif {$lanif} ip daddr {$iplan} accept
tcp dport 20 accept
tcp dport 21 accept
tcp dport {80, 443} ip saddr $lan-ntw accept
tcp sport {80, 443} ip saddr $lan-ntw accept
tcp dport 22 accept
udp sport 53 iif {$dmzif, $lanif} accept
udp dport 53 accept
ip saddr $proxy tcp dport {80, 443} accept
ip daddr $dns accept
}
chain system_in {
type filter hook input priority filter; policy drop;
ct state established, related accept
icmp type echo-reply accept
icmp type echo-request iif {$lanif} accept
tcp dport 20 accept
tcp dport 21 accept
tcp dport {80, 443} accept
tcp dport 22 accept
udp sport 53 accept
udp dport 53 accept
ip saddr $proxy tcp dport {80, 443} accept
}
chain routing {
type filter hook forward priority filter; policy drop;
ct state established, related accept
icmp type echo-request iif {$lanif} oif {$dmzif} accept
icmp type echo-reply iif {$dmzif} oif {$lanif} accept
tcp dport {80, 443} ip saddr $lan-ntw accept
tcp sport {80, 443} ip saddr $lan-ntw accept
udp sport 53 iif {$lanif, $dmzif} accept
udp dport 53 accept
ip daddr $dns accept
}
chain system_out {
type filter hook output priority filter; policy drop;
ip daddr $dns accept
ip daddr $proxy tcp dport $proxyport accept
icmp type echo-reply oif {$lanif} accept
icmp type echo-request accept
tcp dport 20 accept
tcp sport 20 accept
tcp dport 21 accept
tcp sport 21 accept
tcp dport {80, 443} accept
tcp sport {80, 443} accept
tcp sport 22 accept
udp sport 53 accept
udp dport 53 accept
}
chain postrouting {
type filter hook postrouting priority filter; policy drop;
ct state established, related accept
ip daddr $dns accept
ip daddr $proxy tcp dport $proxyport accept
icmp type echo-request ip saddr {$iplan, $ipdmz, $firewall} accept
icmp type echo-reply iif {$dmzif} oif {$lanif} accept
icmp type echo-request iif {$lanif} oif {$dmzif} accept
icmp type echo-request ip saddr $iplan oif $lanif accept
tcp dport 20 accept
tcp sport 20 accept
tcp dport 21 accept
tcp sport 21 accept
tcp dport {80, 443} accept
tcp sport {80, 443} accept
tcp sport 22 accept
udp sport 53 accept
udp dport 53 accept
ip daddr $dns accept
}
chain pre_nat {
type nat hook prerouting priority filter; policy accept;
}
chain post_nat {
type nat hook postrouting priority filter; policy accept;
ip saddr $lan-ntw oif $netif snat $firewall
ip saddr $dmznet oif $netif snat $firewall
}
}