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Nouveau fichier : sisr1/tp07/files_firewall/current_ruleset_partie_4.nft

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Guillaume Emorine 2024-04-04 11:38:23 +02:00
parent 03a7a131f8
commit e93fb79d9d
1 changed files with 46 additions and 0 deletions
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sisr1/tp07/files_firewall/current_ruleset_partie_4.nft Normal file
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define netif = enp0s3
define dmzif = enp0s8
define lanif = enp0s9
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;
icmp type echo-reply accept
ct state established, related accept
icmp type echo-request iif {$lanif} ip daddr 172.16.0.1-172.16.0.254 accept
icmp type echo-request iif {$lanif} ip daddr {$iplan} accept
tcp dport 22 accept
}
chain system_in {
type filter hook input priority filter; policy drop;
icmp type echo-reply accept
icmp type echo-request iif {$lanif} accept
ct state established, related accept
tcp dport 22 accept
}
chain routing {
type filter hook forward priority filter; policy drop;
icmp type echo-request iif {$lanif} oif {$dmzif} accept
icmp type echo-reply iif {$dmzif} oif {$lanif} accept
}
chain system_out {
type filter hook output priority filter; policy drop;
icmp type echo-reply oif {$lanif} accept
icmp type echo-request accept
ip daddr 10.121.38.7-10.121.38.8 accept
tcp sport 22 accept
}
chain postrouting {
type filter hook postrouting priority filter; policy drop;
ip daddr 10.121.38.7-10.121.38.8 accept
icmp type echo-request ip saddr {$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 sport 22 accept
}
}