89 lines
2.7 KiB
Plaintext
89 lines
2.7 KiB
Plaintext
define netif = enp0s3
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define lanif = enp0s8
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define dmzif = enp0s9
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define netip = 192.168.0.160
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define dmzip = 172.17.0.254
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define lanip = 172.16.0.254
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define lan-ntw = 172.16.0.1-172.16.0.254
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define dmz-ntw = 172.17.0.1-172.17.0.254
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define internal-dns-ip = 172.16.0.2
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define dns-forwarder-ip = 10.121.38.7
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table ip ipfilter{
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chain prerouting {
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type filter hook prerouting priority filter; policy drop;
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ct state established,related accept
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#SSH
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tcp dport 22 accept
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#Requêtes HTTP/HTTPS depuis LAN
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tcp dport {80,443} iif $lanif accept
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#Requêtes externe du serveur DNS
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ip saddr $internal-dns-ip ip daddr $dns-forwarder-ip accept
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#Pings
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icmp type echo-request iif $lanif accept
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icmp type echo-reply iif {$lanif, $dmzif} accept
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}
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chain system_in {
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type filter hook input priority filter; policy drop;
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#Communication déjà établies
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ct state established,related accept
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#SSH
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tcp dport 22 accept
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#Pings
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icmp type echo-request iif $lanif accept
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icmp type echo-reply accept
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}
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chain routing {
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type filter hook forward priority filter; policy drop;
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#Communication déjà établies
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ct state established,related accept
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#Requêtes HTTP/HTTPS depuis LAN
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tcp dport {80,443} iif $lanif accept
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#Requêtes externe du serveur DNS
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ip saddr $internal-dns-ip ip daddr $dns-forwarder-ip accept
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#Pings
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icmp type echo-request iif $lanif oif $dmzif accept
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icmp type echo-reply iif $dmzif oif $lanif accept
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}
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chain system_out {
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type filter hook output priority filter; policy drop;
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ct state established,related accept
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tcp dport 8080 accept #Proxy du lycee
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tcp sport 22 accept #SSH
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tcp dport {20,21} accept #FTP
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udp dport 53 accept #DNS
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tcp dport {80,443} accept #HTTP,HTTPS
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icmp type echo-request accept
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icmp type echo-request oif $lanif accept
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}
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chain postrouting {
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type filter hook postrouting priority filter; policy drop;
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ct state established,related accept
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tcp dport 8080 accept #Proxy du lycee
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tcp sport 22 accept #SSH
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tcp dport {20,21} accept #FTP
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udp dport 53 accept #DNS
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tcp dport {80, 443} accept #HTTP,HTTPS
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icmp type echo-request oif {$lanif, $dmzif} accept
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icmp type echo-reply oif $lanif accept
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#Requêtes externe du serveur DNS
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ip saddr $internal-dns-ip ip daddr $dns-forwarder-ip accept
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}
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chain nat_prerouting {
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type nat hook prerouting priority filter; policy accept
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}
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chain nat_postrouting {
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type nat hook postrouting priority filter; policy accept;
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#Masquage des IP de la LAN sortant sur Internet
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ip saddr $lan-ntw oif $netif snat $netip
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}
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} |