109 lines
3.6 KiB
Plaintext
109 lines
3.6 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 = 192.168.0.140
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define iplan = 172.16.0.254
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define ipdmz = 172.17.0.254
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define dnsip = 172.16.0.2
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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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# 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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# requête HTTP et HTTPS depuis LAN
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tcp dport {80,443} iif $lanif accept
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# requête externe du serveur DNS
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ip saddr $internal-dns-ip ip daddr $dns-forwarder-ip accept
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# requête DNS depuis la dmz
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udp dport 53 iif $dmzif 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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# requête DNS depuis la dmz
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udp dport 53 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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# requête DNS (UDP et TCP)
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udp dport 53 accept
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# requête HTTP et HTTPS depuis LAN
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tcp dport {80,443} iif $lanif accept
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# requête 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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# Communication déjà établies
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ct state established,related accept
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# SSH
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tcp sport 22 accept
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# Proxy
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tcp dport 8080 accept
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# requête DNS (UDP et TCP)
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udp dport 53 accept
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# requête HTTP, HTTPS
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tcp dport {80,443} accept
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# requête FTP
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tcp dport {20,21} accept
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# Pings
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icmp type echo-request accept
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icmp type echo-reply 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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# Communication déjà établies
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ct state established,related accept
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# SSH
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tcp sport 22 accept
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# Proxy
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tcp dport 8080 accept
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# requête DNS (UDP et TCP)
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udp dport 53 accept
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# requête HTTP, HTTPS
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tcp dport {80,443} accept
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# requête FTP
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tcp dport {20,21} accept
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# requête externe du serveur DNS
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ip saddr $internal-dns-ip ip daddr $dns-forwarder-ip accept
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# requête DNS depuis la dmz
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udp dport 53 oif $dmzif accept
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# Pings
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icmp type echo-request oif {$lanif, $dmzif} accept
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icmp type echo-reply oif $lanif accept
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}
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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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ip saddr $lan-ntw oif $netif snat $netip
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}
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}
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# pas fini |