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| Les deux révisions précédentes Révision précédente Prochaine révision | Révision précédente Prochaine révision Les deux révisions suivantes | ||
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doc:reseau:iptables-pare-feu-pour-une-passerelle [16/11/2014 11:24] Hypathie [Le script de la passerelle] |
doc:reseau:iptables-pare-feu-pour-une-passerelle [16/11/2014 12:40] Hypathie [Les règles du pare-feu pas à pas] |
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|---|---|---|---|
| Ligne 376: | Ligne 376: | ||
| iptables -t filter -A FORWARD -i eth1 -o eth0 -s 192.168.1.0/24 -d 0.0.0.0/0 -p\ | iptables -t filter -A FORWARD -i eth1 -o eth0 -s 192.168.1.0/24 -d 0.0.0.0/0 -p\ | ||
| - | tcp -m state --state NEW,ESTABLISHED,RELATED -j ACCEPT | + | tcp -m state --state NEW,ESTABLISHED -j ACCEPT |
| iptables -t filter -A FORWARD -i eth0 -o eth1 -s 0.0.0.0/0 -d 192.168.1.0/24 -p\ | iptables -t filter -A FORWARD -i eth0 -o eth1 -s 0.0.0.0/0 -d 192.168.1.0/24 -p\ | ||
| - | tcp -m state --state ESTABLISHED,RELATED -j ACCEPT | + | tcp -m state --state ESTABLISHED -j ACCEPT |
| </code> | </code> | ||
| Ligne 390: | Ligne 390: | ||
| Chain FORWARD (policy DROP) | Chain FORWARD (policy DROP) | ||
| target prot opt source destination | target prot opt source destination | ||
| - | ACCEPT tcp -- 192.168.1.0/24 anywhere state NEW,RELATED,ESTABLISHED | + | ACCEPT tcp -- 192.168.1.0/24 anywhere state NEW,ESTABLISHED |
| - | ACCEPT tcp -- anywhere 192.168.1.0/24 state RELATED,ESTABLISHED | + | ACCEPT tcp -- anywhere 192.168.1.0/24 state ESTABLISHED |
| Chain OUTPUT (policy ACCEPT) | Chain OUTPUT (policy ACCEPT) | ||
| Ligne 411: | Ligne 411: | ||
| Chain FORWARD (policy DROP) | Chain FORWARD (policy DROP) | ||
| target prot opt source destination | target prot opt source destination | ||
| - | ACCEPT tcp -- 192.168.1.0/24 anywhere state NEW,RELATED,ESTABLISHED | + | ACCEPT tcp -- 192.168.1.0/24 anywhere state NEW,ESTABLISHED |
| - | ACCEPT tcp -- anywhere 192.168.1.0/24 state RELATED,ESTABLISHED | + | ACCEPT tcp -- anywhere 192.168.1.0/24 state ESTABLISHED |
| ACCEPT icmp -- anywhere anywhere | ACCEPT icmp -- anywhere anywhere | ||
| </code> | </code> | ||
| Ligne 540: | Ligne 540: | ||
| <code root> | <code root> | ||
| iptables -t filter -A FORWARD -i eth1 -o eth0 -s 192.168.1.0/24 -d 0.0.0.0/0 -p udp\ | iptables -t filter -A FORWARD -i eth1 -o eth0 -s 192.168.1.0/24 -d 0.0.0.0/0 -p udp\ | ||
| - | --dport 53 -m state --state NEW,ESTABLISHED,RELATED -j ACCEPT | + | --dport 53 -m state --state NEW,ESTABLISHED -j ACCEPT |
| iptables -t filter -A FORWARD -i eth0 -o eth1 -s 0.0.0.0/0 -d 192.168.1.0/24 -p udp\ | iptables -t filter -A FORWARD -i eth0 -o eth1 -s 0.0.0.0/0 -d 192.168.1.0/24 -p udp\ | ||
| - | --dport 53 -m state --state ESTABLISHED,RELATED -j ACCEPT | + | --dport 53 -m state --state ESTABLISHED -j ACCEPT |
| </code> | </code> | ||
| Ligne 598: | Ligne 598: | ||
| #mais on oublie pas eth1 ! | #mais on oublie pas eth1 ! | ||
| iptables -t filter -A FORWARD -i eth1 -o eth0 -s 192.168.1.0/24 -d 0.0.0.0/0 -p\ | iptables -t filter -A FORWARD -i eth1 -o eth0 -s 192.168.1.0/24 -d 0.0.0.0/0 -p\ | ||
| - | tcp -m state --state NEW,ESTABLISHED,RELATED -j ACCEPT | + | tcp -m state --state NEW,ESTABLISHED -j ACCEPT |
| iptables -t filter -A FORWARD -i eth0 -o eth1 -s 0.0.0.0/0 -d 192.168.1.0/24 -p\ | iptables -t filter -A FORWARD -i eth0 -o eth1 -s 0.0.0.0/0 -d 192.168.1.0/24 -p\ | ||
| - | tcp -m state --state ESTABLISHED,RELATED -j ACCEPT | + | tcp -m state --state ESTABLISHED -j ACCEPT |
| iptables -t filter -A FORWARD -i eth1 -o eth0 -s 192.168.1.0/24 -d 0.0.0.0/0 -p icmp\ | iptables -t filter -A FORWARD -i eth1 -o eth0 -s 192.168.1.0/24 -d 0.0.0.0/0 -p icmp\ | ||
| Ligne 612: | Ligne 612: | ||
| #iptables -t filter -A FORWARD -i eth1 -o eth0 -s 192.168.1.0/24 -d 0.0.0.0/0 -p udp\ | #iptables -t filter -A FORWARD -i eth1 -o eth0 -s 192.168.1.0/24 -d 0.0.0.0/0 -p udp\ | ||
| - | # --dport 53 -m state --state NEW,ESTABLISHED,RELATED -j ACCEPT | + | # --dport 53 -m state --state NEW,ESTABLISHED -j ACCEPT |
| #iptables -t filter -A FORWARD -i eth0 -o eth1 -s 0.0.0.0/0 -d 192.168.1.0/24 -p udp\ | #iptables -t filter -A FORWARD -i eth0 -o eth1 -s 0.0.0.0/0 -d 192.168.1.0/24 -p udp\ | ||
| - | # --dport 53 -m state --state ESTABLISHED,RELATED -j ACCEPT | + | # --dport 53 -m state --state ESTABLISHED -j ACCEPT |
| ##Règles icmp pour INPUT et OUTPUT | ##Règles icmp pour INPUT et OUTPUT | ||
| Ligne 635: | Ligne 635: | ||
| iptables -t filter -A OUTPUT -o eth0 -p udp -m udp --dport 53\ | iptables -t filter -A OUTPUT -o eth0 -p udp -m udp --dport 53\ | ||
| - | -m state --state NEW,RELATED,ESTABLISHED -j ACCEPT | + | -m state --state NEW,ESTABLISHED -j ACCEPT |
| iptables -t filter -A INPUT -i eth0 -p udp -m udp --sport 53\ | iptables -t filter -A INPUT -i eth0 -p udp -m udp --sport 53\ | ||
| - | -m state --state RELATED,ESTABLISHED -j ACCEPT | + | -m state --state ESTABLISHED -j ACCEPT |
| iptables -t filter -A OUTPUT -o eth1 -p udp -m udp --dport 53\ | iptables -t filter -A OUTPUT -o eth1 -p udp -m udp --dport 53\ | ||
| - | -m state --state NEW,RELATED,ESTABLISHED -j ACCEPT | + | -m state --state NEW,ESTABLISHED -j ACCEPT |
| iptables -t filter -A INPUT -i eth1 -p udp -m udp --sport 53\ | iptables -t filter -A INPUT -i eth1 -p udp -m udp --sport 53\ | ||
| - | -m state --state RELATED,ESTABLISHED -j ACCEPT | + | -m state --state ESTABLISHED -j ACCEPT |
| iptables -t filter -A OUTPUT -o eth0 -p tcp -m multiport --dports\ | iptables -t filter -A OUTPUT -o eth0 -p tcp -m multiport --dports\ | ||
| - | 80,443,8000 -m state --state NEW,RELATED,ESTABLISHED -j ACCEPT | + | 80,443,8000 -m state --state NEW,ESTABLISHED -j ACCEPT |
| iptables -t filter -A INPUT -i eth0 -p tcp -m multiport --sports\ | iptables -t filter -A INPUT -i eth0 -p tcp -m multiport --sports\ | ||
| - | 80,443,8000 -m state --state RELATED,ESTABLISHED -j ACCEPT | + | 80,443,8000 -m state --state ESTABLISHED -j ACCEPT |
| iptables -A OUTPUT -o eth1 -p tcp -m multiport --dports 80,443,8000 -j ACCEPT | iptables -A OUTPUT -o eth1 -p tcp -m multiport --dports 80,443,8000 -j ACCEPT | ||
