FirewallExample
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- | Please edit the following rules under your local editor and cut-and-paste these rules into DD-WRT inside Administration Tab -> Commands -> Command Shell box. Click Save Firewall after you are done. | ||
- | |||
- | <pre> | ||
- | # ---------------------- | ||
- | #--- IPTABLES START --- | ||
- | # ---------------------- | ||
- | |||
- | # | ||
- | # DEFINES: | ||
- | LAN_IP=$(nvram get lan_ipaddr) | ||
- | WAN_IP=$(nvram get wan_ipaddr) | ||
- | |||
- | # --- | ||
- | |||
- | # Create ALL_ACCEPT chain: | ||
- | iptables -N ALL_ACCEPT | ||
- | iptables -P ALL_ACCEPT ACCEPT | ||
- | # Insert ALL_ACCEPT chain on top of INPUT rules: | ||
- | iptables -I INPUT -j ALL_ACCEPT | ||
- | |||
- | # Create NAT_ACCEPT chain: | ||
- | iptables -N NAT | ||
- | iptables -P NAT ACCEPT | ||
- | # Insert NAT chain on top of INPUT and FORWARD rules: | ||
- | iptables -I INPUT -j NAT | ||
- | iptables -I FORWARD -j NAT | ||
- | |||
- | # --- | ||
- | |||
- | # private subnets (anything FROM these subnets) | ||
- | iptables -A ALL_ACCEPT -s 192.168.0.0/16 -j ACCEPT | ||
- | |||
- | # Allowing any remote IP subnets to access DD-WRT: | ||
- | iptables -A ALL_ACCEPT -s xxx.xxx.xxx.xxx -j ACCEPT | ||
- | |||
- | # --- | ||
- | |||
- | # WebAdmin (please disable DD-WRT Remote Access feature from the web interface if you are only allowing the above IP's) | ||
- | iptables -t nat -I PREROUTING -p tcp -d $WAN_IP --dport 8080 -j DNAT --to-destination $LAN_IP:443 | ||
- | |||
- | # WebAdmin (Allow from all IP's) | ||
- | #iptables -t nat -I PREROUTING -p tcp -d $WAN_IP --dport 8080 -j DNAT --to $LAN_IP:443 | ||
- | #iptables -I NAT -p tcp -d $WAN_IP --dport 443 -j ACCEPT | ||
- | |||
- | # SSH | ||
- | #iptables -t nat -I PREROUTING -p tcp -m tcp -d $WAN_IP --dport 2122 -j DNAT --to-destination 192.168.1.21:22 | ||
- | |||
- | # SSH (Allow from all IP's) | ||
- | #iptables -t nat -I PREROUTING -p tcp -m tcp -d $WAN_IP --dport 2122 -j DNAT --to-destination 192.168.1.21:22 | ||
- | #iptables -I NAT -p tcp -d 192.168.1.21 --dport 22 -j ACCEPT | ||
- | |||
- | # --- | ||
- | |||
- | # SERVER ssh for servers inside DD-WRT network (you can migrate your rules from the DD-WRT Port Forwarding rules here if you are only allowing access from above IP's) | ||
- | iptables -t nat -I PREROUTING -p tcp -d $WAN_IP --dport 22 -j DNAT --to-destination 10.1.1.30:22 | ||
- | iptables -I NAT -p tcp -d 10.1.1.30 --dport 22 -j ACCEPT | ||
- | |||
- | # --------------------- | ||
- | #--- IPTABLES END --- | ||
- | # --------------------- | ||
- | </pre> |