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Set up Basic Firewall Functions
System Prep
- apt-get remove nfs-common rpcbind
- apt-get install ifrename
Multiple Network Interfaces on Debian
- for i in eth0 eth1 eth2; do ADD=$(ifconfig $i | head -1 | cut -f 11 -d " "); echo "$i mac $ADD" >> /etc/iftab; done
- > /etc/network/interfaces; vi /etc/network/interfaces
Configure Packet Forwarding / Basic IPTables Rules Set / Network Startup Script
- sed -i 's/#net.ipv4.ip_forward=1/net.ipv4.ip_forward=1/' /etc/sysctl.conf
- sysctl -p
- mkdir /root/scripts
- vi /root/scripts/iptables-restore
- iptables-restore < /root/scripts/iptables-restore
- vi /root/scripts/netup.sh
- vi /root/scripts/netdown.sh