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Showing results for tags 'nat'.
Could some of you IT wizards help me understand something about DHCP and NAT? I haven't studied these in the classroom, but I've done my share of reading and have certainly renewed DHCP and toggled NAT a few thousand times in the course of troubleshooting over the years. I was also just reviewing again the episode of hak5 where Darren + the cutie set up PPTP in BT5 and he shows how to disable DHCP for stealthiness. My limited understanding is basically that NAT allows my army of home computers to share a single external IP address by use of internal/local IP addresses and DHCP helps devices communicate with one another. So my question is "what happens when I disable one of both of these?" Empirically, I can see that I'm usually able to continue using the Internet as normal, on several devices at once. Does lack of NAT just slow down the process of identifying which of my babies (computers) a packet is meant for? Thanks
Ho can make the iptable entries in to a startup script for jasager? How do I create 2 scripts, one for WAN port routing and 1 for Android USB Tethering? iptables -A FORWARD -i eth1 -o wlan0 -s 172.16.42.0 -m state --state NEW -j ACCEPT iptables -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT iptables -t nat -A POSTROUTING -o eth1 -j MASQUERADE iptables -A FORWARD -s 172.16.42.0/24 -o usb0 -j ACCEPT iptables -A FORWARD -d 172.16.42.0/24 -m state --state ESTABLISHED,RELATED -i usb0 -j ACCEPT iptables -t nat -A POSTROUTING -s 172.16.42.0/24 -o usb0 -j MASQUERADE Thnks