19 lines
611 B
Bash
19 lines
611 B
Bash
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#!/bin/bash
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# name of the ethernet gadget interface on the host
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USB_IFACE=${1:-enp0s20f0u1}
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USB_IFACE_IP=10.0.0.1
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USB_IFACE_NET=10.0.0.0/24
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# host interface to use for upstream connection
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UPSTREAM_IFACE=${2:-enxe4b97aa99867}
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ip addr add $USB_IFACE_IP/24 dev $USB_IFACE
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ifconfig $USB_IFACE up
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iptables -A FORWARD -o $UPSTREAM_IFACE -i $USB_IFACE -s $USB_IFACE_NET -m conntrack --ctstate NEW -j ACCEPT
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iptables -A FORWARD -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
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iptables -t nat -F POSTROUTING
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iptables -t nat -A POSTROUTING -o $UPSTREAM_IFACE -j MASQUERADE
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echo 1 > /proc/sys/net/ipv4/ip_forward
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