Misairu-G · November 14, 2024 16:37 · pjhfggij · Oct 29, 2024
diff --git a/[GUIDE] Optimus laptop dGPU passthrough.md b/[GUIDE] Optimus laptop dGPU passthrough.md
diff --git a/tap_ifdown b/tap_ifdown
 #!/bin/bash

 # tap device name
 TAP=tap0

 # Network information
 NETWORK=192.168.99.0
 NETMASK=255.255.255.0
 GATEWAY=192.168.99.1

 DNSMASQPID=$(cat "/var/run/qemu-dnsmasq-$TAP.pid")

 if [ ! "$DNSMASQPID" = "" ]; then
    kill -s SIGTERM $DNSMASQPID && echo "DNSMASQ terminated"
 fi

 ip link set $TAP down
 ip addr flush dev $TAP

 iptables -t nat -D POSTROUTING -s $NETWORK/$NETMASK -j MASQUERADE
 iptables -D INPUT -i $TAP -s $NETWORK/$NETMASK -d $NETWORK/$NETMASK -j ACCEPT
 iptables -D INPUT -i $TAP -p tcp -m tcp --dport 67 -j ACCEPT
 iptables -D INPUT -i $TAP -p udp -m udp --dport 67 -j ACCEPT
 iptables -D INPUT -i $TAP -p tcp -m tcp --dport 53 -j ACCEPT
 iptables -D INPUT -i $TAP -p udp -m udp --dport 53 -j ACCEPT
 iptables -D FORWARD -i $TAP -o $TAP -j ACCEPT
 iptables -D FORWARD -s $NETWORK/$NETMASK -i $TAP -j ACCEPT
 iptables -D FORWARD -s $GATEWAY -i $TAP -j ACCEPT
 iptables -D FORWARD -d $NETWORK/$NETMASK -o $TAP -m state --state RELATED,ESTABLISHED -j ACCEPT

 echo 0 | dd of=/proc/sys/net/ipv4/ip_forward > /dev/null && echo "ip_forward disabled"
diff --git a/tap_ifup b/tap_ifup
 #!/bin/bash

 # Set to the name of your tap device
 TAP=tap0

 # Network information
 NETWORK=192.168.99.0
 NETMASK=255.255.255.0
 GATEWAY=192.168.99.1
 DHCPRANGE=192.168.99.2,192.168.99.10

 check_tap() {
    if ip link show | grep $TAP > /dev/null; then
        return
    else
        exit 1
    fi
 }

 enable_ip_forward() {
    echo 1 | dd of=/proc/sys/net/ipv4/ip_forward > /dev/null
 }

 start_dnsmasq(){
    dnsmasq \
        --strict-order \
        --interface=$TAP \
        --listen-address=$GATEWAY \
        --bind-interfaces \
        --dhcp-range=$DHCPRANGE \
        --dhcp-no-override \
        --pid-file=/var/run/qemu-dnsmasq-$TAP.pid
 }

 add_iptable_rules() {
 iptables-restore -n <<EOF
 *nat
 -A POSTROUTING -s $NETWORK/$NETMASK -j MASQUERADE
 COMMIT

 *filter
 -A INPUT -i $TAP -s $NETWORK/$NETMASK -d $NETWORK/$NETMASK -j ACCEPT
 # Allow port 67 for DHCP, port 53 for dnsmasq
 -A INPUT -i $TAP -p tcp -m tcp --dport 67 -j ACCEPT 
 -A INPUT -i $TAP -p udp -m udp --dport 67 -j ACCEPT 
 -A INPUT -i $TAP -p tcp -m tcp --dport 53 -j ACCEPT 
 -A INPUT -i $TAP -p udp -m udp --dport 53 -j ACCEPT

 # Connect the external network
 -A FORWARD -i $TAP -o $TAP -j ACCEPT
 -A FORWARD -s $NETWORK/$NETMASK -i $TAP -j ACCEPT 
 -A FORWARD -s $GATEWAY -i $TAP -j ACCEPT
 -A FORWARD -d $NETWORK/$NETMASK -o $TAP -m state --state RELATED,ESTABLISHED -j ACCEPT
 COMMIT
 EOF
 }

 start_tap() {
    enable_ip_forward
    check_tap

    # Flush old config and set new config
    ip addr flush dev $TAP
    ip addr add $GATEWAY/$NETMASK dev $TAP
    ip link set $TAP up

    start_dnsmasq

    add_iptable_rules
 }

 start_tap
	#!/bin/bash

	# tap device name
	TAP=tap0

	# Network information
	NETWORK=192.168.99.0
	NETMASK=255.255.255.0
	GATEWAY=192.168.99.1

	DNSMASQPID=$(cat "/var/run/qemu-dnsmasq-$TAP.pid")

	if [ ! "$DNSMASQPID" = "" ]; then
	kill -s SIGTERM $DNSMASQPID && echo "DNSMASQ terminated"
	fi

	ip link set $TAP down
	ip addr flush dev $TAP

	iptables -t nat -D POSTROUTING -s $NETWORK/$NETMASK -j MASQUERADE
	iptables -D INPUT -i $TAP -s $NETWORK/$NETMASK -d $NETWORK/$NETMASK -j ACCEPT
	iptables -D INPUT -i $TAP -p tcp -m tcp --dport 67 -j ACCEPT
	iptables -D INPUT -i $TAP -p udp -m udp --dport 67 -j ACCEPT
	iptables -D INPUT -i $TAP -p tcp -m tcp --dport 53 -j ACCEPT
	iptables -D INPUT -i $TAP -p udp -m udp --dport 53 -j ACCEPT
	iptables -D FORWARD -i $TAP -o $TAP -j ACCEPT
	iptables -D FORWARD -s $NETWORK/$NETMASK -i $TAP -j ACCEPT
	iptables -D FORWARD -s $GATEWAY -i $TAP -j ACCEPT
	iptables -D FORWARD -d $NETWORK/$NETMASK -o $TAP -m state --state RELATED,ESTABLISHED -j ACCEPT

	echo 0 \| dd of=/proc/sys/net/ipv4/ip_forward > /dev/null && echo "ip_forward disabled"
	#!/bin/bash

	# Set to the name of your tap device
	TAP=tap0

	# Network information
	NETWORK=192.168.99.0
	NETMASK=255.255.255.0
	GATEWAY=192.168.99.1
	DHCPRANGE=192.168.99.2,192.168.99.10

	check_tap() {
	if ip link show \| grep $TAP > /dev/null; then
	return
	else
	exit 1
	fi
	}

	enable_ip_forward() {
	echo 1 \| dd of=/proc/sys/net/ipv4/ip_forward > /dev/null
	}

	start_dnsmasq(){
	dnsmasq \
	--strict-order \
	--interface=$TAP \
	--listen-address=$GATEWAY \
	--bind-interfaces \
	--dhcp-range=$DHCPRANGE \
	--dhcp-no-override \
	--pid-file=/var/run/qemu-dnsmasq-$TAP.pid
	}

	add_iptable_rules() {
	iptables-restore -n <<EOF
	*nat
	-A POSTROUTING -s $NETWORK/$NETMASK -j MASQUERADE
	COMMIT

	*filter
	-A INPUT -i $TAP -s $NETWORK/$NETMASK -d $NETWORK/$NETMASK -j ACCEPT
	# Allow port 67 for DHCP, port 53 for dnsmasq
	-A INPUT -i $TAP -p tcp -m tcp --dport 67 -j ACCEPT
	-A INPUT -i $TAP -p udp -m udp --dport 67 -j ACCEPT
	-A INPUT -i $TAP -p tcp -m tcp --dport 53 -j ACCEPT
	-A INPUT -i $TAP -p udp -m udp --dport 53 -j ACCEPT

	# Connect the external network
	-A FORWARD -i $TAP -o $TAP -j ACCEPT
	-A FORWARD -s $NETWORK/$NETMASK -i $TAP -j ACCEPT
	-A FORWARD -s $GATEWAY -i $TAP -j ACCEPT
	-A FORWARD -d $NETWORK/$NETMASK -o $TAP -m state --state RELATED,ESTABLISHED -j ACCEPT
	COMMIT
	EOF
	}

	start_tap() {
	enable_ip_forward
	check_tap

	# Flush old config and set new config
	ip addr flush dev $TAP
	ip addr add $GATEWAY/$NETMASK dev $TAP
	ip link set $TAP up

	start_dnsmasq

	add_iptable_rules
	}

	start_tap