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fix: Port forwarding (#284)

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Kroese 2023-12-29 17:54:06 +01:00 committed by GitHub
parent 556eb1ad5b
commit 6fbd0f7d88
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 12 additions and 12 deletions
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24
src/network.sh
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@ -4,7 +4,7 @@ set -Eeuo pipefail
# Docker environment variables
: ${DHCP:='N'}
: ${CONTROL_PORTS:=''}
: ${HOST_PORTS:=''}
: ${MAC:='82:cf:d0:5e:57:66'}
: ${VM_NET_DEV:=''}
@ -141,22 +141,22 @@ configureNAT() {
ip link set dev "$VM_NET_TAP" master dockerbridge
if [[ -z "$CONTROL_PORTS" ]] && [[ "${DISPLAY,,}" == "vnc" ]]; then
CONTROL_PORTS="5900"
fi
CONTROL_PORT_ARGS=""
for PORT in $CONTROL_PORTS ; do
CONTROL_PORT_ARGS="$CONTROL_PORT_ARGS ! --dport $PORT"
done
# Add internet connection to the VM
update-alternatives --set iptables /usr/sbin/iptables-legacy > /dev/null
update-alternatives --set ip6tables /usr/sbin/ip6tables-legacy > /dev/null
if [[ -z "$HOST_PORTS" ]] && [[ "${DISPLAY,,}" == "vnc" ]]; then
HOST_PORTS="5900"
fi
local PORT_ARGS=""
for PORT in $HOST_PORTS; do
PORT_ARGS="$PORT_ARGS ! --dport $PORT"
done
iptables -t nat -A POSTROUTING -o "$VM_NET_DEV" -j MASQUERADE
# shellcheck disable=SC2086
iptables -t nat -A PREROUTING -i "$VM_NET_DEV" -d "$IP" -p tcp $CONTROL_PORT_ARGS -j DNAT --to "$VM_NET_IP"
iptables -t nat -A PREROUTING -i "$VM_NET_DEV" -d "$IP" -p tcp $PORT_ARGS -j DNAT --to "$VM_NET_IP"
iptables -t nat -A PREROUTING -i "$VM_NET_DEV" -d "$IP" -p udp -j DNAT --to "$VM_NET_IP"
if (( KERNEL > 4 )); then