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Added the duplicate-cn option. This will allow multiple clients using the same certificate or username to connect concurrently. The default value is set to n #1278

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Added the duplicate-cn option. This will allow multiple clients using the same certificate or username to connect concurrently. The default value is set to n #1278

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15 changes: 13 additions & 2 deletions openvpn-install.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -277,7 +277,7 @@ function installQuestions() {
if [[ $APPROVE_IP =~ n ]]; then
read -rp "IP address: " -e -i "$IP" IP
fi
# If $IP is a private IP address, the server must be behind NAT
# If $IP is a private IP address, the server must be behind NAT
if echo "$IP" | grep -qE '^(10\.|172\.1[6789]\.|172\.2[0-9]\.|172\.3[01]\.|192\.168)'; then
echo ""
echo "It seems this server is behind NAT. What is its public IPv4 address or hostname?"
Expand Down Expand Up @@ -398,6 +398,13 @@ function installQuestions() {
fi
done
echo ""
read -rp "Do you want the same client .ovpn file to connect multiple clients? (This will add 'duplicate-cn' in the server.conf) [y/n]: " -e -i n MULTI_CLIENT_CHOICE
if [[ $MULTI_CLIENT_CHOICE =~ ^[Yy]$ ]]; then
MULTI_CLIENT="y"
else
MULTI_CLIENT="n"
fi
echo ""
echo "Do you want to use compression? It is not recommended since the VORACLE attack makes use of it."
until [[ $COMPRESSION_ENABLED =~ (y|n) ]]; do
read -rp"Enable compression? [y/n]: " -e -i n COMPRESSION_ENABLED
Expand All @@ -408,7 +415,7 @@ function installQuestions() {
echo " 2) LZ4"
echo " 3) LZ0"
until [[ $COMPRESSION_CHOICE =~ ^[1-3]$ ]]; do
read -rp"Compression algorithm [1-3]: " -e -i 1 COMPRESSION_CHOICE
read -rp"Compression algorithm [1-3]: " -e -i 1 COMPRESSION_CHOICE
done
case $COMPRESSION_CHOICE in
1)
Expand Down Expand Up @@ -809,6 +816,10 @@ function installOpenVPN() {
echo "proto ${PROTOCOL}6" >>/etc/openvpn/server.conf
fi

if [[ $MULTI_CLIENT == "y" ]]; then
echo "duplicate-cn" >>/etc/openvpn/server.conf
fi

echo "dev tun
user nobody
group $NOGROUP
Expand Down