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Improve questions for NATed servers

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angristan
2018-09-21 21:53:39 +02:00
parent 4144fa9dff
commit a0ff4d7cf9
1 changed files with 6 additions and 4 deletions
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10
openvpn-install.sh
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@@ -149,8 +149,7 @@ function installOpenVPN () {
echo "You can leave the default options and just press enter if you are ok with them."
echo ""
echo "I need to know the IPv4 address of the network interface you want OpenVPN listening to."
echo "If your server is running behind a NAT, (e.g. LowEndSpirit, Scaleway) leave the IP address as it is. (local/private IP)"
echo "Otherwise, it should be your public IPv4 address."
echo "Unless your server is behind NAT, it should be your public IPv4 address."
# Detect public IPv4 address and pre-fill for the user
IP=$(ip addr | grep 'inet' | grep -v inet6 | grep -vE '127\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}' | grep -oE '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}' | head -1)
@@ -158,8 +157,11 @@ function installOpenVPN () {
# 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 "This server is behind NAT. What is the public IPv4 address or hostname?"
read -rp "Public IP address / hostname: " -e PUBLICIP
echo "It seems this server is behind NAT. What is its public IPv4 address?"
echo "We need it for the clients to connect to the server."
until [[ "$PUBLICIP" =~ ^((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])$ ]];do
read -rp "Public IPv4 address: " -e PUBLICIP
done
fi
echo ""