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daizack 2023-05-20 00:43:58 +00:00
parent e3a675de0d
commit 45a01c0d32
2 changed files with 39 additions and 22 deletions
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25
README.md
View file

@ -24,7 +24,22 @@ If you want to show your appreciation, you can donate via [PayPal](https://www.p
`bash openvpn-install.sh`
### Make ccd and make a file named as the client username (change 10.10.0.101 to the ip you want to assgin to the client)
```
sudo mkdir /etc/openvpn/ccd
sudo echo "ifconfig-push 10.10.0.101 255.255.255.0" >/etc/openvon/ccd/client
```
### Install client on ubuntu server
```
sudo apt update
sudo apt install openvpn
@ -36,7 +51,7 @@ Copy <USERNAME>.ovpn to the target machine
sudo service openvpn@client start
```
### Some note
### Some change made in the code, no action needed below:
partial routing (if do not want redirect all traffic to the vpn server. If you have a machine that host public app e.g. website server, you will need this setting.)
@ -45,7 +60,7 @@ add
```
route-nopull
route 10.8.0.0 255.255.255.0
route 10.10.0.0 255.255.255.0
```
make a file
@ -54,7 +69,7 @@ make a file
```
route-nopull
route 10.8.0.0 255.255.255.0
route 10.10.0.0 255.255.255.0
```
another file
@ -80,6 +95,4 @@ client-config-dir /etc/openvpn/ccd
client-to-client
```
Then go to /etc/openvpn/ccd to create file named as user name and put something like (in this example, the ip is set to 10.8.0.101 for the user)
`ifconfig-push 10.8.0.101 255.255.255.0`
T

36
openvpn-install.sh
View file

@ -236,7 +236,7 @@ LimitNPROC=infinity" > /etc/systemd/system/openvpn-server@server.service.d/disab
systemctl enable --now firewalld.service
fi
# Get easy-rsa
easy_rsa_url='https://github.com/OpenVPN/easy-rsa/releases/download/v3.1.2/EasyRSA-3.1.2.tgz'
easy_rsa_url='https://github.com/OpenVPN/easy-rsa/releases/download/v3.1.3/EasyRSA-3.1.3.tgz'
mkdir -p /etc/openvpn/server/easy-rsa/
{ wget -qO- "$easy_rsa_url" 2>/dev/null || curl -sL "$easy_rsa_url" ; } | tar xz -C /etc/openvpn/server/easy-rsa/ --strip-components 1
chown -R root:root /etc/openvpn/server/easy-rsa/
@ -276,7 +276,9 @@ dh dh.pem
auth SHA512
tls-crypt tc.key
topology subnet
server 10.8.0.0 255.255.255.0" > /etc/openvpn/server/server.conf
client-config-dir /etc/openvpn/ccd
client-to-client
server 10.10.0.0 255.255.255.0" > /etc/openvpn/server/server.conf
# IPv6
if [[ -z "$ip6" ]]; then
echo 'push "redirect-gateway def1 bypass-dhcp"' >> /etc/openvpn/server/server.conf
@ -284,7 +286,7 @@ server 10.8.0.0 255.255.255.0" > /etc/openvpn/server/server.conf
echo 'server-ipv6 fddd:1194:1194:1194::/64' >> /etc/openvpn/server/server.conf
echo 'push "redirect-gateway def1 ipv6 bypass-dhcp"' >> /etc/openvpn/server/server.conf
fi
echo 'ifconfig-pool-persist ipp.txt' >> /etc/openvpn/server/server.conf
# echo 'ifconfig-pool-persist ipp.txt' >> /etc/openvpn/server/server.conf
# DNS
case "$dns" in
1|"")
@ -349,12 +351,12 @@ crl-verify crl.pem" >> /etc/openvpn/server/server.conf
# We don't use --add-service=openvpn because that would only work with
# the default port and protocol.
firewall-cmd --add-port="$port"/"$protocol"
firewall-cmd --zone=trusted --add-source=10.8.0.0/24
firewall-cmd --zone=trusted --add-source=10.10.0.0/24
firewall-cmd --permanent --add-port="$port"/"$protocol"
firewall-cmd --permanent --zone=trusted --add-source=10.8.0.0/24
firewall-cmd --permanent --zone=trusted --add-source=10.10.0.0/24
# Set NAT for the VPN subnet
firewall-cmd --direct --add-rule ipv4 nat POSTROUTING 0 -s 10.8.0.0/24 ! -d 10.8.0.0/24 -j SNAT --to "$ip"
firewall-cmd --permanent --direct --add-rule ipv4 nat POSTROUTING 0 -s 10.8.0.0/24 ! -d 10.8.0.0/24 -j SNAT --to "$ip"
firewall-cmd --direct --add-rule ipv4 nat POSTROUTING 0 -s 10.10.0.0/24 ! -d 10.10.0.0/24 -j SNAT --to "$ip"
firewall-cmd --permanent --direct --add-rule ipv4 nat POSTROUTING 0 -s 10.10.0.0/24 ! -d 10.10.0.0/24 -j SNAT --to "$ip"
if [[ -n "$ip6" ]]; then
firewall-cmd --zone=trusted --add-source=fddd:1194:1194:1194::/64
firewall-cmd --permanent --zone=trusted --add-source=fddd:1194:1194:1194::/64
@ -375,13 +377,13 @@ crl-verify crl.pem" >> /etc/openvpn/server/server.conf
Before=network.target
[Service]
Type=oneshot
ExecStart=$iptables_path -t nat -A POSTROUTING -s 10.8.0.0/24 ! -d 10.8.0.0/24 -j SNAT --to $ip
ExecStart=$iptables_path -t nat -A POSTROUTING -s 10.10.0.0/24 ! -d 10.10.0.0/24 -j SNAT --to $ip
ExecStart=$iptables_path -I INPUT -p $protocol --dport $port -j ACCEPT
ExecStart=$iptables_path -I FORWARD -s 10.8.0.0/24 -j ACCEPT
ExecStart=$iptables_path -I FORWARD -s 10.10.0.0/24 -j ACCEPT
ExecStart=$iptables_path -I FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
ExecStop=$iptables_path -t nat -D POSTROUTING -s 10.8.0.0/24 ! -d 10.8.0.0/24 -j SNAT --to $ip
ExecStop=$iptables_path -t nat -D POSTROUTING -s 10.10.0.0/24 ! -d 10.10.0.0/24 -j SNAT --to $ip
ExecStop=$iptables_path -D INPUT -p $protocol --dport $port -j ACCEPT
ExecStop=$iptables_path -D FORWARD -s 10.8.0.0/24 -j ACCEPT
ExecStop=$iptables_path -D FORWARD -s 10.10.0.0/24 -j ACCEPT
ExecStop=$iptables_path -D FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT" > /etc/systemd/system/openvpn-iptables.service
if [[ -n "$ip6" ]]; then
echo "ExecStart=$ip6tables_path -t nat -A POSTROUTING -s fddd:1194:1194:1194::/64 ! -d fddd:1194:1194:1194::/64 -j SNAT --to $ip6
@ -425,6 +427,8 @@ remote-cert-tls server
auth SHA512
cipher AES-256-CBC
ignore-unknown-option block-outside-dns
route-nopull
route 10.10.0.0 255.255.255.0
verb 3" > /etc/openvpn/server/client-common.txt
# Enable and start the OpenVPN service
systemctl enable --now openvpn-server@server.service
@ -519,14 +523,14 @@ else
port=$(grep '^port ' /etc/openvpn/server/server.conf | cut -d " " -f 2)
protocol=$(grep '^proto ' /etc/openvpn/server/server.conf | cut -d " " -f 2)
if systemctl is-active --quiet firewalld.service; then
ip=$(firewall-cmd --direct --get-rules ipv4 nat POSTROUTING | grep '\-s 10.8.0.0/24 '"'"'!'"'"' -d 10.8.0.0/24' | grep -oE '[^ ]+$')
ip=$(firewall-cmd --direct --get-rules ipv4 nat POSTROUTING | grep '\-s 10.10.0.0/24 '"'"'!'"'"' -d 10.10.0.0/24' | grep -oE '[^ ]+$')
# Using both permanent and not permanent rules to avoid a firewalld reload.
firewall-cmd --remove-port="$port"/"$protocol"
firewall-cmd --zone=trusted --remove-source=10.8.0.0/24
firewall-cmd --zone=trusted --remove-source=10.10.0.0/24
firewall-cmd --permanent --remove-port="$port"/"$protocol"
firewall-cmd --permanent --zone=trusted --remove-source=10.8.0.0/24
firewall-cmd --direct --remove-rule ipv4 nat POSTROUTING 0 -s 10.8.0.0/24 ! -d 10.8.0.0/24 -j SNAT --to "$ip"
firewall-cmd --permanent --direct --remove-rule ipv4 nat POSTROUTING 0 -s 10.8.0.0/24 ! -d 10.8.0.0/24 -j SNAT --to "$ip"
firewall-cmd --permanent --zone=trusted --remove-source=10.10.0.0/24
firewall-cmd --direct --remove-rule ipv4 nat POSTROUTING 0 -s 10.10.0.0/24 ! -d 10.10.0.0/24 -j SNAT --to "$ip"
firewall-cmd --permanent --direct --remove-rule ipv4 nat POSTROUTING 0 -s 10.10.0.0/24 ! -d 10.10.0.0/24 -j SNAT --to "$ip"
if grep -qs "server-ipv6" /etc/openvpn/server/server.conf; then
ip6=$(firewall-cmd --direct --get-rules ipv6 nat POSTROUTING | grep '\-s fddd:1194:1194:1194::/64 '"'"'!'"'"' -d fddd:1194:1194:1194::/64' | grep -oE '[^ ]+$')
firewall-cmd --zone=trusted --remove-source=fddd:1194:1194:1194::/64