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| | ==Cek IP Publik Kita== |
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| I am a new Ubuntu Linux server user. How do I setup an OpenVPN Server on Ubuntu Linux version 14.04 or 16.04/18.04 LTS server to shield my browsing activity from bad guys on public Wi-Fi, and more?
| | Jika Server tersambung langsung ke Internet, dapat menggunakan |
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| OpenVPN is a full-featured SSL VPN (virtual private network). It implements OSI layer 2 or 3 secure network extension using the SSL/TLS protocol. It is an open source software and distributed under the GNU GPL. A VPN allows you to connect securely to an insecure public network such as wifi network at the airport or hotel. VPN is also required to access your corporate or enterprise or home server resources. You can bypass geo-blocked site and increase your privacy or safety online. This tutorial provides step-by-step instructions for configuring an OpenVPN “road warrior” server on Ubuntu Linux v14.04/16.04 LTS version including ufw/iptables firewall configuration. The steps are as follows:
| | ip addr show eth0 |
| | ip addr show enp0s3 |
| | ip a |
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| Find and note down your public IP address
| | atau menggunakan |
| Download openvpn-install.sh script
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| Run openvpn-install.sh to install OpenVPN server
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| Connect an OpenVPN server using IOS/Android/Linux/Windows client
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| Verify your connectivity
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| ==Find your public IP address==
| | dig TXT +short o-o.myaddr.l.google.com @ns1.google.com |
| | host myip.opendns.com resolver1.opendns.com |
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| Use any one of the following command to find out your IPv4 public address. If your internface name is eth0 or eth1, enter:
| | ==Download openvpn-install.sh script== |
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| $ ip addr show eth0
| | Download |
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| OR
| | wget https://git.io/vpn -O openvpn-install.sh |
| $ ip addr show eth1 | | openvpn-install.sh |
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| Or use the host command or dig command as follows:
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| $ host myip.opendns.com resolver1.opendns.com
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| OR
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| $ dig TXT +short o-o.myaddr.l.google.com @ns1.google.com
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| Sample outputs:
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| Fig.01: Find out your public IPv4 address using the CLI | |
| Fig.01: Find out your public IPv4 address using the CLI
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| Note down the public IP address 139.59.1.155 i.e. public ip address of your OpenVPN server.
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| Download openvpn-install.sh script to set up OpenVPN server in 5 minutes on Ubuntu
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| Type the following wget command or curl command:
| | Install OpenVPN, run, |
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| $ wget https://git.io/vpn -O openvpn-install.sh | | sudo bash openvpn-install.sh |
| openvpn-install.sh
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| Run openvpn-install.sh to install OpenVPN server
| | ==Setup Firewall== |
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| $ sudo bash openvpn-install.sh
| | Kadang konfigurasi Firewall bisa di lihat di /etc/rc.local file: |
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| That is all. Your OpenVPN server has been configured and ready to use. You can see added firewall rules /etc/rc.local file:
| | cat /etc/rc.local |
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| $ cat /etc/rc.local
| | Contoh Firewall: |
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| Sample outputs:
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| iptables -I FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT | | iptables -I FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT |
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| iptables -t nat -A POSTROUTING -s 10.8.0.0/24 -j SNAT --to 139.59.1.155 | | iptables -t nat -A POSTROUTING -s 10.8.0.0/24 -j SNAT --to 139.59.1.155 |
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| You can view your openvpn server config file generated by the script as follows (do not edit this file by hand):
| | Contoh konfigurasi Server openvpn, |
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| $ sudo more /etc/openvpn/server.conf | | sudo more /etc/openvpn/server.conf |
| $ sudo vi /etc/openvpn/server.conf | | sudo vi /etc/openvpn/server.conf |
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| Sample outputs:
| | Run / Control OpenVPN Server, |
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| port 1194 | | sudo systemctl stop openvpn@server |
| proto udp
| | sudo systemctl start openvpn@server |
| dev tun
| | sudo systemctl restart openvpn@server |
| sndbuf 0
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| rcvbuf 0
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| ca ca.crt
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| cert server.crt
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| key server.key | |
| dh dh.pem
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| tls-auth ta.key 0
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| topology subnet
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| server 10.8.0.0 255.255.255.0 | |
| ifconfig-pool-persist ipp.txt
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| push "redirect-gateway def1 bypass-dhcp"
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| push "dhcp-option DNS 8.8.8.8"
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| push "dhcp-option DNS 8.8.4.4"
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| keepalive 10 120
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| cipher AES-128-CBC
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| comp-lzo
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| user nobody
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| group nogroup
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| persist-key
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| persist-tun
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| status openvpn-status.log
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| verb 3
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| crl-verify crl.pem
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| How do I start/stop/restart OpenVPN server on Ubuntu Linux 16.04/18.04 LTS?
| | sudo /etc/init.d/openvpn stop |
| | sudo /etc/init.d/openvpn start |
| | sudo /etc/init.d/openvpn restart |
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| Type the following command stop the OpenVPN service:
| | ==ufw firewall rules (optional)== |
| $ sudo systemctl stop openvpn@server
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| Type the following command start the OpenVPN service:
| | Edit /etc/ufw/before.rules, |
| $ sudo systemctl start openvpn@server
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| Type the following command restart the OpenVPN service:
| | sudo vi /etc/ufw/before.rules |
| $ sudo systemctl restart openvpn@server | |
| How do I start/stop/restart OpenVPN server on Ubuntu Linux 14.04 LTS?
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| Type the following command stop the OpenVPN service:
| | sudo ufw allow 1194/udp |
| $ sudo /etc/init.d/openvpn stop | | sudo ufw allow 22/tcp |
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| Type the following command start the OpenVPN service:
| | Edit /etc/ufw/sysctl.conf file, |
| $ sudo /etc/init.d/openvpn start
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| Type the following command restart the OpenVPN service:
| | sudo vi /etc/ufw/sysctl.conf |
| $ sudo /etc/init.d/openvpn restart | |
| {Optional} How to configure and use the ufw firewall rules for the OpenVPN server
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| The default rules added to the /etc/rc.local file should work out of the box. However, if you have complicated firewall settings or prefer ufw to control all firewall settings on Ubuntu Linux server, try the following. First, edit the /etc/rc.local file using a text editor and comment out all firewall rules added by the script. Type the following ufw command to open port 1194 and 22 (ssh):
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| $ sudo ufw allow 1194/udp
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| $ sudo ufw allow 22/tcp
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| Edit the file /etc/ufw/before.rules, enter:
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| $ sudo vi /etc/ufw/before.rules
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| Save and close the file. Next edit the /etc/ufw/sysctl.conf file, enter:
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| $ sudo vi /etc/ufw/sysctl.conf
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| Find and uncomment the following line to allow this host to route packets between interfaces
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| net/ipv4/ip_forward=1 | | net/ipv4/ip_forward=1 |
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| Save and close the file. Enable ufw or reload if already running:
| | Enable / Reload ufw, |
| $ sudo ufw enable
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| | sudo ufw enable |
| OR | | OR |
| $ sudo ufw reload | | sudo ufw reload |
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| Verify new firewall rules:
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| $ sudo ufw status
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| $ sudo iptables -t nat -L -n -v
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| $ sudo iptables -L FORWARD -n -v
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| $ sudo iptables -L ufw-before-forward -n -v
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| ==Client configuration==
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| On server your will find a client configuration file called ~/iphone.ovpn. All you have to do is copy this file to your local desktop using the scp and provide this file to your OpenVPN client to connect:
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| $ scp vivek@139.59.1.155:~/iphone.ovpn .
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| Next, you need to download OpenVPN client as per your operating system:
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| Download OpenVPN client for Apple IOS version 6.x or above and install it.
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| Download OpenVPN client for Android and install it.
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| Download OpenVPN client for Apple MacOS (OS X) and install it.
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| Download OpenVPN client for Windows 8/10 and install it.
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| MacOS/OS X OpenVPN client configuration
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| Just double click on iphone.ovpn file and it will open in your tunnelblick client > Click on the “Only me” to install it.
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| Fig.03: MacOS / OS X openvpn client configuration
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| Fig.03: MacOS / OS X openvpn client configuration
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| Once installed click on Connect button and you will be online. Use the following command on MacOS client to verify that your public IP changed to the VPN server IP:
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| $ dig TXT +short o-o.myaddr.l.google.com @ns1.google.com
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| You can ping to OpenVPN server private IP:
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| $ ping 10.8.0.1
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| Linux OpenVPN client configuration
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| First, install the openvpn client, enter:
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| $ sudo yum install openvpn
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| OR
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| $ sudo apt install openvpn
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| Next, copy iphone.ovpn as follows:
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| $ sudo cp iphone.ovpn /etc/openvpn/client.conf
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| Test connectivity from the CLI:
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| $ sudo openvpn --client --config /etc/openvpn/client.conf
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| Your Linux system will automatically connect when computer restart using /etc/init.d/openvpn script:
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| $ sudo /etc/init.d/openvpn start
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| For systemd based system, use the following command:
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| $ sudo systemctl start openvpn@client
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| Test the connectivity:
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| $ ping 10.8.0.1 #Ping to OpenVPN server gateway
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| $ ip route #Make sure routing setup
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| $ dig TXT +short o-o.myaddr.l.google.com @ns1.google.com #Make sure your public IP set to OpenVPN server
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| FreeBSD OpenVPN client configuration
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| First, install the openvpn client, enter:
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| $ sudo pkg install openvpn
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| Next, copy iphone.ovpn as follows:
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| $ mkdir -p /usr/local/etc/openvpn/
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| $ sudo cp iphone.ovpn /usr/local/etc/openvpn/client.conf
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| Edit /etc/rc.conf and add the following:
| | Verify, |
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| openvpn_enable="YES" | | sudo ufw status |
| openvpn_configfile="/usr/local/etc/openvpn/client.conf" | | sudo iptables -t nat -L -n -v |
| | sudo iptables -L FORWARD -n -v |
| | sudo iptables -L ufw-before-forward -n -v |
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| Start the OpenVPN service:
| | ==Menambah CLIENT== |
| $ sudo /usr/local/etc/rc.d/openvpn start
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| Verify it:
| | Untuk menambah Client OpenVPN, jalankan ulang, |
| $ ping 10.8.0.1 #Ping to OpenVPN server gateway
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| $
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| $ netstat -nr #Make sure routing setup
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| $
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| $ drill myip.opendns.com @resolver1.opendns.com #Make sure your public IP set to OpenVPN server
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| How do I add a new client?
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| For demo purpose I added a new device called iphone. Let us add one more device called googlephone by running the script again:
| | sudo bash openvpn-install.sh |
| $ sudo bash openvpn-install.sh | |
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| Sample outputs:
| | Keluaran: |
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| Looks like OpenVPN is already installed | | Looks like OpenVPN is already installed |
| | |
| | What do you want to do? |
| | 1) Add a cert for a new user |
| | 2) Revoke existing user cert |
| | 3) Remove OpenVPN |
| | 4) Exit |
| | Select an option [1-4]: |
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| What do you want to do?
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| 1) Add a cert for a new user
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| 2) Revoke existing user cert
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| 3) Remove OpenVPN
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| 4) Exit
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| Select an option [1-4]:
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| | Pilih [1] untuk menambahkan Client OpenVPN. |
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| ==Referensi== | | ==Referensi== |
sumber: https://www.cyberciti.biz/faq/howto-setup-openvpn-server-on-ubuntu-linux-14-04-or-16-04-lts/
Cek IP Publik Kita
Jika Server tersambung langsung ke Internet, dapat menggunakan
ip addr show eth0
ip addr show enp0s3
ip a
atau menggunakan
dig TXT +short o-o.myaddr.l.google.com @ns1.google.com
host myip.opendns.com resolver1.opendns.com
Download openvpn-install.sh script
Download
wget https://git.io/vpn -O openvpn-install.sh
openvpn-install.sh
Install OpenVPN, run,
sudo bash openvpn-install.sh
Setup Firewall
Kadang konfigurasi Firewall bisa di lihat di /etc/rc.local file:
cat /etc/rc.local
Contoh Firewall:
iptables -I FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
iptables -I FORWARD -s 10.8.0.0/24 -j ACCEPT
iptables -I INPUT -p udp --dport 1194 -j ACCEPT
iptables -t nat -A POSTROUTING -s 10.8.0.0/24 -j SNAT --to 139.59.1.155
Contoh konfigurasi Server openvpn,
sudo more /etc/openvpn/server.conf
sudo vi /etc/openvpn/server.conf
Run / Control OpenVPN Server,
sudo systemctl stop openvpn@server
sudo systemctl start openvpn@server
sudo systemctl restart openvpn@server
sudo /etc/init.d/openvpn stop
sudo /etc/init.d/openvpn start
sudo /etc/init.d/openvpn restart
ufw firewall rules (optional)
Edit /etc/ufw/before.rules,
sudo vi /etc/ufw/before.rules
sudo ufw allow 1194/udp
sudo ufw allow 22/tcp
Edit /etc/ufw/sysctl.conf file,
sudo vi /etc/ufw/sysctl.conf
net/ipv4/ip_forward=1
Enable / Reload ufw,
sudo ufw enable
OR
sudo ufw reload
Verify,
sudo ufw status
sudo iptables -t nat -L -n -v
sudo iptables -L FORWARD -n -v
sudo iptables -L ufw-before-forward -n -v
Menambah CLIENT
Untuk menambah Client OpenVPN, jalankan ulang,
sudo bash openvpn-install.sh
Keluaran:
Looks like OpenVPN is already installed
What do you want to do?
1) Add a cert for a new user
2) Revoke existing user cert
3) Remove OpenVPN
4) Exit
Select an option [1-4]:
Pilih [1] untuk menambahkan Client OpenVPN.
Referensi
Pranala Menarik
