Onnowpurbo: /* Step 2 – Cek IP address */

2025-05-06T11:51:26Z

Step 2 – Cek IP address

Onnowpurbo: Created page with "Sumber: https://www.cyberciti.biz/faq/ubuntu-18-04-lts-set-up-openvpn-server-in-5-minutes/ ==Step 1 – Update system== Run, sudo apt update sudo apt upgrade ==Step 2..."

2025-05-06T11:49:33Z

Created page with "Sumber: https://www.cyberciti.biz/faq/ubuntu-18-04-lts-set-up-openvpn-server-in-5-minutes/ ==Step 1 – Update system== Run, sudo apt update sudo apt upgrade ==Step 2..."

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Sumber: https://www.cyberciti.biz/faq/ubuntu-18-04-lts-set-up-openvpn-server-in-5-minutes/

==Step 1 – Update system==

Run,

sudo apt update
sudo apt upgrade

==Step 2 – Cek IP address==

Pakai perintah,

ip a
ip a show eth0
ip a show enp0s3

==Step 3 – Download & run openvpn-install.sh script==

Pastikan tidak ada yang menggunakan repository ubuntu,

sudo rm -Rf /var/lib/dpkg/lock

Sebagai '''User Biasa''', Download,

sudo chmod 777 /usr/local/src
cd /usr/local/src/
wget https://git.io/vpn -O openvpn-install.sh
chmod +x openvpn-install.sh

Run,

sudo ./openvpn-install.sh

Akan keluar beberapa pertanyaan, tekan [ENTER].

'''NOTE:''' Jika kita experimen di dalam LAN, sebaiknya 'IP public' yang dipakai adalah IP private Ethernet Server OpenVPN.

Selesai instalasi, contoh sertifikat ~/client.ovpn akan di keluarkan.

Hack sedikit

sudo su
cp -Rf /etc/openvpn/server/* /etc/openvpn/

Run OpenVPN,

sudo systemctl stop openvpn@server # <--- stop server
sudo systemctl start openvpn@server # <--- start server
sudo systemctl restart openvpn@server # <--- restart server
sudo systemctl status openvpn@server # <--- get server status

==Step 4 – Connect an OpenVPN server using IOS/Android/Linux/Windows client==

Copykan file sertifikat client.ovpn ke client, misalnya menggunakan perintah,

scp vivek@104.20.187.5:~/client.ovpn .

===Linux Desktop: OpenVPN client configuration===

Install,

sudo apt -y install openvpn
sudo cp client.ovpn /etc/openvpn/client.ovpn

Coba sambungan dari sisi client

sudo openvpn --client --config /etc/openvpn/client.ovpn

Linux akan secara automatis tersambung ke computer dengan openvpn script

sudo systemctl start openvpn@client # <--- start client service

==Step 5 - Verify/test the connectivity==

Execute the following commands after connecting to OpenVPN server from your Linux desktop:

ping 10.8.0.1 # Ping to the OpenVPN server gateway
ip route # Make sure routing setup working
dig TXT +short o-o.myaddr.l.google.com @ns1.google.com #Must return public IP address of OpenVPN server

Beberapa catatan troubleshooting OpenVPN & Client

Cek OpenVPN server for errors:

journalctl --identifier ovpn-server

Cek Filewall Rules

cat /etc/rc.local

#!/bin/sh -e
iptables -t nat -A POSTROUTING -s 10.8.0.0/24 ! -d 10.8.0.0/24 -j SNAT --to 172.26.6.74
exit 0

Alternatif lain, run iptables command & sysctl command untuk verifikasi NAT rule setup

sudo iptables -t nat -L -n -v
sysctl net.ipv4.ip_forward

Insert rules ke /etc/rc.local (kalau belum di insert)

sudo sh /etc/rc.local
sudo sysctl -w net.ipv4.ip_forward=1

Is OpenVPN server running and port is open? Use the ss command or netstat command and pidof command/ps command:

$ netstat -tulpn | grep :1194 ## 1194 is the openvpn server port ##
$ ss -tulpn | grep :1194 ## 1194 is the openvpn server port ##
$ ps aux | grep openvpn ## is the openvpn server running? ##
$ ps -C openvpn ## is the openvpn server running? ##
$ pidof openvpn ## find the openvpn server PID ##

Verify that OpenVPN server runnign and Port is Open on ubuntu Linux
If not running, restart the OpenVPN server:
$ sudo systemctl restart openvpn@server

Look out for errors:
$ sudo systemctl status openvpn@server

Can the Linux desktop client connect to the OpenVPN server machine? First you need to run a simple test to see if the OpenVPN server port (UDP 1194) accepts connections:
$ nc -vu 104.20.187.5 1194
Connection to 104.20.187.5 1194 port [udp/openvpn] succeeded!

If not connected it means either a Linux desktop firewall or your router is blocking access to server. Make sure both client and server using same protocol and port, e.g. UDP port 1194.

==Conclusion==

Congratulations. You successfully set up an OpenVPN server on Ubuntu Linux 18.04 LTS server running in the cloud. See the OpenVPN website here and Ubuntu page here for additional information.

==Youtube==

* [https://youtu.be/qb07-Lpd71M YOUTUBE: Membuat Sambungan Server - OpenVPN - Cloud - Mikrotik - Kali]

==Referensi==

* https://www.cyberciti.biz/faq/ubuntu-18-04-lts-set-up-openvpn-server-in-5-minutes/

==Pranala Menarik==

* [[OpenVPN: IPv4 /32 single client]]
* [[OpenVPN: IPv4 /32 multi-client]]
* [[OpenVPN: IPv4 routed LAN]]
* [[OpenVPN: IPv4 routed 2 LAN]]
* [[OpenVPN: IPv6 /128 single client]]
* [[OpenVPN: IPv6 routed LAN]]
* [[OpenVPN: IPv6 routed 2 LAN]]

* [[IPv6: OpenVPN: Ubuntu roadwarrior]]
* [[OpenVPN: Simple Server using Script]]
* [[OpenVPN: Free VPN untuk Ubuntu]]
* [[Instalasi OpenVPN]]
* [[Instalasi OpenVPN Client di Linux]]
* [[Capture Screen Proses Instalasi OpenVPN di Windows]]
* [[Instalasi OpenVPN di Windows]]
* [[WNDW: OpenVPN]]
* [[OpenVPN: Instalasi di Ubuntu 16.04]]
* [[OpenVPN: Instalasi di Ubuntu 18.04]]
* [[OpenVPN: Briding dan Routing]]

← Older revision		Revision as of 11:51, 6 May 2025
Line 14:		Line 14:

	ip a		ip a
−	~~ip a show eth0~~
	ip a show enp0s3		ip a show enp0s3

OpenVPN: Instalasi di Ubuntu 24.04 - Revision history

Onnowpurbo: /* Step 2 – Cek IP address */

Onnowpurbo: Created page with "Sumber: https://www.cyberciti.biz/faq/ubuntu-18-04-lts-set-up-openvpn-server-in-5-minutes/ ==Step 1 – Update system== Run, sudo apt update sudo apt upgrade ==Step 2..."