[Jetson Nano] OpenVPN 클라이언트로 VPN 연결

Jetson Nano에서 OpenVPN 클라이언트로 VPN 연결을 하는 방법은 아래와 같다.

사용 환경

• Jetson Nano (Super)
• JetPack 6.2
• Ubuntu 22.04

OpenVPN 클라이언트 버전 확인

아래의 명령어를 터미널에 입력하여 설치된 OpenVPN 클라이언트 버전을 확인한다.

openvpn --version

OpenVPN 클라이언트 버전이 나타난 화면

 

OpenVPN 클라이언트 설정 파일 생성

아래의 명령어를 입력하여 접속하고자 하는 OpenVPN 서버의 정보를 입력하는 화면에 진입한다.

sudo vi /etc/openvpn/vpn_config.ovpn

vi 편집기로 OpenVPN 서버 설정 파일을 생성하는 화면

아래의 OpenVPN의 설정 예시를 참고하여 서버 정보를 입력한다.

##############################################
# Sample client-side OpenVPN 2.6 config file #
# for connecting to multi-client server.     #
#                                            #
# This configuration can be used by multiple #
# clients, however each client should have   #
# its own cert and key files.                #
#                                            #
# On Windows, you might want to rename this  #
# file so it has a .ovpn extension           #
##############################################

# Specify that we are a client and that we
# will be pulling certain config file directives
# from the server.
client

# Use the same setting as you are using on
# the server.
# On most systems, the VPN will not function
# unless you partially or fully disable
# the firewall for the TUN/TAP interface.
;dev tap
dev tun

# Windows needs the TAP-Win32 adapter name
# from the Network Connections panel
# if you have more than one.  On XP SP2,
# you may need to disable the firewall
# for the TAP adapter.
;dev-node MyTap

# Are we connecting to a TCP or
# UDP server?  Use the same setting as
# on the server.
;proto tcp
proto udp

# The hostname/IP and port of the server.
# You can have multiple remote entries
# to load balance between the servers.
remote my-server-1 1194
;remote my-server-2 1194

# Choose a random host from the remote
# list for load-balancing.  Otherwise
# try hosts in the order specified.
;remote-random

# Keep trying indefinitely to resolve the
# host name of the OpenVPN server.  Very useful
# on machines which are not permanently connected
# to the internet such as laptops.
resolv-retry infinite

# Most clients don't need to bind to
# a specific local port number.
nobind

# Downgrade privileges after initialization (non-Windows only)
;user openvpn
;group openvpn

# Try to preserve some state across restarts.
persist-tun

# If you are connecting through an
# HTTP proxy to reach the actual OpenVPN
# server, put the proxy server/IP and
# port number here.  See the man page
# if your proxy server requires
# authentication.
;http-proxy-retry # retry on connection failures
;http-proxy [proxy server] [proxy port #]

# Wireless networks often produce a lot
# of duplicate packets.  Set this flag
# to silence duplicate packet warnings.
;mute-replay-warnings

# SSL/TLS parms.
# See the server config file for more
# description.  It's best to use
# a separate .crt/.key file pair
# for each client.  A single ca
# file can be used for all clients.
ca ca.crt
cert client.crt
key client.key

# Verify server certificate by checking that the
# certificate has the correct key usage set.
# This is an important precaution to protect against
# a potential attack discussed here:
#  http://openvpn.net/howto.html#mitm
#
# To use this feature, you will need to generate
# your server certificates with the keyUsage set to
#   digitalSignature, keyEncipherment
# and the extendedKeyUsage to
#   serverAuth
# EasyRSA can do this for you.
remote-cert-tls server

# Allow to connect to really old OpenVPN versions
# without AEAD support (OpenVPN 2.3.x or older)
# This adds AES-256-CBC as fallback cipher and
# keeps the modern ciphers as well.
;data-ciphers AES-256-GCM:AES-128-GCM:?CHACHA20-POLY1305:AES-256-CBC

# If a tls-auth key is used on the server
# then every client must also have the key.
;tls-auth ta.key 1

# Set log file verbosity.
verb 3

# Silence repeating messages
;mute 20

OpenVPN 서버 설정 입력 화면

OpenVPN 서버로 연결 요청

아래의 명령어를 입력하여 입력한 서버 정보로 OpenVPN 접속을 시도한다.

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

아래의 화면처럼 나타난다면 OpenVPN 접속이 잘 된 것이다.

OpenVPN 접속이 완료된 화면

참고문서

1. "Creating configuration files for server and clients", OpenVPN. @원문보기
2. "client.conf", OpenVPN, GitHub. @원문보기