tun0 doesn't show UP

moelharrak

Hi
I configured a VPN Server(VPS Ubuntu 16.04) using openvpn , however the interface tun doesn't show UP automatically , I need each time to run openvpn --config server.conf and not kill the session to make user authenticated.
this Is my configuration file
Server Configuration :
port 1194
proto tcp
dev tun
ca ca.crt
cert server.crt
key server.key
dh dh2048.pem
server 10.8.0.0 255.255.255.0
ifconfig-pool-persist ipp.txt
push "redirect-gateway def1 bypass-dhcp"
push "dhcp-option DNS 10.8.0.1"
push "dhcp-option DNS 8.8.8.8"
keepalive 10 120
comp-lzo
user nobody
group nobody
persist-key
persist-tun
status openvpn-status.log
verb 3

Configuration Client
client
dev tun
proto tcp
remote my-public-ip 1194
resolv-retry infinite
nobind
user nobody
group nobody
perssist-key
persist-tun
ca ca.crt
cert client.crt
key client.key
remote-cert-tls server
comp-lzo
verb 3

TinCanTech

moelharrak wrote the interface tun doesn't show UP automatically , I need each time to run openvpn --config server.conf and not kill the session

That is correct .. openvpn needs to be running in order to work.

moelharrak

That not correct , I have another vpn server installed in raspberry and the tun0 interface is always up even at the boot, and I don't need to run any command .
the "service openvpn status" command shows "Active" however "systemctl status openvpn@server" command shows the following error
openvpn@server.service - OpenVPN connection to server
Loaded: loaded (/lib/systemd/system/openvpn@.service; enabled; vendor preset: enabled)
Active: failed (Result: exit-code) since Tue 2017-12-19 18:57:38 UTC; 5min ago
Docs: man:openvpn(8)
https://community.openvpn.net/openvpn/wiki/Openvpn23ManPage
https://community.openvpn.net/openvpn/wiki/HOWTO
Process: 243 ExecStart=/usr/sbin/openvpn --daemon ovpn-%i --status /run/openvpn/%i.status 10 --cd /etc/openvp

Dec 19 18:57:38 vps45925 systemd[1]: Starting OpenVPN connection to server...
Dec 19 18:57:38 vps45925 ovpn-server[243]: OpenVPN 2.3.10 x86_64-pc-linux-gnu [SSL (OpenSSL)] [LZO] [EPOLL] [PK
Dec 19 18:57:38 vps45925 ovpn-server[243]: library versions: OpenSSL 1.0.2g 1 Mar 2016, LZO 2.08
Dec 19 18:57:38 vps45925 ovpn-server[243]: daemon() failed or unsupported: Resource temporarily unavailable (er
Dec 19 18:57:38 vps45925 ovpn-server[243]: Exiting due to fatal error
Dec 19 18:57:38 vps45925 systemd[1]: openvpn@server.service: Control process exited, code=exited status=1
Dec 19 18:57:38 vps45925 systemd[1]: Failed to start OpenVPN connection to server.
Dec 19 18:57:38 vps45925 systemd[1]: openvpn@server.service: Unit entered failed state.
Dec 19 18:57:38 vps45925 systemd[1]: openvpn@server.service: Failed with result 'exit-code'.

TinCanTech

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moelharrak

Hi thank you for your response
the openvpn --version shows
OpenVPN 2.3.10 x86_64-pc-linux-gnu [SSL (OpenSSL)] [LZO] [EPOLL] [PKCS11] [MH] [IPv6] built on Jun 22 2017
library versions: OpenSSL 1.0.2g 1 Mar 2016, LZO 2.08
Originally developed by James Yonan
Copyright (C) 2002-2010 OpenVPN Technologies, Inc. <sales@openvpn.net>
Compile time defines: enable_crypto=yes enable_crypto_ofb_cfb=yes enable_debug=yes enable_def_auth=yes enable_dependency_tracking=no enable_dlopen=unknown enable_dlopen_self=unknown enable_dlopen_self_static=unknown enable_fast_install=yes enable_fragment=yes enable_http_proxy=yes enable_iproute2=yes enable_libtool_lock=yes enable_lzo=yes enable_lzo_stub=no enable_maintainer_mode=no enable_management=yes enable_multi=yes enable_multihome=yes enable_pam_dlopen=no enable_password_save=yes enable_pedantic=no enable_pf=yes enable_pkcs11=yes enable_plugin_auth_pam=yes enable_plugin_down_root=yes enable_plugins=yes enable_port_share=yes enable_selinux=no enable_server=yes enable_shared=yes enable_shared_with_static_runtimes=no enable_silent_rules=no enable_small=no enable_socks=yes enable_ssl=yes enable_static=yes enable_strict=no enable_strict_options=no enable_systemd=yes enable_win32_dll=yes enable_x509_alt_username=yes with_crypto_library=openssl with_gnu_ld=yes with_mem_check=no with_plugindir='${prefix}/lib/openvpn' with_sysroot=no

- No I'm sure that I didn't configure that in networking and no one have access , it's get UP during installation and it's always UP at reboot