openvpn WARNING: No server certificate verification method has been enabled
- by tmedtcom
I tried to install openvpn on debian squeez (server) and connect from my fedora 17 as (client). Here is my configuration:
server configuration
###cat server.conf
# Serveur TCP
** proto tcp**
port 1194
dev tun
# Cles et certificats
ca /etc/openvpn/easy-rsa/keys/ca.crt
cert /etc/openvpn/easy-rsa/keys/server.crt
key /etc/openvpn/easy-rsa/keys/server.key
dh /etc/openvpn/easy-rsa/keys/dh1024.pem
# Reseau
#Adresse virtuel du reseau vpn
server 192.170.70.0 255.255.255.0
#Cette ligne ajoute sur le client la route du reseau vers le serveur
push "route 192.168.1.0 255.255.255.0"
#Creer une route du server vers l'interface tun.
#route 192.170.70.0 255.255.255.0
# Securite
keepalive 10 120
#type d'encryptage des données
**cipher AES-128-CBC**
#activation de la compression
comp-lzo
#nombre maximum de clients autorisés
max-clients 10
#pas d'utilisateur et groupe particuliers pour l'utilisation du VPN
user nobody
group nogroup
#pour rendre la connexion persistante
persist-key
persist-tun
#Log d'etat d'OpenVPN
status /var/log/openvpn-status.log
#logs openvpnlog /var/log/openvpn.log
log-append /var/log/openvpn.log
#niveau de verbosité
verb 5
###cat client.conf
# Client
client
dev tun
[COLOR="Red"]proto tcp-client[/COLOR]
remote <my server wan IP> 1194
resolv-retry infinite
**cipher AES-128-CBC**
# Cles
ca ca.crt
cert client.crt
key client.key
# Securite
nobind
persist-key
persist-tun
comp-lzo
verb 3
Message from the host client (fedora 17) in the log file / var / log / messages:
Dec 6 21:56:00 GlobalTIC NetworkManager[691]: <info> Starting VPN service 'openvpn'...
Dec 6 21:56:00 GlobalTIC NetworkManager[691]: <info> VPN service 'openvpn' started (org.freedesktop.NetworkManager.openvpn), PID 7470
Dec 6 21:56:00 GlobalTIC NetworkManager[691]: <info> VPN service 'openvpn' appeared; activating connections
Dec 6 21:56:00 GlobalTIC NetworkManager[691]: <info> VPN plugin state changed: starting (3)
Dec 6 21:56:01 GlobalTIC NetworkManager[691]: <info> VPN connection 'Connexion VPN 1' (Connect) reply received.
Dec 6 21:56:01 GlobalTIC nm-openvpn[7472]: OpenVPN 2.2.2 x86_64-redhat-linux-gnu [SSL] [LZO2] [EPOLL] [PKCS11] [eurephia] built on Sep 5 2012
Dec 6 21:56:01 GlobalTIC nm-openvpn[7472]:[COLOR="Red"][U][B] WARNING: No server certificate verification method has been enabled.[/B][/U][/COLOR] See http://openvpn.net/howto.html#mitm for more info.
Dec 6 21:56:01 GlobalTIC nm-openvpn[7472]: NOTE: the current --script-security setting may allow this configuration to call user-defined scripts
Dec 6 21:56:01 GlobalTIC nm-openvpn[7472]:[COLOR="Red"] WARNING: file '/home/login/client/client.key' is group or others accessible[/COLOR]
Dec 6 21:56:01 GlobalTIC nm-openvpn[7472]: UDPv4 link local: [undef]
Dec 6 21:56:01 GlobalTIC nm-openvpn[7472]: UDPv4 link remote: [COLOR="Red"]<my server wan IP>[/COLOR]:1194
Dec 6 21:56:01 GlobalTIC nm-openvpn[7472]: [COLOR="Red"]read UDPv4 [ECONNREFUSED]: Connection refused (code=111)[/COLOR]
Dec 6 21:56:03 GlobalTIC nm-openvpn[7472]: [COLOR="Red"]read UDPv4[/COLOR] [ECONNREFUSED]: Connection refused (code=111)
Dec 6 21:56:07 GlobalTIC nm-openvpn[7472]: read UDPv4 [ECONNREFUSED]: Connection refused (code=111)
Dec 6 21:56:15 GlobalTIC nm-openvpn[7472]: read UDPv4 [ECONNREFUSED]: Connection refused (code=111)
Dec 6 21:56:31 GlobalTIC nm-openvpn[7472]: read UDPv4 [ECONNREFUSED]: Connection refused (code=111)
Dec 6 21:56:41 GlobalTIC NetworkManager[691]: <warn> VPN connection 'Connexion VPN 1' (IP Conf[/CODE]
ifconfig on server host(debian):
ifconfig
eth0 Link encap:Ethernet HWaddr 08:00:27:16:21:ac
inet addr:192.168.1.6 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:fe16:21ac/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:9059 errors:0 dropped:0 overruns:0 frame:0
TX packets:5660 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:919427 (897.8 KiB) TX bytes:1273891 (1.2 MiB)
tun0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
inet addr:192.170.70.1 P-t-P:192.170.70.2 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
ifconfig on the client host (fedora 17)
as0t0: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1500
inet 5.5.0.1 netmask 255.255.252.0 destination 5.5.0.1
unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 200 (UNSPEC)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2 bytes 321 (321.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
as0t1: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1500
inet 5.5.4.1 netmask 255.255.252.0 destination 5.5.4.1
unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 200 (UNSPEC)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2 bytes 321 (321.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
as0t2: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1500
inet 5.5.8.1 netmask 255.255.252.0 destination 5.5.8.1
unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 200 (UNSPEC)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2 bytes 321 (321.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
as0t3: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1500
inet 5.5.12.1 netmask 255.255.252.0 destination 5.5.12.1
unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 200 (UNSPEC)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2 bytes 321 (321.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
**p255p1**: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.1.2 netmask 255.255.255.0 broadcast 192.168.1.255
inet6 fe80::21d:baff:fe20:b7e6 prefixlen 64 scopeid 0x20<link>
ether 00:1d:ba:20:b7:e6 txqueuelen 1000 (Ethernet)
RX packets 4842070 bytes 3579798184 (3.3 GiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 3996158 bytes 2436442882 (2.2 GiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 16
p255p1 is label for eth0 interface
and
on the server :
root@hoteserver:/etc/openvpn# tree
.
+-- client
¦** +-- ca.crt
¦** +-- client.conf
¦** +-- client.crt
¦** +-- client.csr
¦** +-- client.key
¦** +-- client.ovpn
¦*
¦**
+-- easy-rsa
¦** +-- build-ca
¦** +-- build-dh
¦** +-- build-inter
¦** +-- build-key
¦** +-- build-key-pass
¦** +-- build-key-pkcs12
¦** +-- build-key-server
¦** +-- build-req
¦** +-- build-req-pass
¦** +-- clean-all
¦** +-- inherit-inter
¦** +-- keys
¦** ¦** +-- 01.pem
¦** ¦** +-- 02.pem
¦** ¦** +-- ca.crt
¦** ¦** +-- ca.key
¦** ¦** +-- client.crt
¦** ¦** +-- client.csr
¦** ¦** +-- client.key
¦** ¦** +-- dh1024.pem
¦** ¦** +-- index.txt
¦** ¦** +-- index.txt.attr
¦** ¦** +-- index.txt.attr.old
¦** ¦** +-- index.txt.old
¦** ¦** +-- serial
¦** ¦** +-- serial.old
¦** ¦** +-- server.crt
¦** ¦** +-- server.csr
¦** ¦** +-- server.key
¦** +-- list-crl
¦** +-- Makefile
¦** +-- openssl-0.9.6.cnf.gz
¦** +-- openssl.cnf
¦** +-- pkitool
¦** +-- README.gz
¦** +-- revoke-full
¦** +-- sign-req
¦** +-- vars
¦** +-- whichopensslcnf
+-- openvpn.log
+-- openvpn-status.log
+-- server.conf
+-- update-resolv-conf
on the client:
[login@hoteclient openvpn]$ tree
.
|-- easy-rsa
| |-- 1.0
| | |-- build-ca
| | |-- build-dh
| | |-- build-inter
| | |-- build-key
| | |-- build-key-pass
| | |-- build-key-pkcs12
| | |-- build-key-server
| | |-- build-req
| | |-- build-req-pass
| | |-- clean-all
| | |-- list-crl
| | |-- make-crl
| | |-- openssl.cnf
| | |-- README
| | |-- revoke-crt
| | |-- revoke-full
| | |-- sign-req
| | `-- vars
| `-- 2.0
| |-- build-ca
| |-- build-dh
| |-- build-inter
| |-- build-key
| |-- build-key-pass
| |-- build-key-pkcs12
| |-- build-key-server
| |-- build-req
| |-- build-req-pass
| |-- clean-all
| |-- inherit-inter
| |-- keys [error opening dir]
| |-- list-crl
| |-- Makefile
| |-- openssl-0.9.6.cnf
| |-- openssl-0.9.8.cnf
| |-- openssl-1.0.0.cnf
| |-- pkitool
| |-- README
| |-- revoke-full
| |-- sign-req
| |-- vars
| `-- whichopensslcnf
|-- keys -> ./easy-rsa/2.0/keys/
`-- server.conf
the problem source is cipher AES-128-CBC ,proto tcp-client or UDP or the interface p255p1 on fedora17 or file authentification ta.key is not found ????