Eu quero me conectar do meu PC com Windows 7 Enterprise ao servidor OpenVPN. Eu tenho o cliente OpenVPN versão 2.1.1 instalado.
Eu tenho atualmente dois problemas:
1) Depois que eu inicio o OpenVPN GUI e conecto o processo de conexão, tudo vai bem. Mas imediatamente depois que eu recebo "Initialization Sequence Completed" meu adaptador de rede Wifi de repente parece estar desabilitado O_O Naturalmente, isso quebra toda a conectividade da Internet, incluindo o túnel VPN, então no log parece:
...
Sat Mar 09 11:28:18 2013 Initialization Sequence Completed
Sat Mar 09 11:28:25 2013 Connection reset, restarting [0]
Sat Mar 09 11:28:25 2013 TCP/UDP: Closing socket
Sat Mar 09 11:28:25 2013 SIGUSR1[soft,connection-reset] received, process restarting
Sat Mar 09 11:28:25 2013 Restart pause, 5 second(s)
...
Se eu ativar manualmente o adaptador de rede sem fio através do painel de controle Conexões de rede, o OpenVPN se conectará pela segunda vez (pelo menos, ele diz que "Initialization Sequence Completed" e ícone na bandeja fica verde), mas aparece outro problema:
2) Depois de me conectar com sucesso pela segunda vez, obtenho zero conectividade a todos os hosts VPN. Eu suspeito que isso envolve roteamento de alguma forma como quando eu tento tracert um host que está por trás da VPN, o rastreamento passa pelo roteador principal WiFi, o que é definitivamente errado.
Por último, mas não menos importante, o problema é constante e reprodutível. O primeiro problema acontece sempre, mas o segundo acontece apenas em ~ 70% dos casos, o que significa que às vezes eu posso conectar e trabalhar muito bem a partir da segunda tentativa.
Eu tenho outro laptop - também o Windows 7, mora na mesma rede WiFi, mesma versão do OpenVPN - que se conecta perfeitamente bem (?!).
Alguém tem o mesmo comportamento? Alguma pista?
UPD
Solução experimentada com a exclusão de adaptadores de rede de OpenVPN: O cliente x64 do Windows 7 não pode ver a LAN remota, mas o cliente XP pode . Trabalhado uma vez após a exclusão de todos os adaptadores Microsoft ISATAP xxx , mas apenas durou até a reinicialização. A segunda vez não funcionou, então acho que foi pura coincidência com outra coisa.
UPD2: logs detalhados
Quando acabei de reiniciar meu PC, a tabela de roteamento se parece com isso:
===========================================================================
Interface List
17...00 ff ca 1c 39 86 ......TAP-Win32 Adapter V9
13...20 16 d8 91 32 c4 ......Bluetooth Device (Personal Area Network)
12...84 3a 4b 12 44 f8 ......Intel(R) Centrino(R) Advanced-N 6205
11...e0 db 55 e9 c0 17 ......Intel(R) 82579LM Gigabit Network Connection
1...........................Software Loopback Interface 1
18...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter
19...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #2
16...00 00 00 00 00 00 00 e0 Teredo Tunneling Pseudo-Interface
===========================================================================
IPv4 Route Table
===========================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 192.168.1.1 192.168.1.11 25
127.0.0.0 255.0.0.0 On-link 127.0.0.1 306
127.0.0.1 255.255.255.255 On-link 127.0.0.1 306
127.255.255.255 255.255.255.255 On-link 127.0.0.1 306
192.168.1.0 255.255.255.0 On-link 192.168.1.11 281
192.168.1.11 255.255.255.255 On-link 192.168.1.11 281
192.168.1.255 255.255.255.255 On-link 192.168.1.11 281
224.0.0.0 240.0.0.0 On-link 127.0.0.1 306
224.0.0.0 240.0.0.0 On-link 192.168.1.11 281
255.255.255.255 255.255.255.255 On-link 127.0.0.1 306
255.255.255.255 255.255.255.255 On-link 192.168.1.11 281
===========================================================================
Persistent Routes:
None
192.168.1.1 é meu roteador WiFi. Então eu inicio o OpenVPN GUI com privilégios de administrador e obtenho o seguinte:
Tue Mar 12 22:01:16 2013 OpenVPN 2.2.2 Win32-MSVC++ [SSL] [LZO2] [PKCS11] built on Dec 15 2011
Tue Mar 12 22:01:16 2013 WARNING: No server certificate verification method has been enabled. See http://openvpn.net/howto.html#mitm for more info.
Tue Mar 12 22:01:16 2013 NOTE: OpenVPN 2.1 requires '--script-security 2' or higher to call user-defined scripts or executables
Tue Mar 12 22:01:16 2013 LZO compression initialized
Tue Mar 12 22:01:16 2013 Control Channel MTU parms [ L:1544 D:140 EF:40 EB:0 ET:0 EL:0 ]
Tue Mar 12 22:01:16 2013 Socket Buffers: R=[8192->8192] S=[8192->8192]
Tue Mar 12 22:01:16 2013 Data Channel MTU parms [ L:1544 D:1450 EF:44 EB:135 ET:0 EL:0 AF:3/1 ]
Tue Mar 12 22:01:16 2013 Local Options hash (VER=V4): '69109d17'
Tue Mar 12 22:01:16 2013 Expected Remote Options hash (VER=V4): 'c0103fa8'
Tue Mar 12 22:01:16 2013 Attempting to establish TCP connection with <server address and port>
Tue Mar 12 22:01:17 2013 TCP connection established with <server address and port>
Tue Mar 12 22:01:17 2013 TCPv4_CLIENT link local: [undef]
Tue Mar 12 22:01:17 2013 TCPv4_CLIENT link remote: <server address and port>
Tue Mar 12 22:01:17 2013 TLS: Initial packet from <server address and port>, sid=c2fbe2fc 7ac9518f
Tue Mar 12 22:01:19 2013 VERIFY OK: depth=1, <key params>
Tue Mar 12 22:01:19 2013 VERIFY OK: depth=0, <key params>
Tue Mar 12 22:01:23 2013 Data Channel Encrypt: Cipher 'BF-CBC' initialized with 128 bit key
Tue Mar 12 22:01:23 2013 Data Channel Encrypt: Using 160 bit message hash 'SHA1' for HMAC authentication
Tue Mar 12 22:01:23 2013 Data Channel Decrypt: Cipher 'BF-CBC' initialized with 128 bit key
Tue Mar 12 22:01:23 2013 Data Channel Decrypt: Using 160 bit message hash 'SHA1' for HMAC authentication
Tue Mar 12 22:01:23 2013 Control Channel: TLSv1, cipher TLSv1/SSLv3 DHE-RSA-AES256-SHA, 2048 bit RSA
Tue Mar 12 22:01:23 2013 [New_dot_server] Peer Connection Initiated with <server address and port>
Tue Mar 12 22:01:25 2013 SENT CONTROL [New_dot_server]: 'PUSH_REQUEST' (status=1)
Tue Mar 12 22:01:26 2013 PUSH: Received control message: 'PUSH_REPLY,route 172.16.0.0 255.255.255.0,topology net30,ping 10,ping-restart 120,ifconfig 172.16.0.22 172.16.0.21'
Tue Mar 12 22:01:26 2013 OPTIONS IMPORT: timers and/or timeouts modified
Tue Mar 12 22:01:26 2013 OPTIONS IMPORT: --ifconfig/up options modified
Tue Mar 12 22:01:26 2013 OPTIONS IMPORT: route options modified
Tue Mar 12 22:01:26 2013 ROUTE default_gateway=192.168.1.1
Tue Mar 12 22:01:26 2013 TAP-WIN32 device [Local Area Connection 2] opened: \.\Global\{CA1C3986-D7B0-4F47-80BD-8E8C6F671C1D}.tap
Tue Mar 12 22:01:26 2013 TAP-Win32 Driver Version 9.9
Tue Mar 12 22:01:26 2013 TAP-Win32 MTU=1500
Tue Mar 12 22:01:26 2013 Notified TAP-Win32 driver to set a DHCP IP/netmask of 172.16.0.22/255.255.255.252 on interface {CA1C3986-D7B0-4F47-80BD-8E8C6F671C1D} [DHCP-serv: 172.16.0.21, lease-time: 31536000]
Tue Mar 12 22:01:26 2013 Successful ARP Flush on interface [17] {CA1C3986-D7B0-4F47-80BD-8E8C6F671C1D}
neste momento, a conexão Wi-Fi é interrompida e o adaptador WiFi é exibido como desativado no Painel de controle - > Centro de rede e compartilhamento - > Alterar as propriedades do adaptador. No log da VPN, ele é exibido como:
Tue Mar 12 22:01:27 2013 Connection reset, restarting [-1]
Tue Mar 12 22:01:27 2013 TCP/UDP: Closing socket
Tue Mar 12 22:01:27 2013 SIGUSR1[soft,connection-reset] received, process restarting
Tue Mar 12 22:01:27 2013 Restart pause, 5 second(s)
Tue Mar 12 22:01:32 2013 WARNING: No server certificate verification method has been enabled. See http://openvpn.net/howto.html#mitm for more info.
Tue Mar 12 22:01:32 2013 NOTE: OpenVPN 2.1 requires '--script-security 2' or higher to call user-defined scripts or executables
Tue Mar 12 22:01:32 2013 Re-using SSL/TLS context
Tue Mar 12 22:01:32 2013 LZO compression initialized
Tue Mar 12 22:01:32 2013 Control Channel MTU parms [ L:1544 D:140 EF:40 EB:0 ET:0 EL:0 ]
Tue Mar 12 22:01:32 2013 Socket Buffers: R=[8192->8192] S=[8192->8192]
Tue Mar 12 22:01:32 2013 RESOLVE: Cannot resolve host address: <server domain name>: [NO_DATA] The requested name is valid but does not have an IP address.
Tue Mar 12 22:01:32 2013 Data Channel MTU parms [ L:1544 D:1450 EF:44 EB:135 ET:0 EL:0 AF:3/1 ]
Tue Mar 12 22:01:32 2013 Local Options hash (VER=V4): '69109d17'
Tue Mar 12 22:01:32 2013 Expected Remote Options hash (VER=V4): 'c0103fa8'
Tue Mar 12 22:01:32 2013 RESOLVE: Cannot resolve host address: <server domain name>: [NO_DATA] The requested name is valid but does not have an IP address.
Tue Mar 12 22:01:37 2013 RESOLVE: Cannot resolve host address: <server domain name>: [NO_DATA] The requested name is valid but does not have an IP address.
Tue Mar 12 22:01:42 2013 RESOLVE: Cannot resolve host address: <server domain name>: [NO_DATA] The requested name is valid but does not have an IP address.
...
Neste ponto, o adaptador WiFi está desativado. Tabela de roteamento:
IPv4 Route Table
===========================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
127.0.0.0 255.0.0.0 On-link 127.0.0.1 306
127.0.0.1 255.255.255.255 On-link 127.0.0.1 306
127.255.255.255 255.255.255.255 On-link 127.0.0.1 306
172.16.0.20 255.255.255.252 On-link 172.16.0.22 286
172.16.0.22 255.255.255.255 On-link 172.16.0.22 286
172.16.0.23 255.255.255.255 On-link 172.16.0.22 286
224.0.0.0 240.0.0.0 On-link 127.0.0.1 306
224.0.0.0 240.0.0.0 On-link 172.16.0.22 286
255.255.255.255 255.255.255.255 On-link 127.0.0.1 306
255.255.255.255 255.255.255.255 On-link 172.16.0.22 286
===========================================================================
Persistent Routes:
None
Depois eu vou para as configurações do adaptador e habilito manualmente o adaptador WiFi. No log da VPN, ele é mostrado como:
...
Tue Mar 12 22:02:57 2013 RESOLVE: Cannot resolve host address: <server domain name>: [NO_DATA] The requested name is valid but does not have an IP address.
Tue Mar 12 22:03:02 2013 RESOLVE: Cannot resolve host address: <server domain name>: [NO_DATA] The requested name is valid but does not have an IP address.
Tue Mar 12 22:03:07 2013 Attempting to establish TCP connection with <server address and port>
Tue Mar 12 22:03:07 2013 TCP connection established with <server address and port>
Tue Mar 12 22:03:07 2013 TCPv4_CLIENT link local: [undef]
Tue Mar 12 22:03:07 2013 TCPv4_CLIENT link remote: <server address and port>
Tue Mar 12 22:03:07 2013 TLS: Initial packet from <server address and port>, sid=217a2257 11069cf8
Tue Mar 12 22:03:10 2013 VERIFY OK: depth=1, <key details>
Tue Mar 12 22:03:10 2013 VERIFY OK: depth=0, <key details>
Tue Mar 12 22:03:14 2013 Data Channel Encrypt: Cipher 'BF-CBC' initialized with 128 bit key
Tue Mar 12 22:03:14 2013 Data Channel Encrypt: Using 160 bit message hash 'SHA1' for HMAC authentication
Tue Mar 12 22:03:14 2013 Data Channel Decrypt: Cipher 'BF-CBC' initialized with 128 bit key
Tue Mar 12 22:03:14 2013 Data Channel Decrypt: Using 160 bit message hash 'SHA1' for HMAC authentication
Tue Mar 12 22:03:14 2013 Control Channel: TLSv1, cipher TLSv1/SSLv3 DHE-RSA-AES256-SHA, 2048 bit RSA
Tue Mar 12 22:03:14 2013 [New_dot_server] Peer Connection Initiated with <server address and port>
Tue Mar 12 22:03:16 2013 SENT CONTROL [New_dot_server]: 'PUSH_REQUEST' (status=1)
Tue Mar 12 22:03:17 2013 PUSH: Received control message: 'PUSH_REPLY,route 172.16.0.0 255.255.255.0,topology net30,ping 10,ping-restart 120,ifconfig 172.16.0.22 172.16.0.21'
Tue Mar 12 22:03:17 2013 OPTIONS IMPORT: timers and/or timeouts modified
Tue Mar 12 22:03:17 2013 OPTIONS IMPORT: --ifconfig/up options modified
Tue Mar 12 22:03:17 2013 OPTIONS IMPORT: route options modified
Tue Mar 12 22:03:17 2013 Preserving previous TUN/TAP instance: Local Area Connection 2
Tue Mar 12 22:03:17 2013 Initialization Sequence Completed
Depois que o ícone da GUI do OpenVPN na bandeja ficar verde e um pop-up com o endereço IP for exibido. Eu tenho conectividade normal com a Internet, mas conectividade sem VPN. Tabela de roteamento é
IPv4 Route Table
===========================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 192.168.1.1 192.168.1.11 25
127.0.0.0 255.0.0.0 On-link 127.0.0.1 306
127.0.0.1 255.255.255.255 On-link 127.0.0.1 306
127.255.255.255 255.255.255.255 On-link 127.0.0.1 306
172.16.0.20 255.255.255.252 On-link 172.16.0.22 286
172.16.0.22 255.255.255.255 On-link 172.16.0.22 286
172.16.0.23 255.255.255.255 On-link 172.16.0.22 286
192.168.1.0 255.255.255.0 On-link 192.168.1.11 281
192.168.1.11 255.255.255.255 On-link 192.168.1.11 281
192.168.1.255 255.255.255.255 On-link 192.168.1.11 281
224.0.0.0 240.0.0.0 On-link 127.0.0.1 306
224.0.0.0 240.0.0.0 On-link 172.16.0.22 286
224.0.0.0 240.0.0.0 On-link 192.168.1.11 281
255.255.255.255 255.255.255.255 On-link 127.0.0.1 306
255.255.255.255 255.255.255.255 On-link 172.16.0.22 286
255.255.255.255 255.255.255.255 On-link 192.168.1.11 281
===========================================================================
Persistent Routes:
None
... e aqui eu me mando batendo minha cabeça contra a parede.
UPDATE3
Arquivos de configuração:
Servidor (servidor Ubuntu):
# Which local IP address should OpenVPN
# listen on? (optional)
;local a.b.c.d
# Which TCP/UDP port should OpenVPN listen on?
# If you want to run multiple OpenVPN instances
# on the same machine, use a different port
# number for each one. You will need to
# open up this port on your firewall.
port 3307
# TCP or UDP server?
proto tcp
;proto udp
# "dev tun" will create a routed IP tunnel,
# "dev tap" will create an ethernet tunnel.
# Use "dev tap0" if you are ethernet bridging
# and have precreated a tap0 virtual interface
# and bridged it with your ethernet interface.
# If you want to control access policies
# over the VPN, you must create firewall
# rules for the the TUN/TAP interface.
# On non-Windows systems, you can give
# an explicit unit number, such as tun0.
# On Windows, use "dev-node" for this.
# 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 or higher,
# you may need to selectively disable the
# Windows firewall for the TAP adapter.
# Non-Windows systems usually don't need this.
;dev-node MyTap
# SSL/TLS root certificate (ca), certificate
# (cert), and private key (key). Each client
# and the server must have their own cert and
# key file. The server and all clients will
# use the same ca file.
#
# See the "easy-rsa" directory for a series
# of scripts for generating RSA certificates
# and private keys. Remember to use
# a unique Common Name for the server
# and each of the client certificates.
#
# Any X509 key management system can be used.
# OpenVPN can also use a PKCS #12 formatted key file
# (see "pkcs12" directive in man page).
ca /etc/openvpn/ca.crt
cert /etc/openvpn/server.crt
key /etc/openvpn/server.key # This file should be kept secret
# Diffie hellman parameters.
# Generate your own with:
# openssl dhparam -out dh1024.pem 1024
# Substitute 2048 for 1024 if you are using
# 2048 bit keys.
dh /etc/openvpn/dh2048.pem
# Configure server mode and supply a VPN subnet
# for OpenVPN to draw client addresses from.
# The server will take 10.8.0.1 for itself,
# the rest will be made available to clients.
# Each client will be able to reach the server
# on 10.8.0.1. Comment this line out if you are
# ethernet bridging. See the man page for more info.
server 172.16.0.0 255.255.255.0
# Maintain a record of client <-> virtual IP address
# associations in this file. If OpenVPN goes down or
# is restarted, reconnecting clients can be assigned
# the same virtual IP address from the pool that was
# previously assigned.
ifconfig-pool-persist ipp.txt
# Configure server mode for ethernet bridging.
# You must first use your OS's bridging capability
# to bridge the TAP interface with the ethernet
# NIC interface. Then you must manually set the
# IP/netmask on the bridge interface, here we
# assume 10.8.0.4/255.255.255.0. Finally we
# must set aside an IP range in this subnet
# (start=10.8.0.50 end=10.8.0.100) to allocate
# to connecting clients. Leave this line commented
# out unless you are ethernet bridging.
;server-bridge 10.8.0.4 255.255.255.0 10.8.0.50 10.8.0.100
# Push routes to the client to allow it
# to reach other private subnets behind
# the server. Remember that these
# private subnets will also need
# to know to route the OpenVPN client
# address pool (10.8.0.0/255.255.255.0)
# back to the OpenVPN server.
;push "route 192.168.10.0 255.255.255.0"
;push "route 192.168.20.0 255.255.255.0"
# To assign specific IP addresses to specific
# clients or if a connecting client has a private
# subnet behind it that should also have VPN access,
# use the subdirectory "ccd" for client-specific
# configuration files (see man page for more info).
# EXAMPLE: Suppose the client
# having the certificate common name "Thelonious"
# also has a small subnet behind his connecting
# machine, such as 192.168.40.128/255.255.255.248.
# First, uncomment out these lines:
;client-config-dir ccd
;route 192.168.40.128 255.255.255.248
# Then create a file ccd/Thelonious with this line:
# iroute 192.168.40.128 255.255.255.248
# This will allow Thelonious' private subnet to
# access the VPN. This example will only work
# if you are routing, not bridging, i.e. you are
# using "dev tun" and "server" directives.
# EXAMPLE: Suppose you want to give
# Thelonious a fixed VPN IP address of 10.9.0.1.
# First uncomment out these lines:
;client-config-dir ccd
;route 10.9.0.0 255.255.255.252
# Then add this line to ccd/Thelonious:
# ifconfig-push 10.9.0.1 10.9.0.2
# Suppose that you want to enable different
# firewall access policies for different groups
# of clients. There are two methods:
# (1) Run multiple OpenVPN daemons, one for each
# group, and firewall the TUN/TAP interface
# for each group/daemon appropriately.
# (2) (Advanced) Create a script to dynamically
# modify the firewall in response to access
# from different clients. See man
# page for more info on learn-address script.
;learn-address ./script
# If enabled, this directive will configure
# all clients to redirect their default
# network gateway through the VPN, causing
# all IP traffic such as web browsing and
# and DNS lookups to go through the VPN
# (The OpenVPN server machine may need to NAT
# the TUN/TAP interface to the internet in
# order for this to work properly).
# CAVEAT: May break client's network config if
# client's local DHCP server packets get routed
# through the tunnel. Solution: make sure
# client's local DHCP server is reachable via
# a more specific route than the default route
# of 0.0.0.0/0.0.0.0.
;push "redirect-gateway"
# Certain Windows-specific network settings
# can be pushed to clients, such as DNS
# or WINS server addresses. CAVEAT:
# http://openvpn.net/faq.html#dhcpcaveats
;push "dhcp-option DNS 10.8.0.1"
;push "dhcp-option WINS 10.8.0.1"
# Uncomment this directive to allow different
# clients to be able to "see" each other.
# By default, clients will only see the server.
# To force clients to only see the server, you
# will also need to appropriately firewall the
# server's TUN/TAP interface.
client-to-client
# Uncomment this directive if multiple clients
# might connect with the same certificate/key
# files or common names. This is recommended
# only for testing purposes. For production use,
# each client should have its own certificate/key
# pair.
#
# IF YOU HAVE NOT GENERATED INDIVIDUAL
# CERTIFICATE/KEY PAIRS FOR EACH CLIENT,
# EACH HAVING ITS OWN UNIQUE "COMMON NAME",
# UNCOMMENT THIS LINE OUT.
;duplicate-cn
# The keepalive directive causes ping-like
# messages to be sent back and forth over
# the link so that each side knows when
# the other side has gone down.
# Ping every 10 seconds, assume that remote
# peer is down if no ping received during
# a 120 second time period.
keepalive 10 120
# For extra security beyond that provided
# by SSL/TLS, create an "HMAC firewall"
# to help block DoS attacks and UDP port flooding.
#
# Generate with:
# openvpn --genkey --secret ta.key
#
# The server and each client must have
# a copy of this key.
# The second parameter should be '0'
# on the server and '1' on the clients.
;tls-auth ta.key 0 # This file is secret
# Select a cryptographic cipher.
# This config item must be copied to
# the client config file as well.
;cipher BF-CBC # Blowfish (default)
;cipher AES-128-CBC # AES
;cipher DES-EDE3-CBC # Triple-DES
# Enable compression on the VPN link.
# If you enable it here, you must also
# enable it in the client config file.
comp-lzo
# The maximum number of concurrently connected
# clients we want to allow.
;max-clients 100
# It's a good idea to reduce the OpenVPN
# daemon's privileges after initialization.
#
# You can uncomment this out on
# non-Windows systems.
user nobody
group nogroup
# The persist options will try to avoid
# accessing certain resources on restart
# that may no longer be accessible because
# of the privilege downgrade.
persist-key
persist-tun
# Output a short status file showing
# current connections, truncated
# and rewritten every minute.
status openvpn-status.log
# By default, log messages will go to the syslog (or
# on Windows, if running as a service, they will go to
# the "\Program Files\OpenVPN\log" directory).
# Use log or log-append to override this default.
# "log" will truncate the log file on OpenVPN startup,
# while "log-append" will append to it. Use one
# or the other (but not both).
;log openvpn.log
;log-append openvpn.log
# Set the appropriate level of log
# file verbosity.
#
# 0 is silent, except for fatal errors
# 4 is reasonable for general usage
# 5 and 6 can help to debug connection problems
# 9 is extremely verbose
verb 3
# Silence repeating messages. At most 20
# sequential messages of the same message
# category will be output to the log.
;mute 20
Cliente:
# 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 <server address> 3307
;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 nobody
;group nogroup
# Try to preserve some state across restarts.
persist-key
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 path>
cert <cert path>
key <key path>
# Verify server certificate by checking
# that the certicate has the nsCertType
# field set to "server". 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 nsCertType
# field set to "server". The build-key-server
# script in the easy-rsa folder will do this.
;ns-cert-type server
# If a tls-auth key is used on the server
# then every client must also have the key.
;tls-auth ta.key 1
# Select a cryptographic cipher.
# If the cipher option is used on the server
# then you must also specify it here.
;cipher x
# Enable compression on the VPN link.
# Don't enable this unless it is also
# enabled in the server config file.
comp-lzo
# Set log file verbosity.
verb 3
# Silence repeating messages
;mute 20
Apenas para o registro se alguém vier aqui da pesquisa.
Eu recentemente reinstalei o servidor OpenVPN e todos os clientes (também gerando novamente todas as chaves) e o problema desapareceu. Eu suspeito que isso tenha sido algum tipo de bug muito localizado e de borda no servidor.
De qualquer forma, problema resolvido.
Tente abrir as Conexões de Rede no Painel de Controle (Central de Rede e Compartilhamento > Alterar as Configurações do Adaptador), vá para o adaptador de Conexão VPN, clique com o botão direito em > Propriedades > Separador Rede > Avançado > desmarque "Usar gateway padrão na rede remota" na guia Configurações de IP.
Experimente e veja se funciona. Eu tive o mesmo problema antes e que corrigiu isso para mim - soltando a conexão sem fio em um cliente x64 Win7.
Para qualquer usuário do Win7 (e possivelmente de outros sistemas operacionais) que vierem no futuro de uma pesquisa do Google: Entre em services.msc e "Pare" o serviço "AutoSwitch sem fio". Clique com o botão direito do mouse e selecione 'Propriedades' e, em 'Tipo de inicialização', selecione 'Desativado'. O Windows está eliminando o seu WiFi porque ele acredita que há uma LAN conectada. Isso permite que ele execute várias redes simultaneamente.
O arquivo .ovpn é idêntico entre os dois sistemas?
Não sei se isso resolverá seu problema, mas tenho script-security 2 system no meu arquivo .ovpn.
Felicidades