http://www.vabolis.lt/2007/06/28/linux-arba-nesiseka/

"Pluss" <pluss.work@gmail.com> wrote in message news:gl6j3v$qcq$1@trimpas.omnitel.net...
> Sveiki.
> Reikia pagalbos su OpenVPN.
> Imones LAN'as 192.168.0.0 (visi iseina per Gateway 192.168.0.254 (Linux, 
> Debian)). Tarkim as jungiuosi is namu (Point to Point) prie imones. 
> Susijungti susijungia be problemu, tik as is namu negaliu pasiekti nei 
> vieno IP (pinginau), o is Gateway namu PC pasiekiu (192.168.2.6).
> Reiketu kad klientai galetu pasiekti visus imones PC esancius 192.168.0.0.
> 
> Kai ant gw startuoja OpenVPN, susikuria interface tun0:
> inet addr:192.168.2.1  P-t-P:192.168.2.2  Mask:255.255.255.255
> 
> O namie:
> inet addr:192.168.2.6  P-t-P:192.168.2.5  Mask:255.255.255.255
> 
> Pridedu zemiau Serverio ir kliento konfigus.
> Jei kas susipazines su OpenVPN, gal kas pagelbetumete?
> 
> 
> Dekui isanksto.
> 
> #############################Server conf#############################
> #
> # Which local IP address should OpenVPN
> # listen on? (optional)
> local AAA.BBB.CCC.DDD # VPN serverio isorinis IP
> 
> # 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 1194
> 
> # 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/easy-rsa/keys/ca.crt
> cert /etc/openvpn/easy-rsa/keys/server.crt
> key /etc/openvpn/easy-rsa/keys/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/easy-rsa/keys/dh1024.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 192.168.2.0 255.255.255.0
> 
> # 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 192.168.2.6 255.255.255.0
> # 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 192.168.2.0 255.255.255.0
> # 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 192.168.0.241"
> push "dhcp-option WINS 192.168.0.241"
> 
> # 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 /etc/openvpn/easy-rsa/keys/tlsauth.key 0 # This file is secret
> tls-server
> 
> # 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 4
> 
> # Silence repeating messages.  At most 20
> # sequential messages of the same message
> # category will be output to the log.
> ;mute 20
> #
> ######################################################
> 
> 
> 
> 
> #############################Client conf#############################
> #
> # 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 AAA.BBB.CCC.DDD 1194 # VPN serverio isorinis IP
> ;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 /etc/openvpn/easy-rsa/keys/ca.crt
> cert /etc/openvpn/easy-rsa/keys/nerijusv.crt
> key /etc/openvpn/easy-rsa/keys/nerijusv.key
> 
> # 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 /etc/openvpn/easy-rsa/keys/tlsauth.key 1
> tls-client
> 
> # Select a cryptographic cipher.
> # If the cipher option is used on the server
> # then you must also specify it here.
> ;cipher x
> cipher BF-CBC
> 
> # 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 4
> 
> # Silence repeating messages
> ;mute 20
> 
> # By Pluss / Ijungti Logai
> status openvpn-status.log
> log         openvpn.log
> #
> route-delay 2
> #route 192.168.0.0 255.255.255.0 192.168.2.6
> #route add -net 192.168.0.0 netmask 255.255.255.0 gw 192.168.2.6
> #
> ############################################################