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Most distributions include OpenVPN; for the server setup, I am using OpenVPN 2.0.9 as provided by the RPMForge repository for CentOS 5. The first part of this series concentrates on the server, while the second and third parts will concentrate on the configuration of Linux and OS X clients, respectively.

• Most secure as there are multiple factors of authentication (TLS Key and Certificate that the user has, and the username/password they know) • Remote Access (SSL/TLS) • Certificates only, no auth • Each user has a unique client configuration that includes their personal certificate and key. • Useful if clients should not be prompted to enter a username and password • Less secure as it relies only on something the user has (TLS key and certificate) • Remote Access (User Auth) • Authentiation only, no certificates • Useful if the clients should not have individual certificates • Commonly used for external authentication (RADIUS, LDAP) • All clients can use the same exported client configuration and/or software package • Less secure as it relies on a shared TLS key plus only something the user knows (Username/password). Exporting a Configuration • Navigate to VPN > OpenVPN on the Client Export tab • Choose the VPN from the Remote Access Server drop-down list • Set any desired options in the upper section – The defaults are generally OK • Find the user in the list at the bottom of the page and select the appropriate configuration type to export. The Windows Installer choices are the most common. The “Inline” configuration choices are best when using a current client that isn’t listed. Hp elitebook 6930p drivers. Some older clients may not fully understand these, but older clients should be upgraded as soon as possible. There are links to many commonly used clients at the bottom of the Client Export package page.

It is now possible to connect and go to a site that reports the client IP address, such as, which should show the IP address of the VPN server to confirm that the client traffic is using the VPN. Once that is working, pfSense may be configured to use the info in the.ovpn file.

Configuring an OpenVPN Remote Access Server¶. Using OpenVPN for a remote access VPN is easy and secure. Clients are available for many different operating systems, including Windows, Mac, Linux, Android, iOS, and even ChromeOS.

Check the README in the OpenVPN installation dir. OpenVPN easy-rsa README.txt for instructions how to generate those. Server side configuration Add the following lines to the server config file: port 1194 proto udp dev tun topology subnet server 10.8.0.0 255.255.255.0 client-config-dir C: OpenVPN config ccd route 192.168.0.0 255.255.255.0 10.8.0.2 ca C: OpenVPN config ca.crt cert C: OpenVPN config server.crt key C: OpenVPN config server.key dh C: OpenVPN config dh1024.pem keepalive 10 60 comp-lzo persist-key persist-tun status C: OpenVPN config openvpn-status-tun.log 20 log C: OpenVPN config openvpn-tun.log verb 3 Replace the paths with the respective installation directory. Add a custom client config file on the server: Create a directory ccd in the same directory as the server config file and in there a config file named after the CN ( Common Name) of the client's certificate. Check the client certificate and look for this line ( CN=): Subject: C=CH, ST=State, L=City, O=org, OU=unit, CN=client1/name=EasyRSA/emailAddress=root@localhost In this example the file will be named client1 (without an extension), add the following lines to the file: ifconfig-push 10.8.0.2 255.255.255.0 push 'route 155.0.0.0 255.255.0.0 10.8.0.1' iroute 192.168.0.0 255.255.255.0 • ifconfig-push will give a static IP to this client • push 'route.' Pushes the route to reach the server side subnet to the client • iroute generates an internal route in OpenVPN to the client's subnet Client side configuration Add the following lines to the client config file: client dev tun proto udp remote 155.0.0.68 1194 resolv-retry infinite nobind persist-key persist-tun comp-lzo ca C: OpenVPN config client1.crt cert C: OpenVPN config client1.crt key C: OpenVPN config client1.key remote-cert-tls server Replace the paths with your installation directory.

There are all sort of configurations that needs tinkering before you can hit the ground running. OpenVPN is definitely not for everyone - I opted for another VPN that's more user friendly since I don't need that many advanced options.

For our example we’ll call ours VPN_Projects and populate it with some data (documents, pictures, presentations, etc.) • When finished, right-click on VPN_Projects and select Share. • This will bring up a dialog box asking you to Choose people to share with.

As asysadminboss said, you are describing the difference between a remote access VPN and a site to site VPN. If a user needs to be able to use network resources behind the firewall they need to use a remote access VPN. This type of VPN creates route statements on the remote system (client) to access internal network devices. If you need both sides of the VPN (client and server) you need to use a site a site VPN.

The bottom portion of the file is what we are concerned with. Starting at line 31, change the KEY_COUNTRY value, KEY_PROVINCE value, etc. To your country, province, etc. For example, we changed our province to “IL”, city to “Chicago”, org to “HowToGeek”, and email to our own email address. Also, if you’re running Windows 7 64-bit, change the HOME value in line 6 to%ProgramFiles (x86)% OpenVPN easy-rsa.

This is managed by Vista’s Network Discovery function. If your network is set to Private, then by default Network discovery is on. You can verify these settings by clicking Start > Control Panel > Network and Internet > Network and Sharing Center and clicking on the down arrow next to the word Network Discovery. With that now out of the way, we can get started.

You're looking for multiple OVPN files, one for every server you'd like to access. There may be other files, too, but as long as you've got the OVPN data, you should be ready for the next step. Getting started The latest build of OpenVPN is always available at the official website. The release notes for the latest build will appear at the top of the page, and if you scroll down you'll find a link to download the Windows setup file.

I have setup an OpenVPN connection between a Windows 2012 Server and an Debian Linux machine. The windows machine is the server and the linux machine is running openvpn as client. I can ping and connect to each other within the VPN network without problem. My problem is that I cannot access the client's network from the server machine. Ping from 10.10.0.2 &.1 is working without problems. Ping from Server to 192.168.1.X is not working.

Save these files to your computer. It’s a good idea to visit the DD-WRT information page to look up detailed information about your router and DD-WRT.

The reason why we are using a separate CA machine is to prevent attackers to infiltrate the server. If an attacker manages to access the CA private key they could use it to sign new certificates, which will give them access to the VPN server.

Before we open the firewall configuration file to add masquerading, we need to find the public network interface of our machine. To do this, type: • ip route grep default Your public interface should follow the word 'dev'. For example, this result shows the interface named wlp11s0, which is highlighted below. Outputdefault via 203.0.113.1 dev wlp11s0 proto static metric 600 When you have the interface associated with your default route, open the /etc/ufw/before.rules file to add the relevant configuration: • sudo nano /etc/ufw/before.rules This file handles configuration that should be put into place before the conventional UFW rules are loaded. Towards the top of the file, add the highlighted lines below.

Click Add New CA. OpenVPN Server Configuration Now for the biggest part: Enter the configuration for the VPN server. There are many options here, most explained on the page, but the key items to enter are: • TLS Authentication – Leave this checked, along with the box underneath to generate a new key. Using a TLS key is technically optional, but highly recommended. Some OpenSSL attacks such as Heartbleed have been mitigated by the use of a TLS key. • Tunnel Network – Should be a new, unique network that does not exist anywhere in the current network or routing table.

Remove the password from the client and server key files. Openssl rsa -in /config/auth/server.key -out /config/auth/server-no-pass.key openssl rsa -in /config/auth/client1.key -out /config/auth/client1-no-pass.key openssl rsa -in /config/auth/client2.key -out /config/auth/client2-no-pass.key 13. Overwrite the existing keys with the no-pass versions. Mv /config/auth/server-no-pass.key /config/auth/server.key mv /config/auth/client1-no-pass.key /config/auth/client1.key mv /config/auth/client2-no-pass.key /config/auth/client2.key 14.

Check the client certificate and look for this line ( CN=): Subject: C=CH, ST=State, L=City, O=org, OU=unit, CN=client1/name=EasyRSA/emailAddress=root@localhost In this example the file will be named client1 (without an extension), add the following lines to the file: ifconfig-push 10.8.0.2 255.255.255.0 push 'route 155.0.0.0 255.255.0.0 10.8.0.1' iroute 192.168.0.0 255.255.255.0 • ifconfig-push will give a static IP to this client • push 'route.' Pushes the route to reach the server side subnet to the client • iroute generates an internal route in OpenVPN to the client's subnet Client side configuration Add the following lines to the client config file: client dev tun proto udp remote 155.0.0.68 1194 resolv-retry infinite nobind persist-key persist-tun comp-lzo ca C: OpenVPN config client1.crt cert C: OpenVPN config client1.crt key C: OpenVPN config client1.key remote-cert-tls server Replace the paths with your installation directory. Additional Routes This setup works if the server running OpenVPN is also a router and set as the default-gateway on all the clients on the server-side subnet. In the case a dedicated router exists, add the following static routes to it (or add them on all of the clients) to reach the VPN subnet and the subnet of client1. Static server-side subnet routes: Destination Gateway Genmask 192.168.0.0 155.0.0.68 255.255.255.0 10.8.0.0 155.0.0.68 255.255.255.0 For additional hints on this topic, see.