#. ./vars ( ………………………++++++ …………………….++++++ writing new private key to ‘ca.key’ —– You are about to be asked to enter information that will be incorporated into your certificate request. What you are about to enter is what is called a Distinguished Name or a DN. There are quite a few fields but you can leave some blank For some fields there will be a default value, If you enter ‘.’, the field will be left blank. —– Country Name (2 letter code) [ZA]: State or Province Name (full name) [GP]: Locality Name (eg, city) [JHB]: Organization Name (eg, company) [Companynamevpn]: Organizational Unit Name (eg, section) []:IT Common Name (eg, your name or your server’s hostname) []: Companynamevpn Email Address [name@mail.com]:
Some information above already entered in step 4, hust hit enter and go to next line.
6. Building server key
#./build-key-server ovpnsrv1
Generating a 1024 bit RSA private key ………………………………….++++++ …………………….++++++ writing new private key to ‘ovpnsrv1.key’ —– You are about to be asked to enter information that will be incorporated into your certificate request. What you are about to enter is what is called a Distinguished Name or a DN. There are quite a few fields but you can leave some blank For some fields there will be a default value, If you enter ‘.’, the field will be left blank. —– Country Name (2 letter code) [SA]: State or Province Name (full name) [GP]: Locality Name (eg, city) [JHB]: Organization Name (eg, company) [Companynamevpn]: Organizational Unit Name (eg, section) []: Companynamevpn Common Name (eg, your name or your server’s hostname) []:Companynamevpn Email Address [name@email.com]:
Please enter the following ‘extra’ attributes to be sent with your certificate request A challenge password []: An optional company name []: Using configuration from /etc/openvpn/easy-rsa/openssl.cnf Check that the request matches the signature Signature ok The Subject’s Distinguished Name is as follows
Blah blah and then see the following.
Certificate is to be certified until Apr 10 15:15:27 2018 GMT (3650 days) Sign the certificate? [y/n]:y
1 out of 1 certificate requests certified, commit? [y/n]y Write out database with 1 new entries Data Base Updated
7. Building Diffie Hellman
#./build-dh
Generating DH parameters, 1024 bit long safe prime, generator 2 This is going to take a long time
#cd ../ #vi server.conf dev tap ;dev tun ca ca.crt cert ovpnsrv1.crt key ovpnsrv1.key # This file should be kept secret
; You can also add a route to a network as follows:
push "route 10.200.0.0 255.255.255.0"
Important NOTE:
If you want to connect to another network once you have connected via vpn, then you will need to add a push "route 10.200.0.0 255.255.255.0" in the server.conf file on the server. And the other network might need a route added in the routing table to tell them where to find the client that has connected via vpn
10. Startup the OpenVPN service
#service openvpn restart #chkconfig openvpn on
11. Generating client keys and certs on the server
The first time you try run the following you might come get errors – if so edit the /etc/openvpn/easy-rsa/keys/index.txt.attr file and change to the following:
unique_subject = no
You might also need to create an empty “.old” file in the /etc/openvpn/easy-rsa/keys/ folder
For each client you want to have connect do the following from the command prompt:
cd /etc/openvpn/easy-rsa
source ./vars
./build-key branch1 (choose a name for the client eg here is branch1)
./sign-req branch1
Windows Client Installation and Configuration
1. Download a copy of windows client
http://openvpn.net/release/openvpn-2.1.3-install.exe and install it.
2. Obtain cert and key
Get the following files from the server (located in /etc/openvpn/easy-rsa/keys/) and copy them to C:\Program Files\OpenVPN\config\
branch1.crt (or name of cert assigned)
branch1.csr (or name of cert assigned)
branch1.key (or name of key assigned)
ca.crt
ca.key
client.ovpn (if given along with the above – if not follow step 3)
3. Setting the client configuration for OpenVPN
Copy client.ovpn from C:\Program Files\OpenVPN\sample-config to C:\Program Files\OpenVPN\config
Edit it with the followings changes, similar to what you have done in the linux server
dev tap ;dev tun dev-node OpenVPN_Tap remote <ipaddress> 1194 (example: remote 202.188.1.1 1194) ca ca.crt cert branch1.crt #name of the cert you have been given key branch1.key #name of the key you have been given ns-cert-type server
4. Configure the network interface for OpenVPN Select “Control Panel” -> “Network Connection” -> “TAP-Win32#(#)” (ie rename the “new” connection that has now appeared. Right-Click to rename as ‘OpenVPN_Tap’
5. Startup the connection of client
Go to START>All Programs>OpenVPN>OpenVPN GUI , click it
In the task-bar, select “OpenVPN GUI” -> right-click “Connect”
Important NOTE:
If you want to connect to another network once you have connected via vpn, then you will need to add a push "route 10.200.0.0 255.255.255.0" in the server.conf file on the server. And the other network might need a route added in the routing table to tell them where to find the client that has connected via vpn
