Difference between revisions of "Setup a VPN"
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==Testing== | ==Testing== | ||
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We'll build a raw (unsecured) connection for testing. | We'll build a raw (unsecured) connection for testing. | ||
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inet6 fe80::4c39:d598:21b8:2b41/64 scope link stable-privacy | inet6 fe80::4c39:d598:21b8:2b41/64 scope link stable-privacy | ||
valid_lft forever preferred_lft forever</pointopoint,multicast,noarp,up,lower_up> | valid_lft forever preferred_lft forever</pointopoint,multicast,noarp,up,lower_up> | ||
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=Securing your VPN= | =Securing your VPN= | ||
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== Handling it locally == | == Handling it locally == | ||
<div class=" | === Static-Key === | ||
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In the server's <code>/etc/openvpn</code> directory, run the following command to generate a static key: | In the server's <code>/etc/openvpn</code> directory, run the following command to generate a static key: | ||
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* <code>ip a</code> | * <code>ip a</code> | ||
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=== TLS-enabled === | === TLS-enabled === | ||
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<span style="color: rgb(128, 0, 128);" data-mce-style="color: #800080;"><big>'''WERKIN ON IT'''</big></span> | <span style="color: rgb(128, 0, 128);" data-mce-style="color: #800080;"><big>'''WERKIN ON IT'''</big></span> | ||
[[Using easy-rsa]] | [[Using easy-rsa]] | ||
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==Using a Commercial VPN Service== | ==Using a Commercial VPN Service== | ||
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===PIA=== | ===PIA=== | ||
<span style="color: rgb(128, 0, 128);" data-mce-style="color: #800080;"><big>'''WERKIN ON IT'''</big></span> | <span style="color: rgb(128, 0, 128);" data-mce-style="color: #800080;"><big>'''WERKIN ON IT'''</big></span> | ||
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===NordVPN=== | ===NordVPN=== | ||
<span style="color: rgb(128, 0, 128);" data-mce-style="color: #800080;"><big>'''WERKIN ON IT'''</big></span> | <span style="color: rgb(128, 0, 128);" data-mce-style="color: #800080;"><big>'''WERKIN ON IT'''</big></span> | ||
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=Starting the VPN on Boot= | =Starting the VPN on Boot= | ||
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==Server== | ==Server== | ||
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* <code>systemctl daemon-reload</code> | * <code>systemctl daemon-reload</code> | ||
* <code>sudo service openvpn restart</code> | * <code>sudo service openvpn restart</code> | ||
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[[Category:Linux]] | |||
[[Category:Network Management]] | |||
[[Category:WIP]] | |||
Latest revision as of 01:33, 2 February 2022
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11 (bullseye) |
| As always... | |
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Start with: |
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Install openvpn
sudo apt install openvpn
Testing
We'll build a raw (unsecured) connection for testing.
Note that this is not a persistent setup. Hitting Ctrl-C in the terminal where you started openvpn will destroy the VPN tunnel.
Configure as a server
sudo openvpn --dev tun1 --ifconfig 10.9.8.1 10.9.8.2
in a second terminal:
ip a
& you should see a tun1 entry like:
9: tun1: <pointopoint,multicast,noarp,up,lower_up> mtu 1500 qdisc pfifo_fast state UNKNOWN group default qlen 500
link/none
inet 10.9.8.1 peer 10.9.8.2/32 scope global tun1
valid_lft forever preferred_lft forever
inet6 fe80::dc71:3707:693c:5017/64 scope link stable-privacy
valid_lft forever preferred_lft forever
Configure as a client
sudo openvpn --remote SERVER_IP --dev tun1 --ifconfig 10.9.8.2 10.9.8.1
(Where SERVER_IP is the IP address or name of the machine acting as the server...)
in a second terminal:
ip a
& you should see a tun1 entry like:
3: tun1: <pointopoint,multicast,noarp,up,lower_up> mtu 1500 qdisc pfifo_fast state UNKNOWN group default qlen 500
link/none
inet 10.9.8.2 peer 10.9.8.1/32 scope global tun1
valid_lft forever preferred_lft forever
inet6 fe80::4c39:d598:21b8:2b41/64 scope link stable-privacy
valid_lft forever preferred_lft forever</pointopoint,multicast,noarp,up,lower_up>
Securing your VPN
Handling it locally
Static-Key
In the server's /etc/openvpn directory, run the following command to generate a static key:
sudo openvpn --genkey --secret static.key
Copy this static key to the clients /etc/openvpn directory using a secure channel like scp or sftp.
sudo scp static.key USER@VPNclient:~- Then, on the client:
sudo mv static.key ~/static.key /etc/openvpn
On the server, create a new /etc/openvpn/tun0.conf file:
sudo vi /etc/openvpn/tun0.conf
and add the following:
dev tun0 ifconfig 10.9.8.1 10.9.8.2 secret /etc/openvpn/static.key
On the client, create a new /etc/openvpn/tun0.conf file:
sudo vi /etc/openvpn/tun0.conf
and add the following:
remote SERVER_IP dev tun0 ifconfig 10.9.8.2 10.9.8.1 secret /etc/openvpn/static.key
Start OpenVPN by hand on both sides with the following command (verbose output at 6):
sudo openvpn --config /etc/openvpn/tun0.conf --verb 6
You should now see tun devices on both machines (like in the Testing section above):
ip a
TLS-enabled
WERKIN ON IT
Using a Commercial VPN Service
PIA
WERKIN ON IT
NordVPN
WERKIN ON IT
Starting the VPN on Boot
Server
sudo vi /etc/openvpn/server/server.conf
WERKIN ON IT
& create the status log file:
touch /var/log/openvpn/openvpn-status.log
Restart OpenVPN:
systemctl daemon-reloadsudo service openvpn restart
Client
sudo vi /etc/openvpn/client/client.conf
WERKIN ON IT
Restart OpenVPN:
systemctl daemon-reloadsudo service openvpn restart