Limiting scope of openVPN access
-
You are safest just to refer to the whole /30 in firewall rules. When you set the IP for the client, you need to use, for example: 10.0.0.4/30 like you had.
The addressing in OpenVPN is covered a bit here:
http://doc.pfsense.org/index.php/Why_can%27t_I_ping_some_OpenVPN_adapter_addresses%3FThe client will get all settings from the server as usual, just on their static IP. If you want to stop the user from getting the pushed routes and settings, you can check "Prevent this client from receiving any server-defined client settings." on the override.
-
Thanks jimp. Do you see any limits on how many people I can set up this way? Down the road, we may have as many as 500 users who are on the road, and I want to give each user a vpn that only accesses their own virtual desktop.
-
Just use a large enough subnet to accommodate your users * 4. So in your case, ~512*4=2048 IPs, So a /21 or a /20's worth of IPs in any of the private blocks would work.
-
Hi,
I noticed some problems with "Client Specific overrides".
I am using an OpenVPN Server with Tunnel Network 10.0.1.0/24
I tried with Client specific override tunnel network of 10.0.2.120/30
The Client could connect to the server but got no access. Thats ok, because of the wrong subnet.
Ok, I then deleted the complete client specific override for this clien/CN, restarted the OpenVPN Server but the client still got the IP of the 10.0.2.120/30 subnet.I created again an client specific override for this client/CN and didn't choose any tunnel network (so it used the servers default) and then it conneted fine and got an IP of the 10.0.1.0/24 subnet.
Did I something wrong ?!
-
Yes, the static IPs for overrides must be within the tunnel network.
-
Yes, the static IPs for overrides must be within the tunnel network.
Yes, I wrote that in my previous post I think.
What I want so say is:
If I create an override for a client the override is working.
If I delete the override completely, than the override still exists. -
You have to restart OpenVPN after editing or deleting an override, IIRC. It doesn't restart them automatically.
-
You have to restart OpenVPN after editing or deleting an override, IIRC. It doesn't restart them automatically.
Thanks. Good to know that but I restarted the OpenVPN Server after I did any changes.
–-- EDIT ----
I tested it again:
Restarting OpenVPN Server
OpenVPN-Server Tunnel Network is: 10.0.1.0/24
Client Specific Override Tunnel Network: 10.0.1.180/30
Restarting OpenVPN Server
Connecting Client
This is working. Clients IP is after connecting to the server: 10.0.1.181/30
Disconnecting client
Deleting Client specific override
Restarting server
Connecting Client
This is working. Client IP is still 10.0.1.181/30I attached some screenshots.
-
Does the file for that cn still exist in /var/etc/openvpn-csc?
-
Yes ist does exist:
ifconfig-push 10.0.1.181 10.0.1.182 -
I just pushed a fix, should be in new snaps soon
-
Hi,
it is working now for me now as expected.
I am using 2.0-RC3 (amd64) built on Thu Jul 28 05:40:09 EDT 2011Thanks jimp!
