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--- pfsense:vpn:openvpn:assign_a_fixed_ip_to_a_remote_client [2020/11/29 23:31] – peter
+++ pfsense:vpn:openvpn:assign_a_fixed_ip_to_a_remote_client [2021/02/19 09:56] (current) – [Configure Firewall Rules for this User] peter
@@ Line 1: / Line 1: @@
 ====== PFSense - VPN - OpenVPN - Assign a fixed IP to a remote client ======
-Assigning a fixed IP to a client that connects to a VPN, in particular OpenVPN, with a specific user, can then be used in firewall rules.
+By assigning a fixed IP to a client that connects to a VPN allows this IP to be used in firewall rules.
+<WRAP info>
+**NOTE:**  It is assumed that an OpenVPN server has already been created and one or more correctly configured users exist.
+</WRAP>
-It is assumed that an OpenVPN server has already been created and one or more correctly configured users exist.
 ----
-===== Configure the Client Specific Overrides in OpenVPN =====
+===== Identify a fixed IP address for the Client to use ======
-Identify an IP address that must belong to the VPN network that cannot be assigned to other users.
+Navigate to **VPN -> OpenVPN**.
-Lets say the assigned network is 10.10.94.0/24 and therefore we have chosen the IP 10.10.94.30 for this user.
+In **Servers**, check the Tunnel Network used by the specific VPN Server.
-Subsequently, we precisely identify the user to whom we want to assign the IP just chosen, checking from **System -> User Manager -> Users**.
+In this case it is **10.20.30.0/24**.
+<WRAP info>
+**NOTE:**  The fixed IP address for the client must be a unique IP within this subnet.
-Select the specific user to assign the fixed IP address to.  Lets assume this is **User1**.
+For example **10.20.30.69**.
+</WRAP>
+{{:pfsense:vpn:openvpn:pfsense_-_vpn_-_openvpn_-_servers.png?800|}}
+----
+===== Identify the user to whom we want to assign the IP just chosen =====
+Navigate to **System -> User Manager -> Users**.
+Select the specific user to assign the fixed IP address to.
+  * Make a note of the actual username.  Lets assume this is **peter**.
+{{:pfsense:vpn:openvpn:pfsense_-_system_-_user_manager_-_users.png?800|}}
+----
+===== Allocate the fixed IP to the User =====
 Navigate to **VPN -> OpenVPN -> Client Specific Overrides**.
@@ Line 22: / Line 47: @@
 Click **Add**.
-Select the desired OpenVpn server if there are more than one.
+In **General Information**:
-Write the exact name of the user in the **Common Name** field; in our example: User1.  This should be exactly the same in the above "Select the specific user to assign the fixed IP address to." step.
+  * Server List:  **Select the desired OpenVPN server**.
+  * Common Name:  **peter**.  This needs to be the **exact** name of the user, as identified in the earlier step **Identify the user to whom we want to assign the IP just chosen**.
-Go to the bottom of the page and enter in Advanced Settings: **ifconfig-push 10.10.94.30 255.255.255.0**.
+{{:pfsense:vpn:openvpn:pfsense_-_vpn_-_openvpn_-_client_specific_overrides_-_general_information.png?800|}}
-Click **Save**.
+In **Client Settings**:
+  * Advanced Settings:  **ifconfig-push 10.20.30.69 255.255.255.0**.
+{{:pfsense:vpn:openvpn:pfsense_-_vpn_-_openvpn_-_client_specific_overrides_-_client_settings.png?800|}}
+  * Click **Save**.
 <WRAP info>
-**NOTE:**  From now on when User1 connects to the OpenVPN VPN, they will always be assigned the IP 10.10.94.30,
+**NOTE:**  From now on when peter connects to the OpenVPN Server, he will always be assigned the IP 10.20.30.69,
 </WRAP>
+----
+===== Test =====
+Connect to the VPN Server from the Client.
+Check the IP Address of the Connected Client.
+Navigate to **Status -> OpenVPN**.
+  * Check the **Virtual Address**.
+{{:pfsense:vpn:openvpn:pfsense_-_status_-_openvpn.png?800|}}
 ----
@@ Line 38: / Line 86: @@
 ===== Configure Firewall Rules for this User =====
-As we know that User1 will connect with IP 10.10.94.30, we can configure the Firewall Rules using this.
+We know that the user, peter, will connect with IP 10.20.30.69.
-By placing the IP 10.10.94.30 in the Source field, we can decide which IP our VPN user can access and which ports/services.
+Firewall rules can therefore be configured using this IP.
-In fact, they are exactly rules as if the OpenVPN interface were a physical interface and User1 was using a PC with a fixed IP.
+By placing the IP 10.20.30.69 in the Source field, we can decide which IPs our VPN user can access and which ports/services.
-{{:pfsense:vpn:openvpn:pfsense_-_firewall_-_rules_-_openvpn_-_fixed_ip_client.png?800|}}
+For example:
+  * Access is granted to IP Address 192.168.1.123 for the user connecting on 10.20.30.69, i.e. peter.
+  * All other traffic is blocked.
+{{:pfsense:vpn:openvpn:pfsense_-_firewall_-_rules_-_openvpn_-_updated.png?800|}}
 <WRAP info>
-**NOTE:**  The rules above allow only the address 10.10.94.10, to access the IP 192.168.201.10 (in this example an IP of the LAN) on any port.
+**NOTE:**  The last deny rule is not actually needed.
-The remaining traffic will be blocked!
+It is only put in to to make explicit the deny which in fact is how the firewall behaves if no rule is applied.
-In our example, the last deny rule is actually not needed, we only put it to make explicit the deny which in fact is how the firewall behaves if no rule is applied.
 </WRAP>
+----
+===== References =====