Solution for Remote Administration using VPN Tunnel without activating Remote Management

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Solution for Remote Administration using VPN Tunnel without activating Remote Management

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Solution for Remote Administration using VPN Tunnel without activating Remote Management
Solution for Remote Administration using VPN Tunnel without activating Remote Management
2022-08-31 12:00:42 - last edited 2022-08-31 13:26:32
Model: Archer VR2100v  
Hardware Version: V1
Firmware Version: 1.7.0 0.9.1 v009e.0 Build 220115 Rel.1642n

Hello all,

I am using a VR2100v with OpenVPN to securely connect to my home network from external (internet). The setup of OpenVPN worked without any problems, but I could not connect to the router administration web page, because every time I got the error "Forbidden Access". A "fast" solution for this error is the activation of the "Remote Management" in the menu "Advanced -> System Tools -> Administration". However, it should be mentioned that this setting also allows an access to the router administration website via the WAN IP/DNS address. This may not be desirable for security reasons. A solution to access the router administration web page without activating the remote management but using VPN connection is to set a second IP address for the router under the menu "Advanced -> Network -> LAN Settings", whereby the second IP address should be within the IP range that the VPN server provides for the clients. 

 

Example Configuration:

 

LAN Settings (Menu: Network)
-----------------------------------------
IP Address: 192.168.1.1
Subnet Mask: 255.255.255.0

Second IP: Checked
IP Address: 192.168.0.1
Subnet Mask: 255.255.255.0

 

 

OpenVPN (Menu: VPN)
-----------------------------------------
Enable VPN Server: Checked
Service Port: Your Desired Protocol (For me TCP)
Service Port: Your Desired Port
VPN Subnet/Netmask: 192.168.0.0 / 255.255.255.0

 

 

Administration (Menu: System Tools)

-----------------------------------------

Remote Management: Unchecked
 

 

 

With these IP settings I am able to access on the Router-Administration Website using the VPN Connection only without having the Remote Management setting activated, and therefore without letting a WAN connection to the Remote-Adminsitration Website.


I would like to point out that I am not a network (security) specialist  and I cannot ensure that this method is secure or not. I just wanted to offer a solution that worked for me.

 

With kind regards,
opcodex64

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#1
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4 Reply
Re:Solution for Remote Administration using VPN Tunnel without activating Remote Management
2022-09-07 07:36:27

  @opcodex64 Strange. When I try this it complains about both subnets being the same and won't allow it when I come to reconfig the router's VPN settings.

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#2
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Re:Solution for Remote Administration using VPN Tunnel without activating Remote Management
2022-09-07 07:39:49

  @myke52 

Hello myke52,

 

I know! I forgot to mention that you have to first set up the OpenVPN settings and enabling it and then you have to configure the Second IP in LAN Settings ! If you first configure the Second IP and then OpenVPN, then OpenVPN will complain !!

 

I just figured this out two days ago. 


Can you try this way and tell me if it worked ?

 

 

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#3
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Re:Solution for Remote Administration using VPN Tunnel without activating Remote Management
2022-09-07 08:19:26

  @opcodex64 Thanks. It works but complains about not being able to resolve an IP address to a MAC address when I login to the router admin panel over VPN. I assume it's referring to the new 2nd IP?

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#4
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Re:Solution for Remote Administration using VPN Tunnel without activating Remote Management
2022-09-07 16:57:30

  @myke52 

Hey! Sorry for late reply. A lot of work today.

 

Can you provide IP Adress configuration ? What is your Router First and Second IP and what did you set in OpenVPN?? 

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