What’s The Difference Between VPN & VPN Passthrough On A Router?

What’s The Difference Between VPN & VPN Passthrough On A Router?

VPN & VPN Passthrough

VPN feature on a router is the router that supports VPN technology natively, e.g., PPTP, L2TP or IPsec. You may configure this router to function as VPN server or set site-to-site VPN using other VPN gateway.



What Is The VPN Pass-Through Function On A Router?

what is vpn passthroughThis type only allows the VPN traffic that is sourced from VPN client to get through to the internet then get to the remote VPN gateway, but it doesn’t support VPN technology natively.

It’s a common feature on home wired/wireless router which supports hide NAT or PAT (just require one public IP to connect to the Internet from home network).

Due to VPN technology complexity, VPN pass-through function must be switched on home router when you try to establish the VPN back to your business VPN gateway using a business notebook.


What’s VPN Protocols of setting up a VPN (PPTP, L2TP, IPSec)?

In case a router has got VPN support what this means is that it supports VPN technology, e.g., L2TP, IPSec, and PPTP.

  • Secure VPN – IPSec PPTP OpenVPN:
    A VPN enables you to make a secure link between private networks via the internet. This actually gives you a chance to access your office or home network without necessarily being in your office or home.This has various benefits, mainly, you may access computers remotely on your network while located anywhere in the globe.This is very useful for organizations or companies that allow their workers to work remotely.

    These VPNs also encrypt the data which travels between your network and computer making your private data extremely hard to intercept. Because of the said encryption, making use of the VPN is more secure as opposed to using typical unencrypted connection.

    There are several protocols which you may use when configuring a VPN. These are L2TP/IPSec and PPTP. Let’s see some of their differences here below.

  • PPTP:
    PPTP is an abbreviation for Point-to-Point Tunneling Protocol. This is a great VPN protocol which is supported by most gadgets and is simple to configure. It also features a low overhead meaning it can offer quick speeds.
  • L2TP/IPSec:
    Layer 2 Tunneling Protocol or L2TP is known to be a step up security wise if compared to PPTP. While PPTP only makes use of 128-bit encryption, L2PT utilizes 168-bit.


What is VPN Passthrough?

The VPN Passthrough feature which is available on a majority of routers simply enables computers which are connected to a router to establish outbound VPNs. Any router that features VPN Passthrough technology supports both L2TP/IPSec and PPTP VPNs.


How Does VPN Passthrough Function?

Routers use what is known as Network Address Translation a.k.a NAT to allow all the gadgets on the network to share a single internet connection. This is much useful because it lets you connect multiple gadgets to the Internet.

Fundamentally, VPN Pass-through lets packets of data which originate from VPN clients on gadgets to pass via the router to VPN server, from home.


Why The Heck Is VPN Passthrough Required?

Almost all routers out there implement a function known as NAT to let various computers share similar internet connection; this is actually how your home router functions.

Both IPsec and PPTP VPNs don’t function with NAT natively. This is because a majority of routers implement NAT and this is a problem.

Fortunately, PPTP passthrough deals with this problem by replacing GRE which is the part of PPTP which does not function with NAT with enhanced GRE. The enhanced GRE functions well with NAT.

IPsec passthrough uses NAT-T encapsulating the IPsec packets in the UDP packet that functions with NAT.


How to Enable VPN Passthrough

You can get connected to another computer over internet or private network by use of a virtue private network.These VPNs are useful in the creation of secure connections on condition that your router is configured to enable such networks. This is known as VPN passthrough, without enabling this feature, you cannot connect to the VPN using that connection. Most routers can be configured easily to enable VPN passthrough.

Step 1
By use of your local area network, connect to the internet and then launch the web browser of your preference.

Step 2
Key in your router’s administration program IP address into the URL bar. Mostly but not always, this program’s IP address is normally or if none of these addresses functions, go back to your owner’s manual to get your router’s exact IP address.

Step 3
Key-in administrator ID and password as well when requested by the administration program.

Step 4
Access router’s security configuration options which are under a heading or a tab named “Security.”

Step 5
Select option enabling “PPTP Passthrough.” PPTP represents Point-to-Point Tunneling Protocol, the normal protocol that implements VPN connections and VPN.

Step 6
Go to the port forwarding choices from the administrator program and enable the port forwarding for the PPTP on the port 1723. Consult your manual for instructions on port forwarding.

Step 7
Press Windows key then type VPN for search in the bar, then go to the Settings category.

Step 8
Select “Set up a VPN (virtual private network) connection.”

Step 9
In the “Internet address” field, enter the VPN’s Internet address followed by the name of the VPN in the “Destination name” field. Making sure that “Remember my credentials” box is ticked, then click “Create.”

Step 10
From the Networks pane, Select the VPN then click “Connect.” If you’ve correctly configured passthrough, you will be required to enter your ID and password for the virtual private network.


Final Verdict

  • To sum up everything, despite their names being almost similar, both VPN passthrough and VPN features on wireless routers provide very different functions.
  • In case you require to access your network while located anywhere in the globe, you achieve this by setting up a VPN. You must, therefore, purchase a router featuring VPN functionality.
  • If you aren’t worried about this or you simply need to connect to a VPN, a router featuring VPN passthrough technology will work perfectly for you..

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