PPTP is no longer considered a secure VPN technology because it relies upon MS-CHAPv2 which has been compromised. If you continue to use PPTP be aware that intercepted traffic can be decrypted by a third party, so it should be considered unencrypted. We advise migrating to another VPN type such as OpenVPN or IPsec.
Windows 10 PPTP VPN - social.technet.microsoft.com Oct 07, 2018 IPSec vs SSL VPN – Differences, Limitations and Advantages Dec 27, 2018 GRE (3.4) > Branch Connections | Cisco Press Generic Routing Encapsulation (GRE) is one example of a basic, nonsecure, site-to-site VPN tunneling protocol. GRE is a tunneling protocol developed by Cisco that can encapsulate a wide variety of protocol packet types inside IP tunnels. GRE creates a virtual point-to-point link to Cisco routers at remote points, over an IP internetwork. What’s VPN Passthrough? | TP-Link
VPN over GRE (not GRE over VPN) - ADTRAN Support Community
NOTE:The GRE tunnel can also be routed over a Policy-Based IPsec Site-to-Site VPN. To do this, create loopback interfaces and exchange the local and remote IP addresses of the GRE tunnel using IPsec. To do this, create loopback interfaces and exchange the local and remote IP addresses of the GRE … VPN over GRE (not GRE over VPN) - ADTRAN Support Community Re: VPN over GRE (not GRE over VPN) I went ahead and flagged this post as "Assumed Answered". If any of the responses on this thread assisted you, please mark them as Correct or Helpful as the case may be with the applicable buttons.
GRE/IPsec¶ Generic Routing Encapsulation (GRE), GRE/IPsec (or IPIP/IPsec, SIT/IPsec, or any other stateless tunnel protocol over IPsec) is the usual way to protect the traffic inside a tunnel. An advantage of this scheme is that you get a real interface with its own address, which makes it easier to setup static routes or use dynamic routing
While GRE and VPN tunnels both provide a method of connecting remote networks virtually, you are correct in the assumption that there are pros and cons with both. With VPNS, the biggest advantage is that they provide a more secure way for site-to-site traffic to … NCOS: Configure GRE over IPsec Between two capable Configuration Configuration Difficulty: Intermediate Router A: GRE Configuration. Step 1: Log into the router's NCOS Page. For help with logging in please click NCOS: Accessing the Setup Pages of a Cradlepoint router.; Step 2: Click Networking then Tunnels then GRE.; Step 3: Click the Add button to create a new GRE Tunnel.; Step 4: Give the Tunnel a Name for easy identification. RFC 2784 - Generic Routing Encapsulation (GRE)