The problem appears to be that the mppe module needed for pptp vpn encryption is not included, even though the pptp vpn setup has an option for encryption. So the only way I got it to work was to use a vpn server that has a "no encryption" option, and to configure the pptp vpn in the droid-x with the "Enable encryption" turned off.

PPTP is not as secure as IPSec and cannot secure two networks. PPTP can only secure one IP address with one other IP address or with a network. PPTP is now often replaced by L2TP which provides security using IPSec, and PPTP has also been made obsolete by L2TP and IPSec. Lastly another limitation PPTP has compared to L2TP is that it can not Which is the Best VPN Protocol? PPTP vs. OpenVPN vs. L2TP Apr 04, 2018 VPN Protocols Explained Simply - PPTP vs L2TP/IPSec vs PPTP. The of the first network protocols invented for VPN services was called the Point to Point … vpn - Security of PPTP vs IPSec - Server Fault

configuration_guide_for_vpn - TP-Link

PPTP. PPTP (aka Point-to-Point Tunneling Protocol) is one of the most recognizable VPN protocols … Which ports do you need to open on a firewall to allow PPTP. To allow PPTP tunnel maintenance traffic, open TCP 1723. To allow PPTP tunneled data to pass through router, open Protocol ID 47. L2TP over IPSec. To allow Internet Key Exchange (IKE), open UDP 500. To allow IPSec Network Address Translation (NAT-T) …

PPTP is not as secure as IPSec and cannot secure two networks. PPTP can only secure one IP address with one other IP address or with a network. PPTP is now often replaced by L2TP which provides security using IPSec, and PPTP has also been made obsolete by L2TP and IPSec. Lastly another limitation PPTP has compared to L2TP is that it can not

PPTP and L2TP - Fortinet PPTP and L2TP. A virtual private network (VPN) is a way to use a public network, such as the Internet, as a vehicle to provide remote offices or individual users with secure access to private networks. FortiOS supports the Point-to-Point Tunneling Protocol (PPTP), which enables interoperability between FortiGate units and Windows or Linux PPTP Which VPN Protocol? PPTP vs. OpenVPN vs. L2TP vs. SSTP Mar 15, 2016 PPTP (remote access) - Sophos Using the Point-to-Point Tunneling Protocol (PPTP), you can provide connections to your network through private tunnels over the internet. The protocol itself does not describe encryption or authentication features. However, the firewall supports several authentication options including Password Authentication Protocol (PAP), Challenge Handshake Authentication Protocol (CHAP), and … What is the Difference Between PPTP vs. L2TP Protocols