What is a PPTP VPN and How Does It Work?
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PPTP stands for Point-to-Point Tunneling Protocol. Developed by Microsoft, it is the oldest yet the most commonly used protocol on both LAN and WAN networks. The PPTP VPN uses 128-bit encryption which may not be as secure as 256-bit, but it is better than no encryption at all.
PPTP uses the TCP port 1723 for communication which in turn uses the GRE protocol. The data packets transmitted through the tunnel are encapsulated and treated as IP packets. When initiated from the client side, PPTP tunneling doesn’t need supporting devices like routers, etc.
PPTP is fairly easy to setup, and it is compatible with almost all operating systems. In fact, the protocol can be setup in routers, Raspberry Pi, Synology NAS, etc. The protocol is highly recommended for users who require average security but fast speed when using the internet.
The PPTP protocol uses the GRE and TCP port 1723 for smooth data transmission.
128 bit encryption is the maximum supported using RSA RC4 algorithm.
Due to fairly low level encryption which is 128-bit, the protocol offers highest speed as compared to other protocols.
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