# 1723 - Pentesting PPTP

## Basic Information


Commonly used to provide remote access to mobile devices, Point-to-Point Tunneling Protocol \(PPTP\) uses TCP port 1723 for key exchange and IP protocol 47 \(GRE\) to encrypt data between peers.

**Default Port**:1723

## Enumeration

```bash
nmap –Pn -sSV -p1723 <IP>
```

### [Brute Force](../brute-force.md#pptp)

## Vulnerabilities

{% embed url="https://www.schneier.com/academic/pptp/" %}

{% embed url="https://github.com/moxie0/chapcrack" %}