hacktricks/pentesting/1723-pentesting-pptp.md

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# 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" %}