# OpenGGSN

```
SUDO VI /etc/osmocom/osmo-ggsn.cfg
```

```
!
! OpenGGSN (0.94.1-adac) configuration saved from vty
!!
!
!
stats interval 5
!
line vty
 no login
!
ggsn ggsn0
 gtp state-dir /tmp
 gtp bind-ip 127.0.0.6
 apn internet
  gtpu-mode tun
  tun-device tun4
  type-support v4
  ip prefix dynamic 176.16.1.1/24
  ip dns 0 192.168.8.1
  ip dns 1 8.8.8.8
  ip ifconfig 176.16.1.1/24
  no shutdown
 default-apn internet
 no shutdown ggsn
```


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://gsm-hacking.telco-sec.com/2g-in-a-b0x/openggsn.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.