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Adds Additional troubleshooting documentation for issues experienced 

Signed-off-by: Sudheesh Singanamalla <sudheesh@cs.washington.edu>
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Sudheesh Singanamalla 2019-11-20 10:52:33 -08:00
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docs/_docs/guide/01-quickstart.md
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@ -160,7 +160,7 @@ To add subscriber information, you can do WebUI operations in the following orde
{: .notice--info}
### Adding a route for UE to have Internet connectivity
### Adding a route for UE to have Internet connectivity {#UEInternet}
---
If your phone can connect to internet, you must run the following command in Open5GS-PGW installed host.
@ -238,6 +238,23 @@ $ sudo systemctl restart open5gs-mmed
$ sudo systemctl restart open5gs-sgwd
```
#### Additional Troubleshooting
After successfully attaching the UE (e.g. `45.45.0.2`) to the EPC if the UE device doesn't have access to internet,
it is recommended to do the following checks:
- Check if the interface connected to the internet is correctly `NAT` with the `ogstun` interface. Follow the documentation [Here](#UEInternet)
- Ensure that the packets in the `INPUT` chain to the `ogstun` interface are accepted
```
$ sudo iptables -I INPUT -i ogstun -j ACCEPT
```
- Check if the UE's IP can be pinged successfully by performing `ping <IP of UE>` e.g.`ping 45.45.0.2`
- Configure the firewall correctly. Some operating systems (Ubuntu) by default enable firewall rules to block traffic
- Explicitly disable it to see if it resolves the problem of granting data access to the UE by doing
```
$ sudo ufw disable
```
### Uninstall Open5GS and WebUI
How to remove Open5GS package: