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Code Issues Releases Wiki Activity

Updated FAQs (markdown)

Bill Zimmerman 2020-07-21 18:41:26 +02:00
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FAQs.md

@ -21,6 +21,7 @@ This has been written to address some frequently asked questions among users of
* [Can I use RaspAP with my custom dnsmasq configuration?](#dnsmasq)
* [OpenVPN fails to start and/or I have no internet. Help!](#openvpn)
* [OpenVPN works but I have partial or no internet access. Help!](#partial)
* [OpenVPN is enabled but I am still blocked from country restricted websites. Help!](#restricted)
* [How do I exclude NAT rules from IP traffic on localhost?](#iptables)
* [Why is the 802.11ac 5GHz option disabled in Configure hotspot?](#80211ac)
* [I think my country allows 5 GHz AP channels. Can I test this?](#wificountries)
@ -279,6 +280,18 @@ The results are reported as round-trip response times in milliseconds and the pe
Protip: free VPNs are frequently oversubscribed and usually not worth the trouble.
## <a name="restricted"></a>OpenVPN is enabled but I am still blocked from country restricted websites. Help!
Remote hosts use a variety of methods to defeat VPNs, some more aggressively than others. Many VPN providers will advise you to configure custom DNS servers to mitigate [DNS leaks](https://dnsleaktest.com/), which you can do from RaspAP's **DHCP > Advanced** tab. Others have specific VPN nodes to use with popular streaming services.
Several users have reported that Firefox's [DNS-over-HTTPS (DoH)](https://support.mozilla.org/en-US/kb/firefox-dns-over-https) has created problems with their VPN, in effect creating a DNS leak from the browser that circumvents RaspAP's DNS settings. Be sure to disable this "feature" when using a VPN service.
If you suspect network traffic is not being routed through tun0 (or any other interface) for some reason, you can monitor this directly from your RPi with `iftop`:
```
sudo apt install iftop
sudo iftop -i [interface]
```
## <a name="iptables"></a> How do I exclude NAT rules from IP traffic on localhost?
RaspAP's [Quick Installer](https://github.com/billz/raspap-webgui/wiki/Quick-Installer-usage) configures network-address-translation (NAT) with iptables rules, so that the RPi can act as an internet gateway to multiple hosts on a local network with a single public IP address. This is done by rewriting the addresses of IP packets as they pass through the NAT system. Many access points, including RaspAP, use a combination of IP forwarding and masquerading to achieve this.