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78 lines
3.3 KiB
Markdown
78 lines
3.3 KiB
Markdown
---
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title: Pi-hole
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template: docs
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taxonomy:
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category: docs, apps
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routes:
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default: '/app_pihole'
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---
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[](https://install-app.yunohost.org/?app=pihole) [](https://dash.yunohost.org/appci/app/pihole)
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*Pi-hole* is a network-level ad blocker that acts as a DNS layer and possibly a DHCP3 server for use on a private network. It is designed to be installed on embedded devices with network capabilities, such as the Raspberry Pi, but can be used on other machines running GNU/Linux or in virtualised environments.
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## Using Pi-hole as a DHCP server
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> **Warning, you should be aware that touching your DHCP could break your network.
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In case your server is inaccessible, you will lose your dns resolution and IP address.
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Thus, you would lose any connection to the internet and even the connection to your router.**
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> If you encounter this kind of problem, please read the section "How to restore my network".
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### Configure Pi-hole
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There are 2 ways to configure Pi-hole to be used as your DHCP server.
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- Either you can choose to use it when you install the application.
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- Or you can activate the DHCP server afterwards in the "Settings" tab, part "Pi-hole DHCP Server".
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In this second case, it may be preferable to force the server IP to a static address.
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### Configure my router
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Your router or your ISP's router has a DHCP server enabled by default.
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If you keep this DHCP, along with Pi-hole's, you will have transparent conflicts between them.
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The first DHCP server to respond will distribute its own IP and settings.
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So you need to turn off your router's DHCP server and let Pi-hole manage your network.
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#### Why should I use Pi-hole's DHCP?
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By using Pi-hole's DHCP, you allow Pi-hole to give its dns configuration to each of your clients. This way, every request will be filtered by Pi-hole.
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Another case of using Pi-hole DHCP is if you have hairpinning problems (you can't connect to your server because its IP is your public IP, and your router doesn't allow this).
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In this case, using Pi-hole's dns will allow you to connect to your server by its local address rather than its public address.
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### Restore network
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> Oops!
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Your Pi-hole server has crashed, and you don't have DHCP anymore.
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Don't panic. We'll get through this.
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Use your favorite device on your desktop computer.
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And first, get your network interface (usually `eth0`).
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```bash
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sudo ifconfig
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```
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Then change your IP to a static one.
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```bash
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sudo ifconfig eth0 192.168.1.100
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```
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Now you can connect to your router and reboot its DHCP server to use it again.
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You can now remove your static IP and get a dynamic IP again.
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```bash
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sudo ifconfig eth0 0.0.0 && sudo dhclient eth0
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```
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> Remember to turn off your router's DHCP if your server is running again.
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## Useful links
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+ Website: [pi-hole.net](https://pi-hole.net)
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+ Official documentation: [docs.pi-hole.net](https://docs.pi-hole.net/)
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+ Application software repository: [github.com - YunoHost-Apps/pihole](https://github.com/YunoHost-Apps/pihole_ynh)
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+ Fix a bug or an improvement by creating a ticket (issue): [github.com - YunoHost-Apps/pihole/issues](https://github.com/YunoHost-Apps/pihole_ynh/issues)
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