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Configuring a DD-WRT router as a remotely-connectable home linux server.
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| ###################################### | |
| ########### INSTALLATION ############# | |
| ###################################### | |
| First, we will configure the primary internet-facing router. | |
| - Reserve an IP address that will be your DD-WRT router. In this example, I will use 192.168.1.69 | |
| - Setup your port-forwarding to expose SSH by setting the external port to something memorable like 420, and the internal port to 22 on IP 192.168.1.69. | |
| Now, factory reset the DD-WRT router, and connect it directly to your laptop via ethernet. Disconnect from your primary router. | |
| Go to the DD-WRT router configuration page at 192.168.1.1. | |
| Let's first enable SSH (Remember to Save and Apply Settings after changes to each section): | |
| Go to <Services> and set | |
| SSHd: Enable | |
| Now go to <Administration> and set | |
| SSH Management: Enable | |
| Allow Any Remote IP: Enable | |
| Now, let's connect this DD-WRT router to the primary router: | |
| In <Setup>, fill in the following information: | |
| Local IP Address: 192.168.1.69 | |
| Subnet Mask: 255.255.255.0 | |
| Gateway: 192.168.1.1 | |
| Local DNS: 192.168.1.1 | |
| DHCP Server: DISABLE | |
| Save and reboot the router. | |
| While it reboots, connect an Ethernet cable between a ETH port on the primary router to an ETH port on the DD-WRT router. | |
| If you connect to the primary router, you should now be able to go to 192.168.1.69 in your browser to access the management page. | |
| And running `ssh <your external ip>:420` will connect you to the SSH server on your DD-WRT router. | |
| Now is a good time to setup and enable DDNS on your DD-WRT router. | |
| ###################################### | |
| ######## Configuring Linux ########### | |
| ###################################### | |
| Login to the DDWRT machine via SSH as Root. | |
| Follow this guide to install OPKG/Entware: https://wiki.dd-wrt.com/wiki/index.php/Installing_Entware | |
| Once that is succesfully, running, go ahead and run | |
| opkg install busybox | |
| opkg install sudo | |
| Now, we want to create a non-root user that we will login to SSH with. | |
| adduser admin | |
| visudo | |
| Add the following line to this file: | |
| admin ALL=(ALL) ALL | |
| Now log out of SSH, and try to log back in again as `admin`. once logged in, try to run `vi /etc/passwd`. If you do not have root access by default, this file should be empty. | |
| Now try `sudo vi /etc/passwd`. After entering the root password, there should be contents in this file. Everything is now working correctly. | |
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