Create and Apply SSL Certificate to OpenWRT LuCI Web Interface

#OpenWRT #SSL #HTTPS

Full steps can be found at https://i12bretro.github.io/tutorials/0382.html

Prerequisites

   - A XCA PKI database  https://youtu.be/ezzj3x207lQ

Create Your SSL Certificate

   01. Launch XCA    02. Open the PKI database if it is not already (File ≫ Open DataBase), enter password    03. Click on the Certificates tab, right click on your Intermediate CA certificate    04. Select New    05. On the Source tab, make sure Use this Certificate for signing is selected    06. Verify your Intermediate CA certificate is selected from the drop down    07. Click the Subject tab    08. Complete the Distinguished Name section          internalName: openwrt.i12bretro.local          countryName: US          stateOrProvinceName: Virginia          localityName: Northern          organizationName: i12bretro          organizationUnitName: i12bretro Certificate Authority          commonName: openwrt.i12bretro.local    09. Click the Generate a New Key button    10. Enter a name and set the key size to at least 2048    11. Click Create    12. Click on the Extensions tab    13. Select End Entity from the type list    14. Click Edit next to Subject Alternative Name    15. Add any DNS or IP addresses that the certificate will identify    16. Update the validity dates to fit your needs    17. Click the Key Usage tab    18. Under Key Usage select Digital Signature, Key Encipherment    19. Under Extended Key Usage select Web Server and Web Client Authentication    20. Click the Netscape tab    21. Select SSL Server    22. Click OK to create the certificate

Exporting Required Files

   01. In XCA, click on the Certificates tab    02. Right click the SSL certificate ≫ Export ≫ File    03. Set the file name to uhttpd.crt verify the export format is PEM (.crt)    04. Click OK    05. Click the Private Keys tab    06. Right click the private key generated for the SSL certificate ≫ Export ≫ File    07. Set the file name to uhttpd.key and verify the export format is PEM private (.pem)    08. Click OK

Installing Prerequisites

   01. Log into OpenWRT via SSH    02. Run the following commands to install prerequisites          # update opkg packages          opkg update          # install prerequisite packages          opkg install luci-lib-px5g px5g-standalone libustream-openssl          # install/update luci          opkg install luci          # restart uhttpd service          /etc/init.d/uhttpd restart    03. Download WinSCP  https://winscp.net/eng/downloads.php    04. Extract WinSCP and run the executable    05. Connect to the OpenWRT IP address via WinSCP    06. Navigate to /etc    07. Rename uhttpd.crt and uhttpd.key to .old    08. Copy the created uhttpd.crt and uhttpd.key to /etc    09. Back in the terminal, run the following command to restart uhttpd          /etc/init.d/uhttpd restart

Applying SSL Certificates in Open-WRT

   01. Open a web browser and navigate to https://OpenWRT_IP    02. Authenticate at the Open-WRT login    03. Select System ≫ System from the top navigation    04. Set the hostname to match the hostname of the SSL certificate    05. Click the Save & Apply button   Source: https://fabianlee.org/2016/09/19/openwrt-enabling-https-for-the-luci-web-admin-interface/  

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