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About this tool
Scored hardening pass for Tenda routers — shared admin/Wi-Fi password, firmware bugs, end-of-life models, WPS, UPnP and cloud app access.
An eighteen-step, severity-weighted hardening pass for Tenda AC, F and N series routers and Nova mesh kits, built around the two things that make budget hardware different. First, Tenda's setup wizard offers to reuse the Wi-Fi password as the router login password, so on a default install everyone with the Wi-Fi key is an administrator. Second, the web interface has a long published record of buffer-overflow and command-injection flaws, several of which need no login at all, which makes firmware currency and WAN exposure the highest-value fixes. WPS, UPnP, port forwards, the cloud app account and the guest network are all scored, and the result stays capped while any critical item is open.
Open Tenda Router Hardening Checklist on AltFTool — it loads instantly in your browser.
Add your input to the workspace.
Adjust the options until the result looks right.
Copy or download the output and put it to work.
The first critical step is separating the admin login from the Wi-Fi key, which the setup wizard actively encourages you to merge.
If Tenda no longer publishes firmware for your model, the checklist says so rather than pretending a toggle fixes it.
One step has you check your public IP from mobile data, which catches services a firmware update quietly turned back on.
Tenda routers conventionally answer at http://192.168.0.1, or at tendawifi.com from a device on the network. There is often no separate factory admin password: the first-run wizard sets one, and it offers to reuse the Wi-Fi password for it, which is why separating the two is the first thing to fix.
It very often is, because Tenda's setup wizard offers exactly that and most people accept. The consequence is that every guest, tenant or neighbour holding the Wi-Fi key can log into the router and change anything, and rotating the Wi-Fi key alone does not lock them out of the admin page. Set a distinct login password under System Settings.
They are usable if the firmware is current, remote web management is off and the model still receives updates. The concern is that Tenda's web interface has accumulated a long run of published buffer-overflow and command-injection vulnerabilities, a number of which require no authentication, and Mirai-family botnets scan for them. On a model that no longer gets firmware, replacement is the only real fix.
Disable Remote Web Management under Advanced Settings, clear any allowed remote IP, then verify from outside: turn Wi-Fi off on your phone, look up your home public IP, and try to open it over http and https on mobile data. Nothing should answer. Repeat that check after each firmware update, because an update can restore a default you had changed.