Note: this post is just a public draft.
1) open Firefox
2) visit your router's administration web page.
3) Open debugger.
4) Log in
5) on the Network tab, right click on the first entry (usually index.php or whatever) and under "Copy" select "Copy as cURL"
6) open konsole or whatever terminal you preffer
7) write watch -n 30 and a double quote, then paste and add -k -o /dev/null and close the double quotes
8) hit enter to run watch and go back to your browser.
leave your web admin tab open, otherwise you will have to repeat all the steps.
this trick might be useful on every site that makes your session expire via ajax calls.
