<input type="hidden" name="dst" value="$(link-orig)">
to this line:
<input type="hidden" name="dst" value="http://your.web.server">
(you should correct the link to point to your server)
• To erase the cookie on logoff, in the page containing link to the logout (for example, in
status.html) change:
open('$(link-logout)', 'hotspot_logout', ...
to this:
open('$(link-logout)?erase-cookie=on', 'hotspot_logout', ...
or alternatively add this line:
<input type="hidden" name="erase-cookie" value="on">
before this one:
<input type="submit" value="log off">
An another example is making HotSpot to authenticate on a remote server (which may, for
example, perform creditcard charging):
• Allow direct access to the external server in walled-garden (either HTTP-based, or IP-based)
• Modify login page of the HotSpot servlet to redirect to the external authentication server. The
external server should modify RADIUS database as needed
Here is an example of such a login page to put on the HotSpot router (it is redirecting to
https://auth.example.com/login.php, replace with the actual address of an external
authentication server):
<html> <title>...</title> <body> <form name="redirect"
action="https://auth.example.com/login.php" method="post"> <input type="hidden"
name="mac" value="$(mac)"> <input type="hidden" name="ip" value="$(ip)"> <input
type="hidden" name="user" value="$(username)"> <input type="hidden"
name="link-login" value="$(link-login)"> <input type="hidden" name="link-orig"
value="$(link-orig)"> <input type="hidden" name="error" value="$(error)"> </form>
<script language="JavaScript"> <!-- document.redirect.submit(); //--> </script>
</body> </html>
• The external server can log in a HotSpot client by redirecting it back to the original HotSpot
servlet login page, specifying the correct username and password
Here is an example of such a page (it is redirecting to https://hotspot.example.com/login,
replace with the actual address of a HotSpot router; also, it is displaying www.mikrotik.com
after successful login, replace with what needed):
<html> <title>Hotspot login page</title> <body> <form name="login"
action="https://hotspot.example.com/login" method="post"> <input type="text"
name="username" value="demo"> <input type="password" name="password" value="none">
<input type="hidden" name="domain" value=""> <input type="hidden" name="dst"
value="http://www.mikrotik.com/"> <input type="submit" name="login" value="log in">
</form> </body> </html>
• Hotspot will ask RADIUS server whether to allow the login or not. If not allowed, alogin.html
page will be displayed (it can be modified to do anything!). If not allowed, flogin.html (or
login.html) page will be displayed, which will redirect client back to the external
Page 526 of 695
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