How to change captive portal TTL value ???
Users connected to captive portal are sharing internet via bluetooth . I want to stop that sharing . As a solution i thought to change the TTL ..But m unable to find the way out to change the TTL. Is it possible in pfsense ?
Gertjan last edited by Gertjan
You want to 'reset' the TTL info in the coming-back traffic, initiated by the portal visitors, to 1, so it should be discarded by the next hop, or, the device acts as a router / shares the connection.
All returning packets have to be somehow mangled.
That would actually work I guess.
But first you have to write that stateful firewall, or modify an exiting one, that actually permits you to do so.
Look here, from 2005 : https://lists.freebsd.org/pipermail/freebsd-net/2005-April/007098.html
edit : pfSense, the captive portal, uses ipfw. All you need is that user-land program.