I'm thinking of developing application, or probably extending AFWall+ app
What I'm missing on Android is possibility to confirm each connection from each application, simply blocking the application on some networks is already solved, but I want to have very specific control over what URLs/IPs the application is talking to.
I've made proposal https://github.com/ukanth/afwall/issues/269
Which is generally the same functionality as provided on OS X from Little Snitch application firewall. Possibility to create time-domain-port rules per application (unix uid/guid)
I'm thinking about using some kind of mashup of IPTables and possibly intercepting
sock_create syscall. It will be open-source and free, if anybody wants to jump on the bandwagon, you're welcome.
So the question is, is there anything like this already done? Even paid applications.
I haven't really found anything like that, so I'd just like to be sure, before jumping into development of such large thing :-)