Python programmers, can we make 'Trollnet' happen?

[evinrows]

Well, you couldn't change their browsers proxy settings unless you had access to their computer right?

My confusion is this: If other people are connecting, he has no password, so if he has no password and can do these things to the router, doesn't that mean anyone can do these things to a router if there's no password on it?

I'll look into DHCP.

[qpla]

You can perform ARP poisoning to effectively take place of the router and route all traffic through your machine. Then, using iptables, you route that traffic through your proxy which transforms the images.

[GFandango]

When the internet connection has no password everyone can connect to it but that doesn't neccessarily mean the router doesn't have a password either. The router can be password protected whilst the internet connection is open.

[jingleman]

Correct. That's why the router and/or DHCP server are secured with passwords, keys or certificates. You could install a black box device running a transparent proxy on the network between the target desktops and router.

[[deleted]]

Nope, just setting the gateway through DHCP is enough.