OK, I've downloaded and run LinReb (nice software)
I think I now know what your problem is: It's Linreb's lack of proxy feature.
This happens because the reader is set to use an HTTP proxy (which should run in a local IP). In this case, ALL HTTP requests are handled by Linreb which runs in that specific IP

ort. So, if the requests are made to those known ETI servers (hardcoded in the readers), Linreb responds. If they are made to different domains (e.g. google.com) Linreb doesn't do anything because it's coded in that way; and because it's also not coded to act as a proxy, it doesn't even forward those requests to the required server onn the internet.
There are two "workarounds for this"
1- Use an HTTP proxy in the reader that points to a separate proxy server that handles web requests AND forwards the ones to ETI server to LINREB.
2- Don't set use proxy settings on the reader, run Linreb in port 80, and change the HOSTS files to forward ETI domain to Linreb in local IP. This is the approach that I coded before (By the way... I've found one old version of it).
Does this help you clear all out?
Good luck!