The article below shows how some modems can be reset and/or rebooted by malicious web pages because they don’t have any password protection
www.gironsec.com/blog/2015/01/owning_modems_and_routers_silently/
My Surf SOHO has a single wired WAN connection. The modem is at 192.168.100.1 which is reachable from the LAN. I set an outbound firewall rule to block this IP address and it works fine.
My question is what would happen if I blocked access to anything starting with 192.168 in an outbound firewall rule?
Specifically, would I still be able to access my router which has a 192.168.4.4 IP address?
And would I be able to access my printer which is at 192.168.4.5?
I ask because my next modem may have a different 192.168.x.x IP address.
Obviously, I am afraid to test this for fear of locking myself out. Thanks.