So I have two routers on my home network: one is provided by my ISP, and the other is my private router. Router A- ISP router: 192.168.1.x router B- private router: 192.168.2.x
Clients on my router A's LAN network cannot ping clients on my B's network. However, clients on B can ping clients on A. Does this provide any security, if I allow friends/visitors to use my ISP's router? Or is this only security through obscurity. So if an attacker managed to get into router A, can they see clients on router B easily?