Patches of mycelium (@Home and @Org)¶

Inside a single network the routing is chattier and even more trusting. RIP, OSPF, IS-IS and EIGRP announce themselves to their neighbours and believe what comes back; first-hop redundancy protocols like VRRP elect a gateway on the strength of a number anyone on the segment can claim; a static route is only as honest as whoever last edited it. Each local routing protocol is an attack surface in its own right, prone to the same failure Rootways meets at internet scale, except that here it hands over the map of one organisation rather than a slice of the internet.