By monitoring the TTL response to detection of a remote network topology-vulnerability warning-the black bar safety net

! /Article/UploadPic/2015-4/2 0 1 5 4 1 6 1 0 4 9 5 8 9 3 0. png Sometimes, the network administrator can configure an internal network to achieve a single host to other hosts on different levels of communication. A single Internet Protocol IP address may be representative of many on the internal...