Hacking For Beginners – Manthan Desai

2010

Detecting ‘live’ systems on target network

Why Detecting ‘live’ systems on tagret network ?



To determine the perimeter of the target network /systemTo facilitate network mappingTo build an inventory of accessible systems on target network

Tools used for this



War DialersPing Utilities

War Dialers



A war dialer is a tool used to scan a large pool of telephone numbers to detect vulnerable modems to provideaccess to the system.A demon dialer is a tool used to monitor a specific phone number and target its modem to gain access to thesystem.Threat is high in systems with poorly configured remote access providing entry to larger networks.Tools include THC-Scan, ToneLoc, TBA etc.

The term war dialing implies the exploitation of an organization's telephone, dial, and private branch exchange (PBX)systems to infiltrate the internal network and use of computing during the actual attack. It may be surprisingwhy we are discussing war dialing here as more PBX systems are with increased security configurations. However,the fact remains that there are as many insecure modems out can be compromised to gain access into thetarget system. What had initially caught the fancy of hackers in the movie 'war games', still manages to find carriersleading to compromise of systems. The war dialer in War Games is not very sophisticated as it only finds phone numberswhich are suspected to be computer dial-in lines. A more aggressive version might actually attempt to determine theoperating system, and a very aggressive version might attempt to perform some automated break -in attempts itself. If Areal scanner with this functionality will to analyze the carrier information, the negotiation and presence ofprotocols and/or banners to attempt determine the remote system. It will then attempt to use defaultusername/password combinations for system.

www.hackingtech.co.tv

Page 81