Many servers and network devices like routers and switches provides features like ACLs, IP Filters, Firewall rules and so on to give access to their Services only to particular network addresses (usually Administrator's workstations).The main purpose of this program is to scan for IP restrictions set for a particular service on a host. It combines "ARP Poisoning" and "Half-Scan" techniques and tries totally spoofed TCP connections to the selected port of the target. IRS is not a port scanner but a "valid source IP address" scanner for a given service.

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IRS v2.0 for Windows NT/2000/XP


IRS uses the Winpcap Driver; please check the documentation on their site.


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