Fragroute/Fragrouter : A network intrusion detection evasion toolkit
Fragrouter is a one-way fragmenting router – IP packets get sent from the attacker to the Fragrouter, which transforms them into a fragmented data stream to forward to the victim. Many network IDS are unable or simply don’t bother to reconstruct a coherent view of the network data (via IP fragmentation and TCP stream reassembly), as discussed in this classic paper. Fragrouter helps an attacker launch IP-based attacks while avoiding detection. It is part of the NIDSbench suite of tools by Dug Song. Fragroute is a similar tool which is also by Dug Song.
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