Packet Crafting To Exploit Firewall Weaknesses

Hping

Earlier Hping was used as a security tool. Now it is used as a command-line oriented TCP/IP packet analyzer or assembler. You can use this for Firewall testing, advance port scanning, network testing by using fragmentation, TOS and different other protocols.

Scapy

It is a powerful and interactive packet manipulation program. Scapy has the capability to decode or forge the packets of a large number of protocols at a time. One of the best feature is that it can confuse the process of decoding and interpreting.

Netcat

Netcat is a simple Unix utility program. This program has the capability to read and write data across network connections and it does so by using UDP or TPC protocol. It was created as a reliable back-end tool.

Yersinia

Not all the network protocols are powerful. In order to take advantage of the weakness of certain network protocols Yersinia is created. It is a full-proof framework that analyzes and tests the deployed networks and systems.

Nemesis

It is a command-line crafting and injecting utility tool used for network packets. This program works for both Unix and Windows operating systems. This is a well-suited tool for testing Network, Intrusion Detection System, IP Stacks, Firewalls and many others

Socat

This is again a command-line based utility tool. It has the capability to establish a two bidirectional byte streams through which it transfers data. In this tool streams can be constructed from a large set of different data sinks.