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Linux Firewalls by Michael Rash

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AfterGlow

AfterGlow specializes in visualizing data as link graphs and also (in the latest release) as tree maps. A link graph is a representation of nodes and edges that conveys relationships between the nodes. Such a graph is well-suited to displaying data such as IP addresses and port numbers. AfterGlow is developed by Raffael Marty, founder of the security visualization website http://www.secviz.org, which contains discussions and example visualizations of everything from SSH connections to iptables policies; several AfterGlow users contribute visualizations to the site.

The psad interface to AfterGlow is similar to the interface with Gnuplot. For AfterGlow, the --CSV-fields command-line argument is once again important in order to specify ...

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