{"id":57,"date":"2006-10-15T16:58:47","date_gmt":"2006-10-15T21:58:47","guid":{"rendered":"http:\/\/raffy.ch\/blog\/2006\/10\/15\/afterglow-and-fan-out-filtering\/"},"modified":"2007-02-11T03:33:18","modified_gmt":"2007-02-11T08:33:18","slug":"afterglow-and-fan-out-filtering","status":"publish","type":"post","link":"https:\/\/raffy.ch\/blog\/2006\/10\/15\/afterglow-and-fan-out-filtering\/","title":{"rendered":"AfterGlow and Fan Out Filtering"},"content":{"rendered":"<p>Yes, I am still playing around with visualization. In fact, I am writing a Chapter for a book. It&#8217;s going to be about using line graphs and treemaps to visualize firewall and IDS logs.<\/p>\n<p>I just realized something that you have to be careful about when using AfterGlow&#8217;s fan-out filtering!<\/p>\n<p>If you have a graph where you are going to filter based on the source-node&#8217;s fan-out, you will still see all the eventNode->targetNode pairs! It won&#8217;t restrict them to only that ones that are from the remaining source nodes! Here is an example:<\/p>\n<p>My log contains thousands of line, but only these three entries should remain after doing a (-f 2) filtering:<\/p>\n<p>12.108.194.82,nounce,111.222.69.44|113<br \/>\n12.108.194.82,block,111.222.69.44|113<br \/>\n12.108.194.82,pass,111.222.69.44|25<\/p>\n<p>However, the graph will look as this:<\/p>\n<p><img decoding=\"async\" width=\"450\" src=\"http:\/\/raffy.ch\/blog\/fanout1.gif\" \/><\/p>\n<p>What you can do is using the -p 1 option: afterglow.pl -p 1 -f 2 which will result in the desired graph:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"620\" height=\"821\" src=\"http:\/\/raffy.ch\/blog\/fanout2.gif\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Yes, I am still playing around with visualization. In fact, I am writing a Chapter for a book. It&#8217;s going to be about using line graphs and treemaps to visualize firewall and IDS logs. I just realized something that you have to be careful about when using AfterGlow&#8217;s fan-out filtering! If you have a graph [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-57","post","type-post","status-publish","format-standard","hentry","category-visualization"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/raffy.ch\/blog\/wp-json\/wp\/v2\/posts\/57","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/raffy.ch\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/raffy.ch\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/raffy.ch\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/raffy.ch\/blog\/wp-json\/wp\/v2\/comments?post=57"}],"version-history":[{"count":0,"href":"https:\/\/raffy.ch\/blog\/wp-json\/wp\/v2\/posts\/57\/revisions"}],"wp:attachment":[{"href":"https:\/\/raffy.ch\/blog\/wp-json\/wp\/v2\/media?parent=57"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/raffy.ch\/blog\/wp-json\/wp\/v2\/categories?post=57"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/raffy.ch\/blog\/wp-json\/wp\/v2\/tags?post=57"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}