By Ryan C. Barnett

Defending your internet purposes opposed to hackers and attackers

The top-selling publication Web program Hacker's Handbook confirmed how attackers and hackers determine and assault susceptible stay net functions. This new Web program Defender's Cookbook is the appropriate counterpoint to that ebook: it exhibits you the way to defend. Authored through a hugely credentialed shielding protection professional, this new ebook information protective defense equipment and will be used as courseware for education community protection body of workers, internet server directors, and safeguard consultants.

Each "recipe" indicates you the way to realize and shield opposed to malicious habit and offers operating code examples for the ModSecurity net software firewall module. themes comprise deciding upon vulnerabilities, environment hacker traps, protecting varied entry issues, imposing software flows, and masses more.
• offers sensible strategies for detecting internet assaults and malicious habit and protecting opposed to them
• Written via a preeminent authority on internet software firewall know-how and net software protection tactics 
• deals a sequence of "recipes" that come with operating code examples for the open-source ModSecurity net program firewall module

Find the instruments, options, and specialist info you must realize and reply to net software assaults with Web program Defender's Cookbook: struggling with Hackers and holding Users.

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Additional info for Web Application Defender's Cookbook: Battling Hackers and Protecting Users

Example text

Encrypt_response_body_links: Processed [0] frame src, [0] encrypted. encrypt_response_body_links: Processed [0] form actions, [0] encrypted. encrypt_response_body_links: Processed [33] links, [27] encrypted. inject_encrypted_response_body: Detected encoding type [UTF-8]. inject_encrypted_response_body: Using content-type [UTF-8]. inject_encrypted_response_body: Copying XML tree from CONV to stream buffer [8085] bytes. 17 18 Preparing the Battle Space Recipe 1-2 inject_encrypted_response_body: Stream buffer [8750].

Conf file. 103] ModSecurity: Warning. *)” at TX:0. php”] [unique_id “Tz6@tMCoqAEAAM5lMk0AAAAA”] This entry tells us that a SQL Injection attack was identified on the inbound request. We see that the total anomaly score is 78 and that the subcategory score of SQLi is 28. This tells us that a number of SQL Injection rules were triggered. log data for this transaction. Pros and Cons of Anomaly Scoring Detection Mode Pros • Increased confidence in blocking. Because more detection rules contribute to the anomaly score, the higher the score, the more confidence you can have in blocking malicious transactions.

Two different anomaly scoring thresholds must be set. conf file. conf file: # # -=[ Anomaly Scoring Threshold Levels ]=# # These variables are used in macro expansion in the 49 inbound # blocking and 59 outbound blocking files. 12 or higher to use macro # expansion in numeric operators. If you have an earlier version, # edit the 49/59 files directly to set the appropriate anomaly # score levels. # # You should set the score to the proper threshold you would # prefer. If set to “5” it will work similarly to previous Mod # CRS rules and will create an event in the error_log file if # there are any rules that match.

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