Ehab Al-Shaer's Automated Firewall Analytics: Design, Configuration and PDF

By Ehab Al-Shaer

ISBN-10: 3319103709

ISBN-13: 9783319103709

ISBN-10: 3319103717

ISBN-13: 9783319103716

This e-book offers a accomplished and in-depth learn of computerized firewall coverage research for designing, configuring and handling allotted firewalls in large-scale enterpriser networks. It offers methodologies, suggestions and instruments for researchers in addition to execs to appreciate the demanding situations and increase the state of the art of handling firewalls systematically in either examine and alertness domain names. Chapters discover set-theory, handling firewall configuration globally and always, entry keep watch over record with encryption, and authentication akin to IPSec guidelines. the writer additionally finds a high-level service-oriented firewall configuration language (called turn) and a technique and framework for designing optimum allotted firewall structure. The chapters illustrate the options, algorithms, implementations and case reports for every method. automatic Firewall Analytics: layout, Configuration and Optimization is acceptable for researchers and execs operating with firewalls. Advanced-level scholars in desktop technology will locate this fabric appropriate as a secondary textbook or reference.

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This booklet offers a complete and in-depth examine of automatic firewall coverage research for designing, configuring and coping with allotted firewalls in large-scale enterpriser networks. It offers methodologies, options and instruments for researchers in addition to execs to appreciate the demanding situations and increase the cutting-edge of coping with firewalls systematically in either study and alertness domain names.

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Additional resources for Automated Firewall Analytics: Design, Configuration and Optimization

Sample text

We noticed that for small and mid-size networks (such as Network 1 that has 8 sub-domains and Network 2 that has 12 sub-domains), the processing time ranges from 3 to 40 s. However, in case of large networks (such as Networks 3 and Network 4 that have 18 and 27 sub-domains respectively), the firewall anomaly discovery requires much higher processing time ranging from 11 to 180 s depending on the rule complexity. The increase in the processing time as the network size increases is due to the fact that the complexity of our algorithm is dependant on the total number of paths between sub-domains in the network.

The function BuildPolicyBDD(p, a) is used to derive the BDD of the policy expression that resembles the condition for policy p taking action a. The function BuildRuleBDD(r) constructs the BDD for the filtering condition of rule r. 6) Fig. action = action do 4: C ← BuildRuleBDD(rule) 5: test_list ← access_list 6: RemoveRule(test_list, rule) 7: S ← BuildPolicyBDD(test_list, action) 8: con f lict ← NOCONFLICT 9: if S = S then 10: test ← (C → S ) 11: if test = true then 12: con f lict ← REDUNDANCY 13: else {test = true} 14: con f lict ← SHADOWING 15: end if 16: else {S = S} 17: test ← (C → ¬S ) 18: if test = true then 19: con f lict ← EXCEPTION 20: else {test = true)} 21: con f lict ← CORRELATION 22: end if 23: end if 24: for all test_rule in test_list do 25: relation ← GetRuleRelation(rule,test_rule) 26: if con f lict = NOCONFLICT and relation = DISTINCT then 27: print con f lict between rule and test_rule 28: break 29: end if 30: end for 31: end for 32: end for as the test BDD (S ) (lines 2, 4–6).

First, the sequential rule matching and multi-trigger semantics make policy verification of single or distributed IPSec policies a very complex and error-prone task, particularly when large number of rules and devices exist. Second, the interaction between different IPSec policies, such as cascaded protection and overlapping tunnels, can lead to inefficient or incorrect data protection. ) poses another challenge when modeling and analyzing IPSec policies. Rule conflicts can occur due to IPSec misconfiguration within a single policy (called intra-policy conflicts) or due to the inconsistency between policies in different devices (called inter-policy conflicts).

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Automated Firewall Analytics: Design, Configuration and Optimization by Ehab Al-Shaer


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