Integrated development environment (IDE) for network security configuration files

• US 9,787,722 B2
• Filed: 06/30/2015
• Issued: 10/10/2017
• Est. Priority Date: 05/19/2015
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Knjazihhin, Denis, Dotan, Yedidya, Siswick, Zachary D., Duane, Christopher, Hollingshead, Daniel
• Primary Examiner(s): Siddiqi, Mohammad A
• Application Number:
  US14/755,228
• Publication Number:
  US 20160344773A1
• Time in Patent Office: 833 Days
• CPC Class Codes: G06F 16/148 File search processing
• CPC Class Codes: G06F 16/285 Clustering or classification
• CPC Class Codes: G06F 21/57 Certifying or maintaining trusted computer platforms, e.g. secure boots or power-downs, version controls, system software checks, secure updates or assessing vulnerabilities
• CPC Class Codes: G06F 21/604 Tools and structures for managing or administering access control systems
• CPC Class Codes: H04L 63/20 for managing network security; network security policies in general filtering policies H04L63/0227

Abstract

An integrated development environment (IDE) preprocesses a configuration file including security rules. The preprocessing maps object names in the security rules to associated object values based on object definitions for the object names. Responsive to the configuration file being opened in an editor, the IDE provides the editor with access to preprocessing results. Each security rule in the opened configuration file is searched for object names. The IDE links each object name found in the search to an associated object value mapped thereto by the mapping performed during the preprocessing. The IDE receives a selection of an object name in a security rule of the opened configuration file and generates for display the associated object value linked to the selected object name.

Claims

1. A method comprising:

in a computer-implemented integrated development environment;

preprocessing a configuration file including security rules, each security rule including multiple security rule parameters to cause a network security device to apply a network access control, including either a block access or an allow access, when a source attempts to access a destination, at least one of the destination or the source in some of the security rules represented as a respective object name, each object name associated with an object value defined in an object definition in the configuration file, wherein each of the source, the destination, and the object value is associated with a network address or a range of network addresses, the preprocessing including;

mapping each object name to the associated object value based on the object definition for that object name; and

classifying the security rules into (i) one or more identical classifications each including security rules that are identical to each other, and (ii) one or more similar classifications each including security rules that are similar but not identical to each other, and storing for each classification an index to access the classification, file locations of the security rules in the classification, and either an identical indicator or a similar indicator for the classification;

responsive to the configuration file being opened in an editor configured to interact with the security rules, providing the editor with access to preprocessing results;

searching each security rule in the opened configuration file for object names therein;

linking each object name found in the searching to the associated object value mapped thereto by the mapping performed during the preprocessing; and

receiving a selection of a particular object name in a security rule of the opened configuration file and generating for display the associated object value linked to the selected object name.

2. The method of claim 1, wherein the preprocessing includes:

tokenizing the security rule parameters, including the object names, of each security rule into security rule tokens based on a security rule grammar associated with a security rule syntax; and

parsing the security rule tokens, including the object names into a parser tree based on the security rule syntax,

wherein the mapping includes mapping each object name parsed into the parser tree to the associated object value based on the object definition for the each object name.

3. The method of claim 1, further comprising:

comparing the security rule parameters of each security rule in the opened configuration file to a dictionary of prohibited or potentially dangerous security rule parameters; and

if the comparing indicates a match between a first security rule parameter in a given security rule and one of the prohibited or potentially dangerous security rule parameters of the dictionary, generating for display a warning associated with the given security rule.

4. The method of claim 1, wherein the classifying includes classifying the security rules based on commonality between the security rules, each classification including the security rules that share the commonality for that classification, and the method further comprises:

receiving a selection of a security rule in the opened configuration file;

responsive to the selection of the security rule, determining whether the selected security rule is classified into any of the classifications; and

if it is determined that the selected security rule is classified into one of the classifications, generating for display the security rules in the one of the classifications.

5. The method of claim 4, wherein the generating for display further includes generating for display an indication of the commonality associated with the one of the classifications.

6. The method of claim 4, wherein:

the classifying the security rules into the one or more identical classifications is based on identicality between the security rules; and

the classifying the security rules into the one or more similar classifications is based on similarity but not identicality between the security rules.

7. The method of claim 4, further comprising preprocessing one or more additional configuration files such that the classifying includes classifying the security rules across the configuration file and the one or more additional configuration files into classifications of the security rules based on commonality between the security rules in the configuration file and the one or more additional configuration files, wherein the generating for display further includes generating for display configuration file location information associated with each of the security rules in the one of the classifications.

8. The method of claim 1, further comprising:

performing a regular expressions search of the security rule parameters of each security rule in the opened configuration file for matches to regular expressions defined for the configuration file; and

for each security rule parameter found to match one of the regular expressions, generating for display a visual indication associated with the security rule parameter found to match the one of the regular expressions.

9. The method of claim 8, wherein:

the performing the regular expression search includes searching the security rule parameters of each security rule for an object or object group designator followed by an object name; and

for each found object or object group designator, generating for display a visual object or object group indication to visually differentiate the found object or object group designator from other security rule parameters that are not object or object group designators.

10. The method of claim 8, wherein:

wherein the performing the regular expression search further includes searching the opened configuration file for delineated remarks interspersed among the security rules and that have no effect on the network security device; and

for each found remark, generating for display a visual remark indication to visually differentiate the found remark from the security rules.

11. An apparatus comprising:

a network interface unit configured to enable communications over a network; and

a processor, coupled to the network interface unit, configured to, in a computer implemented integrated development environment;

preprocess a configuration file including security rules, each security rule including multiple security rule parameters to cause a network security device to apply a network access control, including either a block access or an allow access, when a source attempts to access a destination, at least one of the destination or the source in some of the security rules represented as a respective object name, each object name associated with an object value defined in an object definition in the configuration file, wherein each of the source, the destination, and the object value is associated with a network address or a range of network addresses, wherein the processor is configured to;

map each object name to the associated object value based on the object definition for that object name; and

classify the security rules into (i) one or more identical classifications each including security rules that are identical to each other, and (ii) one or more similar classifications each including security rules that are similar but not identical to each other, and store for each classification an index to access the classification, file locations of the security rules in the classification, and either an identical indicator or a similar indicator for the classification;

responsive to the configuration file being opened in an editor configured to interact with the security rules, provide the editor with access to preprocessing results;

search each security rule in the opened configuration file for object names therein;

link each object name found in the searching to the associated object value mapped thereto by the mapping performed during the preprocessing; and

receive a selection of a particular object name in a security rule of the opened configuration file and generating for display the associated object value linked to the selected object name.

12. The apparatus of claim 11, wherein the processor is configured to classify by classifying the security rules based on commonality between the security rules, each classification including the security rules that share the commonality for that classification, and the processor is further configured to:

receive a selection of a security rule in the opened configuration file;

responsive to the selection of the security rule, determine whether the selected security rule is classified into any of the classifications; and

if it is determined that the selected security rule is classified into one of the classifications, generate for display the security rules in the one of the classifications.

13. The apparatus of claim 12, wherein the processor is further configured to classify by:

classifying the security rules into the one or more identical classifications based on identicality between the security rules; and

classifying the security rules into the one or more similar classifications based on similarity but not identicality between the security rules.

14. The apparatus of claim 11, wherein the processor is further configured to:

perform a regular expressions search of the security rule parameters of each security rule in the opened configuration file for matches to regular expressions defined for the configuration file; and

for each security rule parameter found to match one of the regular expressions, generate for display a visual indication associated with the security rule parameter found to match the one of the regular expressions.

15. A method comprising:

in a computer implemented integrated development environment;

preprocessing a configuration file including security rules, each security rule including multiple security rule parameters to cause a network security device to apply a network access control, including either a block access or an allow access, when a source attempts to access a destination, the source and the destination being associated with a network address or a range of network addresses, the preprocessing including classifying the security rules into (i) one or more identical classifications each including security rules that are identical to each other, and (ii) one or more similar classifications each including security rules that are similar but not identical to each other, and storing for each classification an index to access the classification, file locations of the security rules in the classification, and either an identical indicator or a similar indicator for the classification;

responsive to the configuration file being opened in an editor configured to interact with the security rules, providing the editor with access to preprocessing results;

receiving a selection of a security rule in the opened configuration file;

responsive to the selection, determining whether the selected security rule is classified into any of the classifications; and

if it is determined that the selected security rule is classified into one of the classifications, generating for display the security rules in the one of the classifications.

16. The method of claim 15, wherein:

the classifying the security rules into the one or more identical classifications is based on identicality between the security rules; and

the classifying the security rules into the one or more similar classifications is based on similarity but not identicality between the rules.

17. The method of claim 16, wherein:

the generating for display further includes generating for display, for each security rule in the one of the classifications, an indication that the security rule is identical or similar to the selected security rule, and a location in the configuration file where the security rule is found.

18. The method of claim 17, further comprising preprocessing one or more additional configuration files, wherein:

the classifying further includes classifying the security rules across the configuration file and one or more additional configuration files into classifications based on commonality between the security rules in the configuration file and one or more additional configuration files; and

the generating for display further includes generating for display configuration file location information associated with each of the security rules in the one of the classifications.