CA2537882A1 - High-performance network content analysis platform - Google Patents

High-performance network content analysis platform Download PDF

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Publication number
CA2537882A1
CA2537882A1 CA002537882A CA2537882A CA2537882A1 CA 2537882 A1 CA2537882 A1 CA 2537882A1 CA 002537882 A CA002537882 A CA 002537882A CA 2537882 A CA2537882 A CA 2537882A CA 2537882 A1 CA2537882 A1 CA 2537882A1
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Canada
Prior art keywords
network data
data
information
client
network
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Granted
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CA002537882A
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French (fr)
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CA2537882C (en
Inventor
Gene Savchuk
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Fidelis Security Systems Inc
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Individual
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Publication of CA2537882A1 publication Critical patent/CA2537882A1/en
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Publication of CA2537882C publication Critical patent/CA2537882C/en
Expired - Fee Related legal-status Critical Current
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/14—Network architectures or network communication protocols for network security for detecting or protecting against malicious traffic
    • H04L63/1408—Network architectures or network communication protocols for network security for detecting or protecting against malicious traffic by monitoring network traffic
    • H04L63/1416—Event detection, e.g. attack signature detection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/02—Network architectures or network communication protocols for network security for separating internal from external traffic, e.g. firewalls
    • H04L63/0227—Filtering policies
    • H04L63/0245—Filtering by information in the payload

Abstract

One implementation of a method reassembles complete client-server conversation streams, applies decoders and/or decompressors, and analyzes the resulting data stream using multi-dimensional content profiling and/or weighted keyword-in-context. The method may detect the extrusion of the data, for example, even if the data has been modified from its original form and/or document type. The decoders may also uncover hidden transport mechanisms such as, for example, e-mail attachments. The method may further detect unauthorized (e.g., rogue) encrypted sessions and stop data transfers deemed malicious. The method allows, for example, for building 2 Gbps (Full-Duplex)-capable extrusion prevention machines.

Claims (23)

1. A method comprising:
receiving network data;
reassembling a client-server communications session from the network data; and detecting, through the network data, leaks of information by analyzing the client-server communications session using at least one of (i) statistical and (ii) keyword -based detection.
2. The method of claim 1, further comprising decoding the client-server communications session to detect and inspect one or more application protocols, and wherein the client-server communications session includes the one or more application protocols.
3. The method of claim 2, wherein the one or more application protocols includes at least one of (i) pdf, (ii) http, (iii) e-mail, (iv) e-mail attachment, (v) ftp, (vi) zip, (vii) ms word, (viii) ms excel, (ix) html, (x) xml, (xi) gzip, (xii) tar and (xiii) plain text.
4. The method of claim 1, wherein the client-server communications session includes at least one of (i) TCP, (ii) IP and (iii) ethernet.
5. The method of claim 1, wherein the statistical-based detection includes multi-dimensional content profiling.
6. The method of claim 1, wherein the statistical-based detection includes domain-specific high-level features.
7. The method of claim 6, wherein the domain-specific high-level features includes at least one of (i) social security numbers, (ii) credit card numbers, (iii) postal addresses and (iv) e-mail addresses.
8. The method of claim 1, wherein the keyword-based detection includes one or more weighted keywords.
9. The method of claim 1, wherein the information includes a digital asset.
10. The method of claim 1, further including analyzing the network data so as to detect any unauthorized encrypted session.
11. A method comprising:
receiving network communications; and preventing an unauthorized and/or malicious transfer, through the network communications, of data by providing at least content reassembly, scanning and recognition to the network communications in real time.
12. The method of claim 11, wherein the content scanning and recognition includes multi-dimensional content profiling.
13. The method of claim 11, wherein the content scanning and recognition is tailored to local data.
14. The method of claim 11, wherein the method is capable of preventing the unauthorized and/or malicious transfer, through the network communications, of data on fully saturated Gigabit speeds.
15. A method comprising:
receiving network data; and preventing, through the network data, leaks of information by at least applying multi-dimensional content profiling.
16. The method of claim 15, wherein the information includes a digital asset.
17. The method of claim 15, wherein the multi-dimensional content profiling takes into account the structure of the information.
18. A machine-readable medium having encoded information, which when read and executed by a machine causes a method comprising:
receiving network data;
reassembling a client-server communications session from the network data; and detecting, through the network data, leaks of information by analyzing the client-server communications session using at least one of (i) statistical and (ii) keyword -based detection.
19. A machine-readable medium having encoded information, which when read and executed by a machine causes a method comprising:
receiving network communications; and preventing an unauthorized and/or malicious transfer, through the network communications, of data by providing at least content reassembly, scanning and recognition to the network communications in real time.
20. A machine-readable medium having encoded information, which when read and executed by a machine causes a method comprising:
receiving network data; and preventing, through the network data, leaks of information by at least applying multi-dimensional content profiling.
21. An apparatus comprising:
a receiver to receive network data;
a processor, coupled to the receiver, to (i) reassemble a client-server communications session from the network data and (ii) detect, through the network data, leaks of information by analyzing the client-server communications session using at least one of (i) statistical and (ii) keyword -based detection.
22. An apparatus comprising:
a receiver to receive network communications; and a processor, coupled to the receiver, to prevent an unauthorized and/or malicious transfer, through the network communications, of data by providing at least content reassembly, scanning and recognition to the network communications in real time.
23. An apparatus comprising:
a receiver to receive network data; and a processor, coupled to the receiver, to prevent, through the network data, leaks of information by at least applying multi-dimensional content profiling.
CA2537882A 2003-09-10 2004-09-09 High-performance network content analysis platform Expired - Fee Related CA2537882C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/658,777 2003-09-10
US10/658,777 US7467202B2 (en) 2003-09-10 2003-09-10 High-performance network content analysis platform
PCT/US2004/029503 WO2005027539A2 (en) 2003-09-10 2004-09-09 High-performance network content analysis platform

Publications (2)

Publication Number Publication Date
CA2537882A1 true CA2537882A1 (en) 2005-03-24
CA2537882C CA2537882C (en) 2011-04-05

Family

ID=34226847

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2537882A Expired - Fee Related CA2537882C (en) 2003-09-10 2004-09-09 High-performance network content analysis platform

Country Status (8)

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US (2) US7467202B2 (en)
EP (1) EP1665818B1 (en)
JP (2) JP2007507763A (en)
CN (1) CN1965306B (en)
CA (1) CA2537882C (en)
HK (1) HK1105031A1 (en)
IL (1) IL174163A (en)
WO (1) WO2005027539A2 (en)

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