* [Blog](https://www.paloaltonetworks.com/blog)
* [Palo Alto Networks](https://www.paloaltonetworks.com/blog/corporate/)
* [Firewall](https://www.paloaltonetworks.com/blog/category/firewall/)
* Traffic Analysis: P2P Fou...

# Traffic Analysis: P2P Found 92% of the Time

[](https://www.facebook.com/sharer/sharer.php?u=https%3A%2F%2Fwww.paloaltonetworks.com%2Fblog%2F2009%2F07%2Ftraffic-analysis-p2p-found-92-of-the-time%2F)  
[](https://twitter.com/share?text=Traffic+Analysis%3A+P2P+Found+92%25+of+the+Time&url=https%3A%2F%2Fwww.paloaltonetworks.com%2Fblog%2F2009%2F07%2Ftraffic-analysis-p2p-found-92-of-the-time%2F)  
[](https://www.linkedin.com/shareArticle?mini=true&url=https%3A%2F%2Fwww.paloaltonetworks.com%2Fblog%2F2009%2F07%2Ftraffic-analysis-p2p-found-92-of-the-time%2F&title=Traffic+Analysis%3A+P2P+Found+92%25+of+the+Time&summary=&source=)  
[](https://www.paloaltonetworks.com//www.reddit.com/submit?url=https://www.paloaltonetworks.com/blog/2009/07/traffic-analysis-p2p-found-92-of-the-time/&ts=markdown)  
\[\](mailto:?subject=Traffic Analysis: P2P Found 92% of the Time)  
Link copied  
By [Matt Keil](https://www.paloaltonetworks.com/blog/author/matt/?ts=markdown "Posts by Matt Keil")  
Jul 30, 2009  
3 minutes  
[Firewall](https://www.paloaltonetworks.com/blog/category/firewall/?ts=markdown)  
[application control](https://www.paloaltonetworks.com/blog/tag/application-control/?ts=markdown)  
[application usage \& risk report](https://www.paloaltonetworks.com/blog/tag/application-usage-risk-report/?ts=markdown)  
[Firewall](https://www.paloaltonetworks.com/blog/tag/firewall/?ts=markdown)

The most recent discovery of the [first lady's safe house (Laura Bush) and a detailed list of the civilian nuclear complex, including precise locations of weapons grade nuclear fuel](http://voices.washingtonpost.com/securityfix/2009/07/report_locations_of_all_us_nuc.html?wprss=securityfix)follows closely on the heals of previous P2P discoveries of Marine One blueprints and healthcare records.

Should we really be surprised? No not really, given the findings form the latest [Application Usage and Risk Report:](https://www.paloaltonetworks.com/literature/AUR_report0409.html?ts=markdown)

\* An average of six P2P variants were found in 9 out of 10 organizations.  
\* In one extreme case, 17 P2P variants were found.  
\* The most common P2P applications found were BitTorrent and Gnutella -- both at 68%  
\* Bandwidth consumed was a whopping 2.3 terabytes, or 5% of the total bandwidth viewed across the participating enterprises.
![he most commonly detected P2P-based file sharing applications found across the 63 participating organizations.](https://blog.paloaltonetworks.com/wp-content/uploads/2009/07/rampant_p2p_use1.jpg "rampant_p2p_use1")
The most commonly detected P2P-based file sharing applications found across the 63 participating organizations.

The logical question is: why can't enterprises stop P2P usage? There are several reason why.

The first reason is that employees are using what ever application they want. And in the case of P2P, the enterprise networks are typically far faster than home networks so why not take advantage of the connection speeds.

Dovetailing nicely into the high speed network access is the ability to get music, movies, software, and many things for free. Copy right laws are easily ignored when the latest movie, only seen in theatres, can be downloaded for free.

Possibly the most significant reason that IT cannot stop P2P is the plain fact that P2P applications use a variety of techniques to pass through the existing security infrastructures. Common techniques include port hopping and masquerading as HTTP. And as security administrators developed ad hoc techniques to detect these applications, P2P developers modified the application to use proprietary encryption as a means of bypassing the firewall, and signature based detection mechanisms. For example, uTorrent, the official BitTorrent client, uses proprietary encryption to evade detection.

Can Palo Alto Networks next-generation firewalls help?

We think we can. We can identify and control more than 40 P2P networks including BitTorrent, eMule, and LimeWire with more added as they are released to market. [See the entire list here](http://ww2.paloaltonetworks.com/applipedia/). Our customers are using our next generation firewall to reign in the use of these applications -- blocking use for others while enabling controlled use for some (like engineers who need Linux distributions). Want to learn more? Check out the [whitepaper on controlling P2P](https://www.paloaltonetworks.com/literature/whitepapers/Controlling_P2P_Apps.pdf?ts=markdown).

*** ** * ** ***

## Related Blogs

### [Firewall](https://www.paloaltonetworks.com/blog/category/firewall/?ts=markdown), [Government](https://www.paloaltonetworks.com/blog/category/government/?ts=markdown), [Next-Generation Firewalls](https://www.paloaltonetworks.com/blog/network-security/category/next-generation-firewalls/?ts=markdown), [Products and Services](https://www.paloaltonetworks.com/blog/category/products-and-services/?ts=markdown)

[#### PAN-OS 8.1: SSL Decryption Broker for Federal Government](https://www.paloaltonetworks.com/blog/2018/03/gov-pan-os-8-1-ssl-decryption-broker-federal-government/)

### [Cloud NGFW](https://www.paloaltonetworks.com/blog/network-security/category/cloud-ngfw/?ts=markdown), [Cloud Security](https://www.paloaltonetworks.com/blog/category/cloud-security/?ts=markdown), [Firewall](https://www.paloaltonetworks.com/blog/category/firewall/?ts=markdown)

[#### Modernizing Security on AWS: From Firewall Ops to Security Intent](https://www.paloaltonetworks.com/blog/network-security/modernizing-security-on-aws-from-firewall-ops-to-security-intent/)

### [Firewall](https://www.paloaltonetworks.com/blog/category/firewall/?ts=markdown), [Strata Network Security Platform](https://www.paloaltonetworks.com/blog/network-security/category/strata-network-security-platform/?ts=markdown), [Zero Trust Security](https://www.paloaltonetworks.com/blog/network-security/category/zero-trust-security/?ts=markdown)

[#### Powering the AI Enterprise with New Software Firewall Capabilities](https://www.paloaltonetworks.com/blog/network-security/powering-the-ai-enterprise-with-new-software-firewall-capabilities/)

### [AI Application Security](https://www.paloaltonetworks.com/blog/network-security/category/ai-application-security/?ts=markdown), [AI Governance](https://www.paloaltonetworks.com/blog/category/ai-governance/?ts=markdown), [Announcement](https://www.paloaltonetworks.com/blog/category/announcement/?ts=markdown), [Firewall](https://www.paloaltonetworks.com/blog/category/firewall/?ts=markdown), [Next-Generation Firewalls](https://www.paloaltonetworks.com/blog/network-security/category/next-generation-firewalls/?ts=markdown), [Partners](https://www.paloaltonetworks.com/blog/category/partners/?ts=markdown), [Products and Services](https://www.paloaltonetworks.com/blog/category/products-and-services/?ts=markdown)

[#### Palo Alto Networks Announces Support for NVIDIA Enterprise AI Factory](https://www.paloaltonetworks.com/blog/2026/01/support-nvidia-enterprise-ai-factory/)

### [5G Security](https://www.paloaltonetworks.com/blog/network-security/category/5g-security/?ts=markdown), [Firewall](https://www.paloaltonetworks.com/blog/category/firewall/?ts=markdown), [IoT Security](https://www.paloaltonetworks.com/blog/network-security/category/iot-security/?ts=markdown)

[#### Protecting the Utility Grid's Digital Ecosystem, from Core to Edge to AI](https://www.paloaltonetworks.com/blog/network-security/protecting-the-utility-grid-digital-ecosystem-from-core-to-edge-to-ai/)

### [AI Security](https://www.paloaltonetworks.com/blog/category/ai-security/?ts=markdown), [Announcement](https://www.paloaltonetworks.com/blog/category/announcement/?ts=markdown), [Endpoint](https://www.paloaltonetworks.com/blog/category/endpoint-2/?ts=markdown), [Event](https://www.paloaltonetworks.com/blog/category/event/?ts=markdown), [Firewall](https://www.paloaltonetworks.com/blog/category/firewall/?ts=markdown), [Non categorizzato](https://www.paloaltonetworks.com/blog/category/non-categorizzato/?ts=markdown)

[#### See How We're Fortifying Cloud and AI at AWS re:Inforce 2025](https://www.paloaltonetworks.com/blog/2025/06/fortifying-cloud-ai-aws-reinforce/)

### Subscribe to the Blog!

Sign up to receive must-read articles, Playbooks of the Week, new feature announcements, and more.
![spinner](https://www.paloaltonetworks.com/blog/wp-content/themes/panwblog2023/dist/images/ajax-loader.gif) Sign up  
Please enter a valid email.  
By submitting this form, you agree to our [Terms of Use](https://www.paloaltonetworks.com/legal-notices/terms-of-use?ts=markdown) and acknowledge our [Privacy Statement](https://www.paloaltonetworks.com/legal-notices/privacy?ts=markdown). Please look for a confirmation email from us. If you don't receive it in the next 10 minutes, please check your spam folder.  
This site is protected by reCAPTCHA and the Google [Privacy Policy](https://policies.google.com/privacy) and [Terms of Service](https://policies.google.com/terms) apply.  
{#footer} {#footer}

## Products and Services

* [AI-Powered Network Security Platform](https://www.paloaltonetworks.com/network-security?ts=markdown)

* [Secure AI by Design](https://www.paloaltonetworks.com/precision-ai-security/secure-ai-by-design?ts=markdown)

* [Prisma AIRS](https://www.paloaltonetworks.com/prisma/prisma-ai-runtime-security?ts=markdown)

* [AI Access Security](https://www.paloaltonetworks.com/sase/ai-access-security?ts=markdown)

* [Cloud Delivered Security Services](https://www.paloaltonetworks.com/network-security/security-subscriptions?ts=markdown)

* [Advanced Threat Prevention](https://www.paloaltonetworks.com/network-security/advanced-threat-prevention?ts=markdown)

* [Advanced URL Filtering](https://www.paloaltonetworks.com/network-security/advanced-url-filtering?ts=markdown)

* [Advanced WildFire](https://www.paloaltonetworks.com/network-security/advanced-wildfire?ts=markdown)

* [Advanced DNS Security](https://www.paloaltonetworks.com/network-security/advanced-dns-security?ts=markdown)

* [Enterprise Data Loss Prevention](https://www.paloaltonetworks.com/sase/enterprise-data-loss-prevention?ts=markdown)

* [Enterprise IoT Security](https://www.paloaltonetworks.com/network-security/enterprise-device-security?ts=markdown)

* [Medical IoT Security](https://www.paloaltonetworks.com/network-security/medical-device-security?ts=markdown)

* [Industrial OT Security](https://www.paloaltonetworks.com/network-security/medical-device-security?ts=markdown)

* [SaaS Security](https://www.paloaltonetworks.com/sase/saas-security?ts=markdown)

* [Next-Generation Firewalls](https://www.paloaltonetworks.com/network-security/next-generation-firewall?ts=markdown)

* [Hardware Firewalls](https://www.paloaltonetworks.com/network-security/hardware-firewall-innovations?ts=markdown)

* [Software Firewalls](https://www.paloaltonetworks.com/network-security/software-firewalls?ts=markdown)

* [Strata Cloud Manager](https://www.paloaltonetworks.com/network-security/strata-cloud-manager?ts=markdown)

* [SD-WAN for NGFW](https://www.paloaltonetworks.com/network-security/sd-wan-subscription?ts=markdown)

* [PAN-OS](https://www.paloaltonetworks.com/network-security/pan-os?ts=markdown)

* [Panorama](https://www.paloaltonetworks.com/network-security/panorama?ts=markdown)

* [Secure Access Service Edge](https://www.paloaltonetworks.com/sase?ts=markdown)

* [Prisma SASE](https://www.paloaltonetworks.com/sase?ts=markdown)

* [Application Acceleration](https://www.paloaltonetworks.com/sase/app-acceleration?ts=markdown)

* [Autonomous Digital Experience Management](https://www.paloaltonetworks.com/sase/adem?ts=markdown)

* [Enterprise DLP](https://www.paloaltonetworks.com/sase/enterprise-data-loss-prevention?ts=markdown)

* [Prisma Access](https://www.paloaltonetworks.com/sase/access?ts=markdown)

* [Prisma Browser](https://www.paloaltonetworks.com/sase/prisma-browser?ts=markdown)

* [Prisma SD-WAN](https://www.paloaltonetworks.com/sase/sd-wan?ts=markdown)

* [Remote Browser Isolation](https://www.paloaltonetworks.com/sase/remote-browser-isolation?ts=markdown)

* [SaaS Security](https://www.paloaltonetworks.com/sase/saas-security?ts=markdown)

* [AI-Driven Security Operations Platform](https://www.paloaltonetworks.com/cortex?ts=markdown)

* [Cloud Security](https://www.paloaltonetworks.com/cortex/cloud?ts=markdown)

* [Cortex Cloud](https://www.paloaltonetworks.com/cortex/cloud?ts=markdown)

* [Application Security](https://www.paloaltonetworks.com/cortex/cloud/application-security?ts=markdown)

* [Cloud Posture Security](https://www.paloaltonetworks.com/cortex/cloud/cloud-posture-security?ts=markdown)

* [Cloud Runtime Security](https://www.paloaltonetworks.com/cortex/cloud/runtime-security?ts=markdown)

* [Prisma Cloud](https://www.paloaltonetworks.com/prisma/cloud?ts=markdown)

* [AI-Driven SOC](https://www.paloaltonetworks.com/cortex?ts=markdown)

* [Cortex XSIAM](https://www.paloaltonetworks.com/cortex/cortex-xsiam?ts=markdown)

* [Cortex XDR](https://www.paloaltonetworks.com/cortex/cortex-xdr?ts=markdown)

* [Cortex XSOAR](https://www.paloaltonetworks.com/cortex/cortex-xsoar?ts=markdown)

* [Cortex Xpanse](https://www.paloaltonetworks.com/cortex/cortex-xpanse?ts=markdown)

* [Unit 42 Managed Detection \& Response](https://www.paloaltonetworks.com/cortex/managed-detection-and-response?ts=markdown)

* [Managed XSIAM](https://www.paloaltonetworks.com/cortex/managed-xsiam?ts=markdown)

* [Threat Intel and Incident Response Services](https://www.paloaltonetworks.com/unit42?ts=markdown)

* [Proactive Assessments](https://www.paloaltonetworks.com/unit42/assess?ts=markdown)

* [Incident Response](https://www.paloaltonetworks.com/unit42/respond?ts=markdown)

* [Transform Your Security Strategy](https://www.paloaltonetworks.com/unit42/transform?ts=markdown)

* [Discover Threat Intelligence](https://www.paloaltonetworks.com/unit42/threat-intelligence-partners?ts=markdown)

## Company

* [About Us](https://www.paloaltonetworks.com/about-us?ts=markdown)
* [Careers](https://jobs.paloaltonetworks.com/en/)
* [Contact Us](https://www.paloaltonetworks.com/company/contact-sales?ts=markdown)
* [Corporate Responsibility](https://www.paloaltonetworks.com/about-us/corporate-responsibility?ts=markdown)
* [Customers](https://www.paloaltonetworks.com/customers?ts=markdown)
* [Investor Relations](https://investors.paloaltonetworks.com/)
* [Location](https://www.paloaltonetworks.com/about-us/locations?ts=markdown)
* [Newsroom](https://www.paloaltonetworks.com/company/newsroom?ts=markdown)

## Popular Links

* [Blog](https://www.paloaltonetworks.com/blog/?ts=markdown)
* [Communities](https://www.paloaltonetworks.com/communities?ts=markdown)
* [Content Library](https://www.paloaltonetworks.com/resources?ts=markdown)
* [Cyberpedia](https://www.paloaltonetworks.com/cyberpedia?ts=markdown)
* [Event Center](https://events.paloaltonetworks.com/)
* [Manage Email Preferences](https://start.paloaltonetworks.com/preference-center)
* [Products A-Z](https://www.paloaltonetworks.com/products/products-a-z?ts=markdown)
* [Product Certifications](https://www.paloaltonetworks.com/legal-notices/trust-center/compliance?ts=markdown)
* [Report a Vulnerability](https://www.paloaltonetworks.com/security-disclosure?ts=markdown)
* [Sitemap](https://www.paloaltonetworks.com/sitemap?ts=markdown)
* [Tech Docs](https://docs.paloaltonetworks.com/)
* [Unit 42](https://unit42.paloaltonetworks.com/)
* [Do Not Sell or Share My Personal Information](https://panwedd.exterro.net/portal/dsar.htm?target=panwedd)
  ![PAN logo](https://www.paloaltonetworks.com/etc/clientlibs/clean/imgs/pan-logo-dark.svg)
* [Privacy](https://www.paloaltonetworks.com/legal-notices/privacy?ts=markdown)
* [Trust Center](https://www.paloaltonetworks.com/legal-notices/trust-center?ts=markdown)
* [Terms of Use](https://www.paloaltonetworks.com/legal-notices/terms-of-use?ts=markdown)
* [Documents](https://www.paloaltonetworks.com/legal?ts=markdown)

Copyright © 2026 Palo Alto Networks. All Rights Reserved

* [![Youtube](https://www.paloaltonetworks.com/etc/clientlibs/clean/imgs/social/youtube-black.svg)](https://www.youtube.com/user/paloaltonetworks)
* [![Podcast](https://www.paloaltonetworks.com/content/dam/pan/en_US/images/icons/podcast.svg)](https://www.paloaltonetworks.com/podcasts/threat-vector?ts=markdown)
* [![Facebook](https://www.paloaltonetworks.com/etc/clientlibs/clean/imgs/social/facebook-black.svg)](https://www.facebook.com/PaloAltoNetworks/)
* [![LinkedIn](https://www.paloaltonetworks.com/etc/clientlibs/clean/imgs/social/linkedin-black.svg)](https://www.linkedin.com/company/palo-alto-networks)
* [![Twitter](https://www.paloaltonetworks.com/etc/clientlibs/clean/imgs/social/twitter-x-black.svg)](https://twitter.com/PaloAltoNtwks)
* EN  
  Select your language