Emilie Meyer
The Internet Content Adaptation Protocol (ICAP) is a lightweight HTTP-like protocol used to extend transparent proxy servers. ICAP is generally used to implement virus scanning and content filters in transparent HTTP proxy caches. PAN-OS 7.0 does not support ICAP as it is not a proxy. However, there are some discussions and workarounds on the LIVEcommunity forum regarding the integration of ICAP with PAN and Symantec DLP.
| Characteristics | Values |
|---|---|
| Does PAN support ICAP? | PAN does not support ICAP as it is not a proxy. |
| PAN OS version | 7.0, 11.0 |
| Alternative solutions | Symantec DLP, RSA DLP, Check Point |
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What You'll Learn
PAN-OS 11.0 and ICAP support
The Internet Content Adaptation Protocol (ICAP) is a lightweight HTTP-like protocol used to extend transparent proxy servers. ICAP is a popular way to scan files on external sandbox systems, but it can slow down performance.
PAN-OS 11.0 users have asked about ICAP support, but there is no mention of it in the new proxy capabilities. A LIVEcommunity team member confirmed that PAN-OS does not support ICAP as it is not a proxy.
Palo Alto Networks offers Advanced Wildfire as an ICAP alternative for PAN-OS. Advanced Wildfire has similar features to ICAP, such as blocking the first bad packet, but without the performance and slowness issues of ICAP.
Advanced Wildfire is available for Palo Alto NGFW and Prisma Access SASE. It includes features such as real-time retrieval of WildFire signatures, WildFire Inline ML, and more.
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PAN and ICAP capabilities
The Internet Content Adaptation Protocol (ICAP) is a lightweight HTTP-like protocol specified in RFC 3507. ICAP is used to extend transparent proxy servers, freeing up resources and standardizing the way new features are implemented. ICAP is typically used to implement virus scanning and content filters in transparent HTTP proxy caches.
Palo Alto Networks (PAN) is a cybersecurity company that offers a range of network security products and services. PAN offers a variety of capabilities through its PAN-OS, which stands for Palo Alto Networks Operating System. This operating system serves as the brain of the company's physical and virtual firewalls, providing various features and functionalities to secure networks and protect organizations from cyber threats.
Regarding the compatibility of PAN and ICAP, there have been queries from users about whether PAN-OS supports ICAP. Specifically, with the release of PAN-OS 11.0, some users were looking for information on ICAP support in the new version. However, in responses from the LIVEcommunity team, it was indicated that PAN-OS 11.0 does not explicitly mention ICAP support. It was further clarified that since PAN is not a proxy and does not intend to become one, it is unlikely to support ICAP. This statement was made in 2015, in reference to PAN-OS 7.0, and it seems the same applies to PAN-OS 11.0.
Despite the lack of direct ICAP support, there are workarounds and alternative methods suggested by some users. For instance, one user mentions the use of the PANOS L3 security broker service, which can work with a proxy supporting ICAP and the Symantec Network Prevent server. This design is said to be compatible with PANOS. Additionally, another user mentions the possibility of achieving similar functionality without ICAP by using XML-API calls, although it may not provide the same level of prevention as ICAP.
While PAN-OS may not directly support ICAP, the discussions within the Palo Alto Networks community highlight the ongoing exploration of potential solutions and workarounds to integrate ICAP capabilities or achieve similar functionality.
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PAN and Symantec DLP integration
The Internet Content Adaptation Protocol (ICAP) is a lightweight HTTP-like protocol used to extend transparent proxy servers. ICAP is generally used to implement virus scanning and content filters in transparent HTTP proxy caches.
PAN-OS 7.0 does not support ICAP as it is not a proxy. However, PAN has been integrated with Symantec Data Loss Prevention (DLP) in some deployments. Symantec DLP enables users to discover, monitor, and protect sensitive corporate information. The integration with PAN involves using PCAP (SPAN or Mirror Ports) for network detection and marking up messages with ICAP and X-Forward for Web and Email.
Symantec DLP offers a flexible response mechanism where an XML API call can be made to take quick action on a user. However, this mechanism may not be fast enough to block a user instantly. Symantec Email Prevent does not require integration, while Web Prevent requires ICAP integration, which may need to be supplemented with a better flexible response.
The Symantec DLP integration with PAN has been tested with Symantec DLP version 15.5 and 15.7 RESTful API. This integration is part of the Symantec Data Loss Prevention Pack and has been deprecated in favour of the Symantec DLP v2 integration. The new integration fetches incidents in the order they were created, but incident IDs may not be fetched sequentially due to creation time differences.
Some issues with the Symantec DLP API include 401 errors for certain incidents and potential connection problems when both "Kerberos" and "form" type authentication methods are enabled.
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PAN and ICAP: a viable solution?
The Internet Content Adaptation Protocol (ICAP) is a lightweight HTTP-like protocol used to extend transparent proxy servers, freeing up resources and standardising the implementation of new features. ICAP is commonly used for virus scanning and content filtering in transparent HTTP proxy caches.
PAN, or Palo Alto Networks, is a cybersecurity company that offers a range of network security products and services. PAN provides a platform called PAN-OS, which is a next-generation firewall operating system.
The question of whether PAN supports ICAP has been a topic of discussion among users and within the LIVEcommunity. Some users have inquired about ICAP support with specific versions of PAN-OS, such as 7.0 and 11.0. The general consensus, as stated by LIVEcommunity team members, is that since PAN is not a proxy and does not intend to be one, it will not support ICAP. This stance is based on the understanding that ICAP is primarily designed for use with proxy servers.
However, there have been discussions and explorations of potential workarounds or alternative solutions. Some users have suggested that certain configurations, such as using Symantec DLP with PAN, can provide similar functionality. For example, Symantec DLP can utilise PCAP (SPAN or Mirror Ports) for network detection and markup ICAP and X-Forward messages for web and email. Additionally, there have been suggestions to explore DLP solutions beyond ICAP, such as working with top DLP vendors to find a comprehensive DLP strategy that better meets customer needs.
While PAN may not directly support ICAP, the discussions and explorations within the community highlight a recognition of the importance of effective DLP solutions. The conversations also showcase the creativity and resourcefulness of the user community in seeking alternative approaches to achieve their desired outcomes.
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PAN and ICAP: a one-way implementation
The Internet Content Adaptation Protocol (ICAP) is a lightweight HTTP-like protocol used to extend transparent proxy servers, thereby freeing up resources and standardizing the way in which new features are implemented. PAN, or Palo Alto Networks, is a cybersecurity company that provides a wide range of security services and products, including firewalls and cloud security.
PAN does not inherently support ICAP as it is not a proxy and does not intend to be one. This is a significant limitation for some customers, particularly those seeking a comprehensive Data Loss Prevention (DLP) strategy. PAN's built-in DLP capabilities are limited, and the alternative solution of "just blocking Dropbox and Gmail Send" is not a viable option for most customers.
However, some workarounds and alternative solutions have been suggested by members of the LIVEcommunity. One suggestion is to use a re-generator TAP, which allows tools like DLP to have multiple copies of the traffic to do their job. Another suggestion is to use a design that works with PANOS, F5 > v14, and Symantec DLP NWP 15.5. Symantec DLP 11.6 has been deployed with PAN in a few places, and for the integration, Symantec uses PCAP (SPAN or Mirror Ports) to do network detection and markup messages with ICAP and X-Forward for Web and Email.
While these workarounds exist, they may not be ideal for all customers. Some community members have expressed concern that PAN's strategy is not realistic for most customers and that PAN may be losing engagements as a result. PAN has acknowledged this feedback and has reached out to vendors such as Symantec to explore potential solutions.
Despite these discussions and explorations, as of November 2022 with the release of PAN-OS 11.0, there was still no mention of ICAP support. This suggests that PAN and ICAP remain a one-way implementation, with PAN not supporting ICAP but ICAP being used in some configurations with PAN products.
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Frequently asked questions
No, PAN does not support ICAP. PAN does all protocols all the time and is not a proxy.
PAN is not a proxy and does not intend to be one.
A re-generator TAP can be used instead.
