Users experience "HTTP 501 not implemented" error when browsing via the Cisco Web Security Appliance using port 8080

Available Languages

Download Options

  • PDF     (6.3 KB)
    View with Adobe Reader on a variety of devices
Updated:July 31, 2014
Document ID:118133

Bias-Free Language

The documentation set for this product strives to use bias-free language. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on RFP documentation, or language that is used by a referenced third-party product. Learn more about how Cisco is using Inclusive Language.

Introduction

This document describes common mistake when end-user recieve error "HTTP 501 not implemented".

Background Information

By default, the Cisco WSA runs the web GUI on TCP port 8080.  The GUI web server running on port 8080 is attempting to respond to the client traffic instead of the proxy.

Solution

Typically, all traffic that comes in to the WSA GUI on port 8080 will be redirected to the HTTPS web GUI. This causes the client to send an HTTP CONNECT request to the GUI web server, which does not allow this type of connection.

The browser must be set to use one of the proxy ports configured on the WSA. To verify or change which ports are enabled for Web Proxy traffic, go to:

GUI  -> Security Services -> Proxy Settings -> HTTP Ports to Proxy

NOTE: By default the proxy is listens on ports 80 and 3128.
NOTE: The Management interface runs on 22 (SSH), 8080 (HTTP), and 8443 (HTTPS).

Revision History

Revision Publish Date Comments
1.0
31-Jul-2014
Initial Release
TAC Authored

Contributed by Cisco Engineers

  • Josh Wolfer, Stephan Fiebrandt
    Cisco TAC Engineers.

Was this Document Helpful?

FeedbackFeedback

Contact Cisco

This Document Applies to These Products