HTTP 1.1 Gateway timeout error while accessing internal websites from Secure Web

HTTP 1.1 Gateway timeout error while accessing internal websites from Secure Web

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Article ID: CTX208223

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Description

HTTP 1.1 Gateway timeout error while accessing internal websites from Secure Web when traffic is tunneled through the NetScaler. This issue occurs when the  MDX Policy is set for Secure Browse. If the preferred VPN mode on the app is set to FULL VPN TUNNEL, then the issue will not occur.. 

Resolution

Solution 1:
Currently NetScaler 11.0 and below do not support Server Name Indication (SNI) to the backend.
This support will be available in 11.1 build of the NetScaler code

Solution 2:
Currently the NetScaler appliance supports 2048-bit certificate and below on the backend server. If the server is leveraging a 4096-bit certificate, SSL and TLS traffic from the SNIP to backend may fail.
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Issue/Introduction

HTTP 1.1 Gateway timeout error while accessing internal websites from Secure Web.