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Troubleshooting NetScaler by Raghu Varma Tirumalaraju

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NetScaler Gateway™ VPNs

To get a baseline idea of what a successful login and resource access should look like, over the next few pages we will examine the various stages of a NetScaler Gateway VPN session using a Wireshark capture. The intent is to provide you with the knowledge of a known good trace that you can compare against when troubleshooting issues.

We will then follow up with a discussion of the troubleshooting tools and techniques for troubleshooting NetScaler Gateway VPNs.

Examining VPN session launch using Wireshark

VPN session establishment is a multi-step process where the client and NetScaler exchange a number of control messages. To make this exchange easier to digest, let's break this into different phases:

  • Phase 1: The EPA exchange ...

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