Manage &Troubleshooting with Zscaler -2023

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As we continue to rely more and more on cloud-based applications and services, it’s becoming increasingly important to have a robust and effective security solution in place. Zscaler is one such solution that provides secure access to the internet and applications from any device, location, or network. However, as with any complex system, managing and troubleshooting Zscaler can sometimes be challenging.

Fortunately, there are many resources available to help you get the most out of Zscaler and troubleshoot any issues that may arise. From online documentation and community forums to live support and training programs, there are many ways to learn about the best practices for managing and troubleshooting Zscaler.

In this article, we’ll explore some of the key strategies and tools for managing and troubleshooting Zscaler in 2023. We’ll cover everything from setting up policies and configuring security settings to diagnosing and resolving performance issues. Whether you’re a seasoned Zscaler user or just getting started, this guide will provide you with the information and resources you need to effectively manage and troubleshoot this powerful security solution.

How to troubleshoot slowness issue with Zscaler?

There are a few steps you can take to troubleshoot slowness issues with Zscaler:

Check your internet connection speed: A slow internet connection can cause Zscaler to run slowly. You can check your internet connection speed by using a tool like

Check for network congestion: If there is a lot of traffic on your network, it can cause Zscaler to run slowly. You can check for network congestion by monitoring your network bandwidth usage.

Restart your devices: Sometimes, simply restarting your devices can resolve slowness issues. Try restarting your computer, router, and any other devices that are connected to the internet.

Check for updates: Make sure that you have the latest version of Zscaler installed. Outdated versions of Zscaler can cause slowness issues.

Contact Zscaler support: If you’ve tried the above steps and are still experiencing slowness issues, you can contact Zscaler support for further assistance.

Common Causes of Zscaler Performance Issues and How to Resolve Them

Zscaler is a cloud-based security platform that provides secure access to the internet and applications from any device, location, or network. While Zscaler is known for its high-performance capabilities, users may occasionally experience performance issues that can impact their productivity and overall experience. Here are some common causes of Zscaler performance issues and how to address them:

Internet connectivity: Zscaler’s performance is heavily dependent on the quality of your internet connection. If you’re experiencing slow or intermittent internet connectivity, it can negatively impact the performance of Zscaler. To resolve this issue, you can try resetting your modem or router, or contacting your internet service provider (ISP) for assistance.

Bandwidth limitations: Zscaler uses a significant amount of bandwidth, which can cause performance issues if you have limited bandwidth available. If you’re experiencing slow performance, you may need to increase your bandwidth or consider optimizing your network to prioritize Zscaler traffic.

Software conflicts: If you have other security software installed on your device, it can conflict with Zscaler and cause performance issues. To resolve this issue, try disabling or uninstalling any conflicting software.

Outdated software: Outdated software can cause compatibility issues with Zscaler and impact its performance. Ensure that you’re using the latest version of Zscaler and all other software installed on your device.

Large file transfers: Zscaler may experience performance issues when transferring large files. To avoid this, consider breaking large files into smaller chunks before transferring them.

Server congestion: Zscaler’s servers can become congested during peak usage times, causing performance issues. If you’re experiencing slow performance, try using Zscaler during off-peak hours or contact Zscaler support for assistance.

Zscaler troubleshooting tools

Here are some pointers to help you understand how to use tools to troubleshoot performance issues in Zscaler:

Zscaler Cloud Performance Test Tool: This device gathers efficiency troubleshooting info when attaching to the net via Zscaler. It runs numerous examinations to gauge download or upload data transfer between your internet browser and the Zscaler service. 

Wireshark: This device assists you in fixing network efficiency concerns. Use an I/O graph to compare the performance of website traffic that experiences Zscaler and website traffic that goes straight to the net. 

It likewise helps you identify if you’re hitting a data transfer cap or if the throughput plateaus. Results to Anticipate: Bear in mind that Zscaler checks web content on an individual customer session basis. So, there should be no assumption that one user can fill up the entire network pipe the business has readily available. 

If your link and website traffic shaping permit, you should see sufficient bandwidth to perform day-to-day organization deals and assistance requiring enterprise applications such as voice and video clip conferencing.

what is use of web insight in Zsclaer?

what is use of web insight in Zsclaer?
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Web Insights is a feature of Zscaler that allows you to monitor and analyze web traffic in real-time. It provides visibility into the websites that your users are visiting and the performance of those websites. You can use Web Insights to identify patterns of behavior, such as users visiting the same websites repeatedly or experiencing slow load times on certain sites. You can also use it to troubleshoot issues with web access and to ensure that your users are compliant with your organization’s internet usage policies.

Can we check ssl inspection via web insight?

Can we check ssl inspection via web insight?
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Yes, you can use Zscaler Web Insights to monitor SSL inspection.Web Insights provides information about the SSL traffic that is passing through the Zscaler platform, including the number of SSL connections, the certificates being used, and any errors or issues that may be occurring. This can be helpful in troubleshooting SSL-related issues and ensuring that your organization’s SSL inspection is working properly.

To view SSL-related information in Web Insights, you can go to the “Traffic” tab and look for the “SSL” section. Here, you will see a variety of metrics and charts that provide insights into your organization’s SSL traffic, including the number of SSL connections, the types of certificates being used, and any SSL-related errors or issues. You can also use the filters and search tools in Web Insights to drill down and get more detailed information about specific SSL connections or issues.

Are url whitelisting and url bypass the same thing?

URL bypass and URL whitelisting are similar in that they both allow users to access specific websites that would otherwise be blocked by internet usage policies. However, there are some key differences between the two.

URL bypass allows users to access specific websites that are normally blocked by the organization’s internet usage policies. This can be useful in situations where a website is blocked due to a false positive or where users need temporary access to a specific site for legitimate business purposes.

URL whitelisting, on the other hand, allows users to access only the websites that are specifically listed on the whitelist. All other websites will be blocked, regardless of whether they are normally allowed or blocked by the organization’s internet usage policies. URL whitelisting is often used as a more restrictive form of internet access control.

In summary, URL bypass allows users to access specific websites that are normally blocked, while URL whitelisting only allows users to access the websites that are specifically listed on the whitelist.


Q1. What should I do if I experience slow performance when using Zscaler?

A: First, run the Zscaler Cloud Performance Test Tool to identify any issues. If the test results suggest that the problem is not related to Zscaler, try using Wireshark to identify any network performance issues. Also, check if there are any bandwidth limitations set in your organization’s policy.

Q2. How do I use Wireshark to troubleshoot Zscaler performance issues?

A: Use Wireshark’s I/O graph feature to compare the performance of traffic that goes through Zscaler and traffic that goes directly to the internet. You can identify if you’re hitting a bandwidth cap or if the throughput plateaus. Wireshark also helps you identify network performance issues, such as dropped packets or high latency.

Q3. How can I improve Zscaler performance?

A: To improve Zscaler performance, make sure that your Zscaler policies are optimized and that you are using the latest version of the Zscaler client. Also, consider adjusting your organization’s bandwidth allocation policies if necessary. It may also be helpful to run regular network performance tests and monitor your network traffic for any issues.

Q4. What is SSL inspection, and why is it important?

A: SSL inspection is a process in which the Zscaler service intercepts and decrypts SSL-encrypted traffic to scan it for threats. This is important because many threats are now delivered via SSL-encrypted traffic, and without SSL inspection, these threats may go undetected.

Q5. How does SSL inspection work in Zscaler?

A: When SSL inspection is enabled, the Zscaler service establishes a separate SSL tunnel with the user’s browser and the destination server. The Zscaler service sends its own HTTPS request to the destination server and conducts SSL negotiations. The destination server sends the Zscaler service its certificate with its public key. The Zscaler service conducts SSL negotiations with the user’s browser, sending the browser the Zscaler intermediate certificate or your organization’s custom intermediate root, as well as a server certificate signed by the Zscaler intermediate CA. The browser validates the certificate chain in the browser’s certificate store.

Q6. Is SSL inspection optional in Zscaler?

A: Yes, SSL inspection is an optional feature in Zscaler. You can choose to enable or disable it based on your organization’s security requirements. However, keep in mind that disabling SSL inspection may leave your organization vulnerable to threats delivered via SSL-encrypted traffic. If you choose to disable SSL inspection, it’s important to implement other security measures to protect against these threats.

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