Zscaler block page com Configuring Application Segments | Zscaler How to configure application segments and define applications within the Zscaler Private Access (ZPA) Admin Portal. This enables you to allow or block specific types of traffic. DNS_PROBE_FINISHED_NXDOMAIN. Block Undecryptable Traffic in Policies > Common Configuration > SSL/TLS Inspection > SSL/TLS Inspection Policy is enabled and the Zscaler service was unable to make a server-side connection (TCP or SSL). In this module, you will learn to solve issues related to URL classification, understand the use of localizing and isolating ZIA issues, and familiarize yourself with troubleshooting tools. Aug 11, 2022 · Block notification can seen only if the transactions is blocked, Block/ allow depends on the access policies, threat protection or data leak prevention policies. A notification is still received in the Notifications window of Zscaler Client Connector. g: Zscaler should allow/deny access based on the user-agent that’s talking to Zscaler. For more on Zscaler Machine Learning and AI technology blocking unknown threats in practice, watch my presentation from the recent Virtual Zscaler CXO Summit. About ZScaler redirected landing page for websites that are blocked for security reasons or suspicious. Too many users have been clicking through the caution page, however, and we would like to 📌 Purpose This article guides using ZIA Analytics for effective troubleshooting of common Zscaler Internet Access (ZIA) issues. zenithLoading Sorry to interrupt CSS Error Refresh Zscaler Client Connector Errors Zscaler Client Connector: Windows Registry Keys Zscaler Client Connector: Connection Status Errors Zscaler Client Connector: ZPA Authentication Errors DNS Resolution Fails through the ZIA Public Service Edge Captive Portal Sign-In Fails for Chromebook Users Zscaler Client Connector Displays Blank Page AppArmor Causes Auto-Upgrade to Zscaler Client Connector Zscaler Internet Access (ZIA) product and feature ranges and limitations. Use Zscaler's recommended File Type Control policy, or create your own custom policy. In the ZIA Admin Portal, you can configure different types of browser-based EUNs: Block Notification Zscaler inspects all content, all the time Zscaler advanced threat protection begins by quickly validating that browser and plug-ins are compliant and then moves to full content inspection. During testing and pilot we have discovered that we only get the block message for not secure pages. The Advanced Threat Protection policy is a global policy, so it applies to all users. Isolate: websites belonging to isolated categories will open in a remote browser in a Zscaler data center, preventing any active content from the web page from reaching the user's device. Second Scenario then I made this changes “. zenithLoading Sorry to interrupt CSS Error Refresh May 13, 2025 · From Traffic Cop to Traffic Architect: HTTP Header Control in ZIA ZIA sits strategically between your network and the internet - like a hyper-intelligent customs officer, inspecting every outbound request before it leaves the premises. com. Does customer requirement able to configured with Zscaler Client Connector or we have to use other method e. g. Simple PowerShell script, that is bypassing/killing ZScaler. To configure the advanced settings: Aug 20, 2020 · Zscaler security team became aware of an issue through a blog published by an external researcher which allows an attacker to craft a malicious HTML page that when visited by the target user via a web proxy will allow the attacker to exfiltrate the block page information. Instead you can block QUIC with std FW which forces the connection over 80/443. Information on URL categories in the Zscaler service, including details about custom categories and examples of URL categorization. This training covers systematic troubleshooting techniques and best practices. With URL Filtering policies you can limit your exposure to liability by managing access to web content based on a site's categorization. Status codes are prefixed by the related ZPA component: AC: The App Connector component. If so, the organization can be blocking the website you are attempting to access, or otherwise restricting the extent of access permitted. If the Advanced Threat Protection policy is configured to block malicious activity, and a user's traffic matches a blocked activity, Zscaler Client Connector displays a notification that the activity was blocked as potentially harmful. Jan 31, 2023 · Gordon Wright (Customer) 3 years ago Yes you can customize most of the end user notification pages. The following option appears: Redirect URL: Enter the redirected URL that hosts the notification. We would like to show you a description here but the site won’t allow us. Note that URL lookup results may vary from those seen in your environment due to possible custom categories that your admin might have configured. The end user notifications (EUNs) are made up of a number of discrete table rows and columns. With the URL Lookup tool you can find out how Zscaler categorizes a site (URL or IP Address) in its URL Filtering Database. We have a button that fires some automation in the background to automate the create of support tickets. Most of the time it is a government website which is only reachable from a Country IP, but not always. To learn more about the capabilities supported in each subscription, see Understanding Firewall Capabilities. The payload is inspected and matched against signatures, patterns or behaviors to detect and block threats. When the above Zscaler is a leading cloud enterprise security provider helping global businesses adopt zero trust for secure digital transformation. This will also identify some forms of abuse of DNS that are consistent with some DNS tunneling methods in real time 2 Mar 29, 2021 · Zscaler customers lose business, when websites cannot be accessed! Also customers of security products that block access via Zscaler will lose business, since Zscaler-customers cannot access their websites! This article provides an explanation of the policy actions that are seen in Insights and NSS reports. This is much more reliable than merely looking at the extension or MIME type which can be easily changed. ZIA URL Filtering Advanced Policy Settings Leading Practices Checklist Use this checklist to mark the progress of your ZIA URL Filtering Advanced Policy Settings deployment. 2. This is why On the Advanced Settings page in the ZIA Admin Portal, you can configure settings for a variety of Zscaler service features. This repository contains a custom block notification page template for Persistent Systems to be used with Zscaler. The Zscaler Internet Access (ZIA) Secure Sockets Layer (SSL) Inspection Leading Practices Guide provides a set of best practices for configuring and deploying ZIA SSL inspection in an organization's network environment. IPS block outbound request: page contains known browser exploits In the firewall control I have the predefined policy "Block malicious IPs and domains" which refers to a Criteria URL Categories "Malicious Content". The Zscaler service logs transactions in real time and shows the Dear Zscaler, Can we whitelist specific web page? for example:- We want to block facebook for all but want to allow specific FB page for specific user. SSL, and its successor Transport Layer Information on the Cloud App Control policy. Sep 1, 2022 · URL getting block Hi team, I am new on the Zscaler portal please help with the below error send by client machine. Oct 25, 2021 · Hi, We are moving to Windows defender firewall (from Symantec) and are encountering some issues. JavaScript has been disabled on your browserenable JS The Zscaler service categorizes and stores prompts for Gen AI applications. Feb 15, 2021 · Hello, I had this same issue until Zscaler introduced, ‘Blocked URLs’ in SSL Inspection to block HTTPS URLs if SSL Inspection is disabled. Check if there is a typo in URL. Killing the ZScaler - killing ZScaler process in a loop as long as the Creating and using custom URL categories in Zscaler ZIA (Zscaler Internet Access) and mapping them to policies involves a few key steps. These notification appear on the browser when a URL filtering or cloud app control policy block or caution rule is trigerred. msrc. Jul 27, 2020 · All, Can we do a user-agent based policies in ZIA? For e. If you choose Block and a user attempts to download a malicious sandbox-classified file, the service displays a block notification and prevents the download. On the Edit Notification page, modify fields as necessary, and then continue the steps to edit a notification. Information about the Zscaler service's URL filtering policy. We’ve identified some subdomains that are common in AiTM attacks and want to block URLs based of those keyword (s) strings. We have a bunch of URLs blocked in ZIA - Policy - Advanced Threat Policy - Blocked Malicious URLs. 0 using destination exclusions. We block all outgoing and inbound connections, I have added all the rules in the below link to allow the applications and process’ through the firewall: Zscaler Client Connector Processes to Whitelist | Zscaler However Teams, Outlook, Edge, Chrome etc are still getting blocked. Information on the Zscaler's browser end user notification template. " How can we get a Oct 14, 2021 · Hi, newbie here apologies if this is obvious in the docs somewhere. Zscaler recommends that you include helpful information so users understand why they are being denied access. When a user accesses any of these sites, they don't get our normal end user notification "site has been blocked due to policy violation", they just get a generic, unhelpful message: "This site can't be reached. Zscaler’s ZTE provides DNS resolution and the Zscaler firewall provides the ability to block DNS requests and tunnels to unapproved sources, redirecting DNS requests to authorized resolvers when possible Information on URL categories use cases applicable to Zscaler Internet Access (ZIA) cloud service API. ZPA session status codes appear in the User Activity Diagnostics page. Parameters Simple PowerShell script, that is bypassing/killing ZScaler. It focuses on leveraging ZIA’s built-in diagnostics, such as Web Insights, SSL Inspection Logs, Firewall Logs, and HTTP header traces. In the table, locate the notification you want to modify and click the Edit icon (). The URLs to block do not necessarily have to be fetched from Zscaler. The Zscaler service categorizes and stores prompts for Gen AI applications. Still user was getting Block page. Configure your policy with a custom category containing the website or categories in question, and set the action to Block with a Redirect URL set to the page you uploaded. Jul 6, 2023 · With URL Filtering policy in place (or URL Categories in SSL Inspection Rule Criteria used), if you hit a website with an untrusted SSL cert (revoked, expired etc), Zscaler Untrusted Certificate Check kicks in prior to URL Filtering Policy. If you are using this information for any goal than The website encountered an unexpected error. PAC file to block all internet access?. Oct 8, 2020 · Currently we are testing Zscaler ZIA, Appreciate if anyone can assist or guide on how to implement policy as subject to block all and allowed only certain user and group to access particular website?. Global ZIA Service Edge IP Addresses (16) Zscaler has configured several Global, or Ghost, ZIA Public Service Edges (formerly Zscaler Enforcement Nodes or ZENs) across its clouds. Access is denied due to bad certificate also We found a security threat. When the user's browser is redirected, the URL includes query parameters, which administrators can use to customize the page that is served or for logging purposes. Objective The objective of this guide is to provide several reference architectures that illustrate how both Zscaler Internet Access (ZIA) and Zscaler Private Access (ZPA) technologies can be leveraged for LAN (Local Area Network) segmentation to enforce zero trust access for users. Information on how to customize the browser EUN template for the Cloud App Control and URL Filtering policy rules. They can be fetched from other sources, for example, custom enrichment. You can create up to 64 custom categories and you can also choose whether the URLs, keywords, and IP ranges you add remain mapped to their Watch a video about End User Notifications. Information on the Browser Control policy and how to enable warnings for browsers, plugins, and applications as well as block browsers and their versions. Single source for caution custom notification. SE: The ZPA Public Service Edge or ZPA Private Service Edge component. To learn more, see Isolation Policy. microsoft. By right it should display the block notification page. JavaScript has been disabled on your browserenable JS The message is direct result of a policy block. Jun 22, 2022 · help. These fields must be configured to run the Enforcement Set. the deployment only applicable for Zscaler Client Connector IdP instead of OKTA as primary. 7 and earlier: Block outbound traffic in Zscaler Tunnel (Z-Tunnel) 2. External URL\domain add on is still required to fully load the website due to primary policy is “block all? including the concern of website with login edirect requirement. See image. All rights reserved. Jun 18, 2021 · And in the milliseconds it takes for those models to identify an unknown threat as an actual threat to be blocked, security improves for every single Zscaler customer. ZPA BA: The Action for Subsequent Downloads: Choose to Allow or Block downloads of sandbox-classified files (files the Sandbox previously analyzed) that match the criteria above. ms/pnc) in close collaboration and review with Microsoft product groups. Please find the attached snapshot. This tool runs several performance tests, such as download or upload bandwidth, between the browser and the ZIA Public Service Edge or ZIA Private Service Edge to which the traffic is forwarded. Aug 17, 2023 · If you have anything set up in the "HOSTNAME OR IP ADDRESS BYPASS FOR VPN GATEWAY" field in the app profile page, or applications like Teams or Zoom that you are bypassing from the Client Connector in the app profile you are using when installing, users will be able to navigate to any of those destinations/use those applications. After analyzing the domain fronting detection and the extent of FPs (false positives), enterprises should consider turning on the prevention setting. Zscaler Cloud Sandbox is architected to provide inline protection to block threats before they enter your network. Try again later. Browsing sites that fall under block URL Category with trusted certs will trigger URL Filtering block (Log: not allowed to browse this category). The Edit Notification page appears. The caution notification includes an option to allow users to continue accessing the site by acknowledging that visiting the site might violate your corporate internet usage policy. Enabling the following options allows Zscaler to categorize and store the prompts for the respective applications: The prompts for these applications are logged on the Web Insights Logs page. The website encountered an unexpected error. CA: The Central Authority component. Little known is that fancy domains like “. It identifies malware buried deep within an otherwise legitimate page, so it doesn’t slip through the cracks. Identify DeepSeek's URLs and Domains DeepSeek typically operates through specific URLs. As soon as you disable Zscaler Client, and working as Road Warrior, the website will load. We’re attempting to use a custom web page as the caution notification page. On Windows devices, you can block traffic based on the version of Zscaler Client Connector: Zscaler Client Connector versions 4. Where can I manage this URL category? You can configure URL filtering rules for specific URL categories to caution users about accessing sites that might conflict with your corporate internet usage policy. Zscaler only uses one category on its processing, so if one specific site is included in two or more different custom categories, chances are some requests got denied The ZIA Policies Leading Practices Guide provides a set of best practices for configuring and deploying Zscaler Internet Access (ZIA) policies in an organization's environment. This provides control over popular websites and applications, and the ability to define a daily quota by bandwidth or time. I created both a rule in IPS Control and in Firewall policy, gave them the first place in the rule-order, and activated both. This field is only visible if Rule Action is set to Block Access. We manage to reduce workload using URL formatting as suggested. Block Profiles are a powerful tool for strengthening and customizing your organization's access policy strategy. Choose Custom to redirect to an external site. Policy Reason Feature Jan 26, 2023 · Website not reachable from Zscaler IP Hi, sometimes we have websites beeing used in our Company which are not reachable when using Zscaler. Jun 2, 2022 · If you are connected to a school or business or organization network, check with the IT staff managing the network. Assets returned by the selected query or assets selected on the relevant asset page. Note: Currently in the public API to retrieve GRE endpoints in ZIA it shows all available endpoints from Zscaler. Jan 31, 2025 · To address these risks, organizations leveraging Zscaler can create and enforce a URL policy to block access to DeepSeek. domain format. Watch a video about configuring custom URL categories Creating and configuring custom categories provides you with greater flexibility when creating URL filtering policies, allowing specific websites, keywords, and IP ranges to be controlled as desired. Steps to Block DeepSeek Using Zscaler URL Policy 1. Copyright ©2007 - 2025 Zscaler Inc. Jun 2, 2025 · Zscaler is a popular cloud security platform. Now I've had more of a chance to look at it I can't for the life of me find the information with the 'don't block this url' information in it though. Block Profiles allow Admins to configure block behavior and customize end-user notification pages across private applications and internet access on a rule-by-rule basis. This limits your exposure to liability by managing access to web content based on a site's categorization. 📘 Note The URLs to block do not necessarily have to be fetched from Zscaler. You can customize the redirected page that hosts custom caution notification, such that the service redirects the users to their requested site, using methods such as a Continue button, a CAPTCHA, etc. Information on predefined firewall filtering rules in the Zscaler service, including Office 365 One Click Rule, Zscaler Proxy Traffic, Block Malicious IPs and Domains, and Block All IPv6 rules. End User Notifications | Zscaler We have also added links to our Service Desk as well as things like self-heal scripts. The docs here Configuring the Caution Notification | Zscaler indicate our custom page can allow the user to move on to whatever URL triggered the warning but it doesn’t make clear what exactly any CONTINUE button or CAPTCHA or whatever we place on Zscaler - Block URLs blocks access to selected URLs for: Assets returned by the selected query or assets selected on the relevant asset page. DISCLAIMER : This is a study of how ZScaler works and which are the possible bypass, there is no intention to promote the bypass of ZScaler products. IO? correspond to countries and/or territories; for the former, it is Tuvalu; for the latter, British Indian Ocean Territory. There’s no way zscaler can’t fix the issue if you say they have already tried. Then i again removed the user then I update the Zscaler Policy deleted browser cache memory as well. Block: websites belonging to blocked categories cannot be accessed by users in your organization. For blocked uploads and downloads, you can configure end user notifications to explain the action. Requirements: admin privileges There are 2 options in the script: Bypassing the ZScaler - disabling binding to a network adapter. What mechanisms exist for me to request that Zscaler re-categorize the URL? This document was authored by Zscaler. Single source for block custom notification. As a result the ZScaler app is still working, but is excluded from traffic. All best practices and technical recommendations have been developed based on Microsoft’s recommended principles for Microsoft 365 connectivity (https://aka. Zscaler built a free, private, and safe to use cybersecurity risk assessment toolkit to help you uncover areas of exposure within your environment. Encrypting communications helps maintain the privacy and security of information passed between sender and receiver communications. Oct 31, 2023 · When DNS traffic reaches ZIA and the DNS Control module of the Advanced Cloud-Gen Firewall is active then consider the following best practices for rules: 1) Set the default rule Unknown DNS Traffic to Block. portal. I know there is a Browser control policy which can block Browsers, I’m looking for a broader scope of other agents like Flash player, etc… Zscale proxy seems to be blocking internet connection outside of Network The ZIA Policies Leading Practices Guide provides a set of best practices for configuring and deploying Zscaler Internet Access (ZIA) policies in an organization's environment. Hence, Zscaler recommends that users configure a Group Policy Object (GPO) to block the download of plugins or set policies in Google Workspace and Microsoft Edge to prevent the download of extensions. Jun 7, 2021 · We have a customized block page doing a very similar task. Would you all please elaborate this and what is the best recommendation? /urlFilteringRules GET Gets a list of all of URL Filtering Policy rules. Sep 20, 2019 · Nov 4, 2019 Zscaler: How to create policies to manage Github user access to sites with 3 different access levels. Hi @Marco_Put-Carstens, Appreciate the advice and guidance. The below URL is not working fine. Notifications that are managed by Zscaler are read only and cannot be configured, edited, or deleted. However. During the redirection, all query How to create and configure the URL Filtering policy in the ZIA Admin Portal. That worked just fine for me. It appears that our firewall zscaler is the culprit, since turning it off sorts the problem. It’s either blocked due to a policy you have in place to block it or it’s using certificate pinning or possibly even needs to by bypassed from SSL inspection. Security by Confinement: The other approach to . We have designed and deployed a custom block message for users who land on a blocked page. com? its got fix. Feb 9, 2023 · You can configure Action with “Caution with Redirect? or “Block with Redirect? based on your need. But troubleshooting Zscaler one additional comment, Youtube app uses QUIC in some mobile devices and Zscaler do not enforce policies on QUIC traffic. TV? and “. My organization would like to block the Miscellaneous/Unknown websites to cut down on users visiting malicious sites, but we have found that too many legitimate websites are mixed in and blocking the category would impact business. zscaler. When the firewall is enabled, Zscaler's Default Firewall Filtering Rule blocks all traffic from your network to the internet. These Public Service Edge Hello Community, Is there any way to bypass Destination URLs other than PAC files, specifically from the ZIA admin portal? Or are PAC files the only way to bypass traffic that I do not want to send through Zscaler services? Jan 13, 2025 · Inspection Alternative via Cloud Browser Isolation There are two schools of thought when it comes to security Security by Inline Scanning: Where every packet of data exchanged is intercepted, decrypted, scanned and enforced with policies. Each table has its own search field and can be sorted by column. IRC use or tunneling was detected in the request and blocked by IPS. Malicious files are instantly blocked, quarantined, or flagged based on your defined policies. However the config page only shows the primary GRE VIP for that DC. Below is a detailed guide on how to do this: Zscaler allows you ZScaler is a cloud security product similar to Cisco Umbrella, this is a study to understand how it works. The Zscaler service provides notification templates for the Acceptable Use Policy (AUP), caution notification, quarantine notification, and three different block notifications (URL Categorization, Security Violation, and Web DLP Violation). Sometimes I run into a URL that I feel should be categorized differently. Zscaler Client Connector one additional comment, Youtube app uses QUIC in some mobile devices and Zscaler do not enforce policies on QUIC traffic. The Troubleshooting for Deception course provides comprehensive instructions for addressing difficulties in Zscaler Deception Admin Portal settings, with a specific focus on the Zscaler Deception architecture. “ZPA accepts CORS requests if the requests are issued by one valid Browser Access domain to another Browser Access domain. Dec 16, 2022 · Current Zscaler guidelines indicate URLs should have the host. Currently subscribe feature doesn’t include application control and we are working The Zscaler Internet Access (ZIA) Secure Sockets Layer (SSL) Inspection Leading Practices Guide provides a set of best practices for configuring and deploying ZIA SSL inspection in an organization's network environment. If your organization has placed ZScaler, is to protect your devices from cyberthreats. It ensures secure, fast internet access. The Zscaler Cloud Performance Test is a browser-based tool for collecting performance troubleshooting information for end users when connecting to the internet through the ZIA cloud service. CLT: The Zscaler Client Connector component. It already intercepts traffic to enforce policies and block threats, but gives it control over HTTP headers, and suddenly, it's not just inspecting traffic - it Feb 15, 2021 · Hello, I had this same issue until Zscaler introduced, ‘Blocked URLs’ in SSL Inspection to block HTTPS URLs if SSL Inspection is disabled. Zscale proxy seems to be blocking internet connection outside of Network Dec 13, 2023 · I'm trying to block traffic to the VM from a specific Source IP Address. To prevent users from accessing other endpoints on local area networks, admins can configure Zscaler Client Connector to block traffic. Zscaler Anyone having some design challenges on how to setup different custom categories and policies in Zscaler? Our proxy policies are very restrictive on different sets of servers, which also require different sets of whitelists. This will stop non-DNS posing as DNS on dest:53 or malformed DNS. Mar 22, 2022 · Zscaler Internet Access Prevention Zscaler has previously released a feature for its customers to enable entire "Block Domain Fronting" traffic. Read-only access needs access to the base URL’s but needs to find URL’s with keywords in them to block accordingly. Can Zscaler block file upload/download by filename, by MIME type and manually listed file extension types? File Type Control is looking for the first few bytes of the file, also known as the “magic bytes? to determine the file type. With GitHub CloudApp, this can interfere with read-only access as URL’s in CloudApp are either allow or block and takes precedence over URL policy. During the redirection, all query The website encountered an unexpected error. Mar 11, 2024 · Learn how Zscaler Advanced Threat Protection provides always-on, AI-powered defense against malware, phishing campaigns, and more. Please refer to Configuring the URL Filtering Policy | Zscaler for more information. This setting only affects the behavior of the pop-up notification for the end user. Information on how to create and configure the Firewall Filtering policy. Below is a detailed guide on how to do this: Zscaler allows you Sep 1, 2022 · URL getting block Hi team, I am new on the Zscaler portal please help with the below error send by client machine. Nov 9, 2018 · You can block countries within Zscaler under “Advanced Threat Protection | Blocked Countries?. This option is lasting even after turning off the script. In the However. Zscaler's firewall offerings come in Standard and Advanced Firewall subscriptions. How to configure or add an SSL Inspection rule from the ZIA Admin Portal for Zscaler traffic. How Zscaler Can Help Zscaler offers powerful URL filtering as a native feature of Zscaler Internet Access™ (ZIA™), the world’s most deployed security service edge (SSE) platform, along with our industry-leading secure web gateway, data loss prevention, cloud-gen firewall, and more. Allow, caution, or block uploads and downloads. Im getting ERR_SSL_PROTOCOL_ERROR while trying to access a https page which is blocked by a URL filtering policy. We currently block Newly Registered Domains and Caution Misc/Unknown. The message is configured by the ZPA Administrator so that the end user sees a notification when their request is blocked by Access Policy. jbin lma xlcsz wzqj aem tezml qjehllz cfxv ewxl ygpwfv fsgvovs geidt mhtaozu gfsibd aja