Advanced URL Filtering
Cloud Managed
Table of Contents
Cloud Managed
If you’re using Panorama to manage
Prisma Access
:Toggle over to the
PAN-OS & Panorama
tab
and follow the guidance there. If you’re using
Strata Cloud Manager
, continue here.- Use Test A Site to check how PAN-DB categorizes a specific website.You can also use the platform to request a categorization change for any website that you believe has been incorrectly categorized.
- Create a passive URL Access Management profile thatalertson all categories.The firewall generates a URL filtering log entry for websites in URL categories with an action other thanallow.
- Select.ManageConfigurationSecurity ServicesURL Access Management
- Under URL Access Management Profiles, select the checkbox next to the best-practices profile and thenClonethe profile.The cloned profile appears under the profiles with the namebest-practices-1.
- Select thebest-practices-1profile and rename it. For example, rename it tourl-monitoring.
- Alerton all categories except malware, command-and-control, and phishing, which should remain blocked.
- UnderAccess Control, select all categories, then de-selectmalware,command-and-control, andphishing.
- With the categories still highlighted, clickSet Accessand chooseAlert.
- Blockaccess tomalware,command-and-control, andphishingother known dangerous URL categries:
- phishing
- dynamic-dns
- unknown
- extremism
- copyright-infringement
- proxy-avoidance-and-anonymizers
- newly-registered-domain
- grayware
- parked
- Savethe profile.
- Apply the URL Access Management profile to Security policy rules that allow traffic from clients in the trust zone to the Internet.A URL Access Management profile is only active when it’s included in a profile group that a Security policy rule references.Follow the steps to activate a URL Access Management profile (and any Security profile).Make sure theSource Zonein the Security policy rules you add URL Access Management profiles to is set to a protected internal network.
- Push Configto commit the configuration.
- View the URL logs to see which website categories your users are accessing. The categories you’ve set to block are also logged.For information on viewing the logs and generating reports, see Monitoring Web Activity.Select. URL Filtering reports give you a view of web activity in a 24-hour period.ActivityLog ViewerURL
- Next Steps:
- For everything that you do not allow or block, use risk categories to write simple policy based on website safety. PAN-DB categorizes every URL with a risk-level (high, medium, and low). While high and medium-risk sites are not confirmed malicious, they are closely associated with malicious sites. For example, they might be on the same domain as malicious sites or maybe they hosted malicious content until only very recently.You can take precautionary measures to limit your users’ interaction high-risk sites especially, as there might be some cases where you want to give your users access to sites that might also present safety concerns (for example, you might want to allow your developers to use developer blogs for research, yet blogs are a category known to commonly host malware).
- Pair URL filtering with User-ID to control web access based on organization or department and to block corporate credential submissions to unsanctioned sites:
- URL filtering prevents credential theft by detecting corporate credential submissions to sites based on the site category. Block users from submitting credentials to malicious and untrusted sites, warn users against entering corporate credentials on unknown sites or reusing corporate credentials on non-corporate sites, and explicitly allow users to submit credentials to corporate sites.
- Add or update a Security policy rule with the passive URL Access Management profile so that it applies to a department user group, for example, Marketing or Engineering. Monitor the department activity, and get feedback from department members to understand the web resources that are essential to the work they do.
- Consider all the ways of leveraging URL filtering to reduce your attack surface. For example, a school may use URL filtering to enforce strict safe search for students. Or, if you have a security operations center, you might give only threat analysts password access to compromised or dangerous sites for research.
- Follow URL filtering best practices.