r/paloaltonetworks 2 yr. ago Posted by Skadi793 File blocking and SMB I set up a file blocking policy (basic) on my PA, but I have noticed that end users are still able to send files back and forth using SMBv3 that are on the block list (.exe, .bat, etc.) So, for encrypted traffic that the Palo only recognizes as 'ssl' application, if . That is: It does not prevent a malicious user from upload certain files to the Internet! View the file block logs in Data Filtering logs section. These actions can be applied for either uploading, downloading or for both action and for either a specific or any application. Palo Alto Networks Predefined Decryption Exclusions. Navigate to Monitor > Logs > Data Filtering. High Availability Firewall Clustering and Virtual Systems. The only thing that will block is non-encrypted traffic; without SSL intercept, the PA can't see inside encrypted traffic to know what you're transferring. In this example the file-type is JAR files. Examples of encoding levels: QoS Policy Match. Have a look at this blogpost from 2013: Palo Alto File Blocking: Benefits and Limitations. When a file is seen in a traffic flow matching a Security policy with a File Blocking Profile applied, it will be checked against the configured File Blocking policy. Download PDF. [UPDATE 2018-08-01] In the meantime Palo Alto has updated its threat database detection to recognize encrypted office documents again. Since PAN-OS 7.0, the maximum level of decoding has been increased to 4. URL Filtering and File Blocking; Denial of Service Protection; 6. Problem is, I want to only allow *.webex.com to download dlls without allowing all dlls on my main web-browsing rule. Without SSL decryption enabled on a Palo firewall, is there much value in adding file-blocking profiles? The file type can also be chosen from a more specific to any file type. When there is a single match, action is taken accordingly. Procedure 1. Currently I have a "main" web-browsing rule that sets categories and so on. Nice. Current Version: 9.1. If you really want to bypass the file blocking policy then you need to create additional rules. Data Filtering & File Blocking. Last Updated: Tue Sep 13 22:03:01 PDT 2022. Settings to Enable VM Information Sources for Google Compute Engine. 2. The File Blocking Profile rulebase does not follow a normal "top-down" approach when applying rule actions. Chapter 1. The problem I'm having is webex installers. Get 5 months for $5 a month to access the full title and Packt library. 0 3 3 Comments Best The power of multi-level-encoding Before PAN-OS 7.0, the Palo Alto Networks firewall was able to decode up to two levels of encoding. For user accounts, set the Action to continue . Device > Troubleshooting. The different type of action which the Palo Alto Networks firewall can do for a file block, alert, forward, continue and continue-and-forward. Policy Based Forwarding Policy Match. This is in the same Logs section as the Traffic and Threat logs under the Monitor tab. They try to download a 7zip file containing a DLL. I have a file blocking rule set to block mostly everything. MS Updates and PE file blocking profile : r/paloaltonetworks r/paloaltonetworks 1 yr. ago Posted by bgarlock MS Updates and PE file blocking profile We block PE downloads from end users, and only allow users in the IT group or specific hosts to download. Other users also viewed: Your query has an error: You must provide credentials to perform this operation. Since the traffic is governed through the security policies in the firewall, it is all zone based. Threat Prevention. PAN-OS. This isolates the infection and prevents the spread of malware through the data center. Exclude a Server from Decryption for Technical Reasons. In our example it is a Security Policy rule named BLOCKJAR. Version 10.2; Version 10.1; Version 10.0 (EoL) Version 9.1; Version 9.0 (EoL) . Attachments. The file blocking feature on the Palo Alto firewall can be used to avoid file up-/downloads that are done accidentally by a trusted user. Traffic from the data center to the internetLimit file transfers to the file types required by the application in use. File blocking profiles are used to block specified file types over specified applications and in the specified session flow direction (inbound/outbound/both). NAT Policy Match. Current Version: 10.1. Decryption/SSL Policy Match. Then create a second File Blocking Policy that just Alerts to .exe, PE, and .msi files instead of blocking them. Last Updated: Sun Oct 23 23:47:41 PDT 2022. Security Policy Match. Or did I do something wrong? Feature-level control, file blocking by type and data filtering features allow organizations to implement a range of policies that can help balance the use of personal or non-work related applications with the business and security risks associated with unauthorized file and data transfer. Beginning with version 8042 it detects an "Encrypted Microsoft Office 2007 File" when an encrypted docx or . PAN-OS Administrator's Guide. Browse to the [Monitor > Data Filtering] logs and identify the Security Policy rule name that was declared as blocking the file. Files exceeding this level would be allowed to bypass file blocking. For example , say block .exe files. 3. How to configure File Blocking on a Palo Alto Networks Firewall | PAN-OS 9.1Linkshttps://docs.paloaltonetworks.com/pan-os/9-1/pan-os-web-interface-help/objec. If you don't block all Windows PE files, send all unknown files to WildFire for analysis. The file blocking feature You should be having the direction set to "both" in the file blocking profile. Central Palo Alto Firewall Management with Panorama; You're currently viewing a free sample. This keeps the drive-by downloads away, and helps keep shadow IT at bay. DoS Policy Match. Set Up File Blocking. Create a custom URL object that includes the URLs that Adobe and Chrome files download from first. Authentication Policy Match. Set Up File Blocking; Download PDF. Attempt the file transfer that is getting blocked. owner: panagent. You can set the profile to alert or block on upload and/or download and you can specify which applications will be subject to the file blocking profile. The security profile that needs to be applied to the policies should be the following across the zones. is this because SMB is using encryption? It cannot be used to block every file type except some explicitly allowed ones such as done with a whitelist.