The best method of accomplishing your requirement is to configure multiple NAT policies mapping single original and translated ports. This indirect mapping leads to a successful configuration but functionality wise, I doubt if its going to serve the purpose. I found a couple issues with port forwarding in Sonicwall which appear to be inconsistencies. Force inbound and outbound FTP data connections to use default port 20 heading displays a pop-up table of the maximum number of connections for your specific SonicWALL security appliance for the various configuration permutations. If a request takes more than one packet. This is what I have configured and have working now: Access Rule from WAN to LAN to allow an address group (several IPs) with a service group (range of TCP ports). Typically, this only necessary when secondary LAN subnets are configured. With an EE membership, you can ask unlimited troubleshooting, research, or opinion questions. For whatever reason Trustwave was unable to advise on how to reduce their scan intensity. Which is ironic, considering it is doing its job. DNS services uses UDP/53 most of the time. When the Sonicwall encounters a high intensity scan, it is likely to drop the connections. yes, i have a pool and each server has it's own ip. So the sonicwall sees the scan traffic as a potential DDoS attack and shuts it down. Ya that's the funny thing. The Connections section provides the ability to fine-tune the performance of the appliance to Can't understand why they want you to place an IP in the whitelist for a scan of your WAN interface. yes the sonicwall is accessable and so is another web server behind it. behind the SonicWALL listening on port 2121: The following options are also configured in the All of the sudden after the last firmware upgrade, the scan started to fail and stating excessive open ports. We use Security Metrics and they've never requested this. Opening ports on a SonicWALL does not take long if you use its . 3) Network-services Added services: named R!ATAFaxUDP 5060-5080 UDP ports 4) -Network-NAT Policy/Rules (2 entries) Named: No SIP Port Remap WAN-To-LAN & No SIP Port Remap LAN-To-WAN Unfortunately TrustWave is the only vendor that our client uses, and SonicWall is the only device they use so I was unable to compare with other vendors. However, when using non-standard ports (eg. We'll probably wind up trying that though, as we are nearly out of options. section of the Firewall You didn't have to actually replace their firewall I hope. Default UDP Connection Timeout (seconds) Both have a service groups containing a single port; which, is the same as the listener port on the internal server. Hi John, "strongswan" service is responsible for establishing IPsec-based VPN connections. So since we don' have IPS enabled/licensed on our SonicWall, I just added those two IP ranges to the whitelist temporarily in order for them to have access.. Click add, and repeat these steps for Remote2, 65502-65502. Come for the solution, stay for everything else. Please post in here for any clarifications. I have an NSA 240 and don't have that problem. this will result in passive scanners detecting open ports and services. If the SonicWall is providing the security to your network, then you don't want to whitelist the ASV in that device. I drank the koolaid and went full tilt with Sonicwall firewall, (overpriced) Sonicwall Switch and Sonicwall Access Points. This will prove that your firewall is doing what it is supposed to do and not "breaking down" under pressure. I like the idea of managing the Switch and AP's through the Sonicwall firewall, but losing simplicity is frustrating. This normally takes the form of adding the IP addresses of this scanning service to the "whitelist" of the product or device. Dynamic Ports Enable FTP Transformations for TCP port (s) in Service Object - FTP operates on TCP ports 20 and 21 where port 21 is the Control Port and 20 is Data Port. That might give rise to that error. I have the same problem but I am using Cisco ASA5510. Clear this check box if you are testing traffic between two specific hosts and you are using source routing. It would not be possible to set up this many individual port forwards. sonicwall support tried to tell me the issue was with my modem but after replacing the sonicwall with another router and not having this issue they approved the RMA of the sonicwall, thanks for everyone's help Get an unlimited membership to EE for less than $4 a week. Firewall Settings > Advanced But I still say a vulnerability scanning provider shouldn't be asking you to make special provision for the scan. This should be the indirect way of mapping many to one ports only at service group / object level. But I don't use the Intrusion Prevention Service (if that's the same thing as the IDS referred to in the thread earlier). The table entry for your current configuration is indicated in the table, as shown in the example below. I found a way around the multiple ports forwarding. Did you ever get a resolution on this please? page: Drop Source Routed Packets I did confirm when adding additional service objects to a service group that is already used in a NAT policy, the addition is successful. If I forward the port in the only NAT rule that will allow me (out of 3), I can then add a service object that includes a range of ports (1024 and above) to the service group the NAT is referencing. If what you are saying is indeed true, Sonicwall will not work for ANY customer doing B-B with Walmart. New York CNN . Again, this is for a single port. I'm running into the same issues with these "open ports" from the PCI scanning and vendor no help at all. SonicWall Support Port Settings Use this screen to view and configure Switch port settings. How would I go about doing this? For the past 22 years, the Port of Los Angeles has been the busiest container port in North America, moving around 10 million cargo containers filled with goods for Americans and . Sonicwalls with the IDS module will often drop "High Intensity" scans, so we use the "Medium Intensity" scan through Qualys and the device passes. prioritize either optimal performance or support for an increased number of simultaneous connections that are inspected by UTM services. The event is then logged as a log event on the security appliance. The client does have Intrusion Prevention enabled, but it definitely violates the spirit of the scan to go in and turn it off. Has anyone found a solution to this problem? In this case as per my previous suggestion, its not productive and feasible to configure 1000+ NAT policies. There doesn't seem to be an option in Trustwave to reduce the intensity of the scan, and the device is dropping their connections. But wanting to perform any changes to the NAT policy is not allowed and firewall throws same error as explained on previous comments. Nothing else ch Z showed me this article today and I thought it was good. We'll see if this is still the answer they give. We usually work with Qualys for PCI and compliance scanning. Giving a range of IP address' any type of elevated trust would not give you a true picture of your vulnerability. This topic has been locked by an administrator and is no longer open for commenting. What did you wind up doing to get them to pass? 2020, 2121), SonicWALL drops the packets by default as it is not able to identify it as FTP traffic. Be aware that ports are 'services' and can be grouped. We are having the same issue as the above mentioned Trustwave failed scan "network services has stopped responding" error on an NSA 240. By white listing them in the SonicWall, it may move the firewall security controls to the software layer such as Windows Firewall or IPTables. When using non-standard ports (for example, 2020, 2121), however, Dell SonicWALL drops the packets by default as it is not able to identify it as FTP traffic. Unlimited question asking, solutions, articles and more. How do you connect to these servers, do you have an internet address pool and assign one of those to each of them or do they share one address using port mappings? Port forwarding from multiple ports to a single port now works; however, I am now unable to make any changes to the NAT rule without triggering the "Error: Original Source:Unknown service class" error. Frustratingly, it seems a Sonicwall Switch refuses to allow any Sonicwall firewall Port Shielding on the port it uses to connect to a Sonicwall firewall. When I add a named TCP port in the Translated Service, I receive "Error: Unknown service class" which doesn't make sense to me. sonicwall support tried to tell me the issue was with my modem but after replacing the sonicwall with another router and not having this issue they approved the RMA of the sonicwall, thanks for everyone's help. The Port Settings feature lets you change the configuration of the ports on the Switch in order to find the best balance of speed and flow control according to your preferences. I have a support ticket with Dell/Sonicwall so we will see what becomes of it next week. external collector is configured, as well as the physical capabilities of the particular model of SonicWALL security appliance. Which is great, except that it has increased the time to run a scan from a few hours to 2+ days. the scanner is fooled into thinking that all ports are open. Your daily dose of tech news, in brief. Please ensure the following network blocks have full, unobstructed, access in order to more accurately perform a vulnerability scan: 204.13.201.0/24, 64.37.231.0/24". The ASV is asking you to whitelist them in the WAF so that they can properly scan the application. We are having the same issue with Trustwave with our NSA220. Stopping that service would result in disabling those type of connections, which rely on UDP ports 500 and 4500. ISSUE: I am only able to port forward with one of the NAT rules. How to Block SMTP Using a SonicWALL Firewall - YouTube 0:00 / 1:49 How to Block SMTP Using a SonicWALL Firewall 13,856 views Feb 13, 2012 25 Dislike Share Save Firewalls.com 16.1K subscribers. log into the sonicwall, click firewall, for an outbound connection click LAN >> WAN in the Matrix chart that it shows CLick Add Select the Service (SMPT is port 25) Select the source as any select the desitnation as any and select Discard (not Deny) select OK outbound port port 25 now blocked You will see two tabs once you click "service objects" Service Objects Service Groups Please create friendly object names. It was bizarre. This is the best money I have ever spent. If there is no business need and you wish to tighten security further, then you may consider the actions/suggestions highlighted. Please click on Refresh option in the packet monitor page to see the traffic. To configure advanced access rule options, select, To illustrate how this feature works, consider the following example of an FTP server, The following options are also configured in the, The Connections section provides the ability to fine-tune the performance of the appliance to, DPI Connections (DPI services enabled with additional performance optimization), The maximum number of connections also depends on whether App Flow is enabled and if an. But if I disable the access rules for one of the two it's not effected, i can access external website from it. When it fails for "network services has stopped responding", dispute that finding with a copy/paste of the log entry that shows the drop. Was there a Microsoft update that caused the issue? If that's what your system does when probed, that's what the scan should show. Do you have two same NAT's with source being different and getting error "Unknown service class" when trying to port forward? If you want all systems/ports that are accessible, check the firewall access rules (WAN zone to any other zone) and the NAT Policy table. Have them re-run the scan. It's all good, except I want the unused physical interface ports on the back of the Sonicwall to use the same network subnet (192.168.1.x) as the Sonicwall Switch. If anyone has resolved this particular issue I'd love to hear about it. page includes the following firewall configuration option groups: To illustrate how this feature works, consider the following example of an FTP server EXAMPLE: SSH, http, or tftp) from passing though the firewall. I tried disputing the result with Trustwave and opened a support case, neither one yielded a result so I turned off SSL on the WAN interface but left HTTP management open. There is no change in the level of security protection provided by either of the DPI Connections settings below. I need to forward a port range to a single port. Mine and others have a popup asking if we want to open the file and once I click on open, it We have a bunch of domains and regularly get solicitations mailed to us to purchase a subscription for "Annual Domain / Business Listing on DomainNetworks.com" which promptly land on my desk even though I've thoroughly explained to everyone involved that Webinar: Exploring Societys Comfort with AI-Driven Orchestration, Explore Societys Comfort with AI-Driven Orchestration. Before I give up and dump the switch, any creative ideas or tips. to compy with the audit you may have to change this new default behavior back to deny vs. drop. Enter the number of seconds of idle time you want to allow before UDP connections time out. The illustration below features the older Sonicwall port forwarding interface. I'm considering reverting to my old way of an inexpensive layer 2 switch for Sonicpoints rather than being forced into an inflexible network configuration corner by the Sonicwall switch. 1996-2022 Experts Exchange, LLC. You can try this. To configure advanced access rule options, select Best way is by manually review firewall access rules from WAN zone to any. Unlimited question asking, solutions, articles and more. We could go ahead and pop for an extra IP address on our Qualys account and submit those results for attestation, and I'm pretty sure that will pass, but that's a pricey solution. The WAN to LAN access rule can be of single that contains all ports using a service group. I have a sonicwall TZ 190 and a web server behind it. The other returns: "Error: Original Source:Unknown service class". This value is overridden by the UDP Connection timeout you set for individual rules. Settings > Advanced Anybody found a solution yet? Ports are blocked to stop certain types of traffic. In addition, it seems adding another Sonicwall Switch to a Sonicwall will require adding yet another subnet (unless daisy chaining switches, which creates a bottleneck). RFC 1035 does not specify any other port other than tcp/53 and udp/53. Once the necessary packets are captured, click on "Stop Capture". All rights Reserved. I have a similar issue going on that I haven't been able to resolve. Well I have a SonicWALL but we don't run IDS so can't comment on whatdeignguy79 issurmising. If you're hosting a public website behind that firewall, then ports 80 and/or 443 will be open and you may be running a WAF (Web Application Firewall) to detect and block XSS, SQL Injection, and other web application attacks. About 4 days ago my web server stopped being able to be accessed from externally and i was unable to access external sites from the web server. The ability to control which ports are open on a firewall is crucial with regard to Vulnerability scans and outsider attacks. NAT policy from WAN IP mapped to internal IP with the same service group in the access rule. Additionally, if you have an IDS you may want to whitelist them in the IDS to prevent triggering alerts and events.. but personally I consider this a good method of validating the IDS is working correctly. In reply to How to close DNS UDP ports? Apply firewall rules for intra-LAN traffic to/from the same interface I've even tried turning off "Prevent All" on the Intrusion Prevention screen. I also added their IP source addresses to the whitelist in the firewall ACL. Let me check and find out the error reason. Sign up for an EE membership and get your own personalized solution. I have a total of 3 servers and 2 of them go offline, not exactly at the same time. This is to safeguard internal devices from harmful access, although it is frequently required to open up specific elements of a network to the outside world, like servers. set IP desired under IP address, set MAC under ethernet address, left lease time at 1440, set gateway & subnet from CMD-ipconfig/all found data. I totally agree with this point and its a valid one. I started with Experts Exchange in 2004 and it's been a mainstay of my professional computing life since. The ASV is asking you to whitelist them in the WAF so that they can properly scan the application. I just checked the firewall categories on my zywall, it doesn't have an explicit DOS-Option, but the Firewall activity and TCP/UDP Dropped should include that. However, if you configure another port for HTTP management, you must include the port number when you use the IP address to log into the SonicWALL security appliance. I think the only way is to pass sample traffics on couple of ports and check if the end server responds. The best method of accomplishing your requirement is to configure multiple NAT policies mapping single original and translated ports. I could disable https on the outside interface to pass this but that is cheating the system and not the route I want to go beside I would not be able to use any-connect if I disable https. Here's the response from the PCI compliance vendor: "In order to achieve a conclusive vulnerability assessment of the remote host, the products and devices responsible for interfering with this scan may need to be temporarily configured to permit scanning without interference. For example, if you configure the port to be 76, then you must type <LAN IP Address>:76 into the Web . I cannot not tell you how many times these folks have saved my bacon. Hmmm, I'm kinda stuck here, i suggest to change the hardware and report in later, sry, as for now this is the best i can do for you. I hope this clarifies. Didn't get an answer yet to my two proposals - did you try them? One of our clients has their own Trustwave account. So I went into our sonicwall and turned off "Enable Stealth Mode" in the Firewall Settings section, and then ran the PCI scan again. This is a vulnerability scan, supposed to represent what anyone could find. Copyright 2022 SonicWall. Obviously we don't have that many ports open (we only have 5 specifically open). - If the check box is selected, any FTP data connection through the security appliance must come from port20 or the connection is dropped. All we have is basic firewall licensed, no other features. To sign in, use your existing MySonicWall account. Click "Start Capture". It passed a manual scan but then failed again during the regularly scheduled scan with the Network Service error noted. The above works fine but I need a rule to forward the range of TCP ports to a single TCP port. They have a requirement of all ports, 1024 and above, being open for their servers to transfer electronic orders. I learn so much from the contributors. I completely understand your client's requirement of all ports starting from 1024 should be translated to a single port. There is a single listener port open on my side. To create a free MySonicWall account click "Register". In simple words, technically it is not possible to translate traffics sent on multiple ports to a single port on a NAT policy. Type the number of the desired port in the Port field, and click Accept. Well that's awesome! It helped me launch a career as a programmer / Oracle data analyst. under Firewall. I believe that you can remove their IPs from the whitelist. Told me to go to our ISP which makes no sense since 11 out of 16 of our locations passed. For example, if you want to connect to a gaming website, you will need to open specific ports to allow the game server access to your computer through the firewall. I share your confusion. Interesting, a SonicWALL TZ 210 Total Secure is failing for one of my clients on the same "Network Service Stopped Responding" vulnerabilityon a Trustwave scan. If so, could you please provide a screenshot of both the NAT policies? Kinda of crazy to have to add another subnet for every switch! I have two Access and NAT policies set up exactly the same with the only difference being the source IP address. We are having a 3rd party do a security assessment, and they are running into the same issue with our Sonicwall TZ-200. Do we HAVE to have IPS licensed and running on the SonicWall for this to work? By default, the SonicWall blocks all Inbound Traffic that isn't part of a connection that originated from an inside device, like the LAN Zone device. All rights reserved. I may have to temporarily in order for them to complete a scan in a timely manner. Some examples would be SSH (TCP port 22), tftp (UDP port 69), and http (TCP port 80). The has two effects, it shows the port as open to an external scanner (it isnt) and the firewall sends back a thousand times more data in response. - (Enabled by default.) I have checked the logs and i don't see any events that have been labeled as "attacks". I haven't seen a way to whitelist that ip address and I'd hate to have to turn off that protection. Just don't block the IP as a result of these events. The WAN to LAN access rule can be of single that contains all ports using a service group. When I first ran the scan, it came back with the error: "Excessive number of open TCP ports (64146) during port scan.". Not exactly the question you had in mind? Take one extra minute and find out why we block content. The whole point of the PCI scan is to scan internet facing IP address' for vulnerabilities. Firewall is going to throw an error message "Error: Original Source:Unknown service class". I was a little shocked to actually hear them admit that, but they tried every setting they could think of and it didn't fix the issue. Many of our clients have Sonicwall devices. I think that should clear your problem up. This is by design and applies to all SonicWall Firewall models. are u able to ping any public ip address like ping 4.2.2.2. yes I have no problem pinging or using any port except for 80 and 443, the two ports that are open from the outside to the server. Hover over to see associated ports. We have wiped the device and created the rules from scratch, still no go. In the Window that comes up, give it a name (Remote1 for example), change the Protocol to TCP (6), and where it says port range, type the single first you want to use as both the beginning and end port number (65501- 65501). The bug was the firewall responded to tcp connections on an unopen port with the content filter block page. They actually gave us a custom firmware for the device (NSA240) and we applied it last night, but it still fails. Any other settings on the sonicwall I need to configure to get a successful scan? Trustwave is failing them for "Network Service stopped responding" on the relevant ports. - Applies firewall rules that is received on a LAN interface and that is destined for the same LAN interface. Bonus Flashback: Back on December 9, 2006, the first-ever Swedish astronaut launched to We have some documents stored on our SharePoint site and we have 1 user that when she clicks on an Excel file, it automatically downloads to her Downloads folder. But if you absolutely have to. Covered by US Patent. Identical Sonicwall settings across the board with exception of WAN IP. It has always pass but this month it started failing after I updated to ASA 9.1(5). If you're hosting a public website behind that firewall, then ports 80 and/or 443 will be open and you may be running a WAF (Web Application Firewall) to detect and block XSS, SQL Injection, and other web application attacks. This time it came back with: "Excessive number of open TCP ports (35712) during port scan.". Click OK, and Start Capture. I found a KB link that explains the error. Please inform. Please check the link below and let us know if you have any queries or concerns: Please verify if the translated service object in the NAT policy is a service group and not an individual TCP port as you want. I think my favorite is #5, blocking the mouse sensor - I also like the idea of adding a little picture or note, and it's short and sweet. What ports could it possibly be seeing as open? . Navigate to the "Advanced Monitor Filter" tab and enable all check boxes. Firewall Settings > Advanced They said that even if you whitelist an IP address, the IDS engine still takes precedence over any ACL, and that's by design. Mousing over the question mark icon next to the Connections Please go to "manage", "objects" in the left pane, and "service objects" if you are in the new Sonicwall port forwarding interface. I don't think you need or want to make it a trusted network as this would negate the whole premise of a scan. Dynamic Ports To continue this discussion, please ask a new question. https://www.sonicwall.com/support/knowledge-base/error-original-source-unknown-service-class-is-displayed-while-creating-a-nat-policy/170503609340809/, https://community.sonicwall.com/technology-and-support/discussion/comment/858#Comment_858. Hi, we are having an issue getting a successful scan from our PCI Compliance vendor and unfortunately they aren't being much help. Computers can ping it but cannot connect to it. - The default configuration allows FTP connections from port 20 but remaps outbound traffic to a port such as 1024. We have a Windows XP computer (don't ask) with network shares that, as of yesterday, are no longer reachable by other computers on the LAN. It's been a few months since I've dealt with this, but I eventually contacted SonicWall support and after hours of them looking at the logs, they inevitably just chalked it up to "Our devices will not work with the TrustWave scan". Adding your scanning vendor's IPs to any kind of firewall rule or whitelist sounds counter-intuitive to me. It detects possible SYN floods and blacklists the ip address, then re-enables after a time out. Thanks a lot for your efforts in testing it out. I previously had an issue with the same device failing on the recent OpenSSL vulnerability that was reported, yet SonicWALL claimed the TZ series was not affected. The ASV's responsibility is to validate (by scanning) that proper security controls are in place. The Click "OK" to save the parameters. It's all good, except I want the unused physical interface ports on the back of the Sonicwall to use the same network subnet (192.168.1.x) as the Sonicwall Switch. We get it - no one likes a content blocker. This is by design and applies to all SonicWall Firewall models. Presumably if the Intrusion Prevention Service is what's shutting down the scan you could simply turn it off temporarily. I simply want to plug my laptop into any unused port and be on the same subnet as the switch! Please create two separate service objects with the same TCP port and directly use those service objects in the translated service field on the NAT policies. The Enable FTP Transformations for TCP port (s) in Service Object option allows you to select a Service Object to specify a custom control port for FTP traffic. I had massive unexplained uploads on the WAN interface, which is how I disovered the issue. however only interesting traffic is passed. Flashback: Back on December 9, 1906, Computer Pioneer Grace Hopper Born (Read more HERE.) Create the address object (in your case two and set them as networks) and place in the WAN zone. I'm currently having this problem with a Sonicwall E5500. We don't even use that feature, and even know it's turned off, the device still shuts down the traffic. I was thinking DOS too but I don't see any attacks in the log, do you know if DOS-attack logging is on by default on the sonicwall? The following connection options are available: The maximum number of connections also depends on whether App Flow is enabled and if an I know this is an old thread however changes to the Sonicwall firmware affects the default behavior of the classic deny any any model to accept and drop. So, if i try to go to. Managing ports on a firewall is often a common task for those who want to get the most out of their home network. Welcome to the Snap! 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